Confidential Material omitted and filed
separately with the Securities and Exchange Commission.
Asterisks denote omissions.

Exhibit 4.34

Nortel Confidential

Nortel Networks Agreement No. 011449
Nortel Networks Amendment No. 011449-9

AMENDMENT #9

(File # 011449-9)To

OEM PURCHASE, SALE AND SUPPORT AGREEMENT
(Agreement)

BETWEEN SELLER CORPORATION AND NORTEL
NETWORKS LIMITED

This Amendment
No. 9 to the OEM Purchase, Sale and Support Agreement by and between Nortel
Networks Limited, a Canada corporation with offices located at 8200 Dixie Road,
Suite 100, Brampton, Ontario, Canada L6T 5P6 (Nortel Networks) and AudioCodes
Ltd., an Israeli
corporation with offices located at 1 Hayarden Street, 70151 Airport City,
Lod,, Israel (Seller), will be effective as of October 30, 2007.

WHEREAS,
Nortel Networks and Seller entered into an OEM Purchase, Sale and Support
Agreement (Agreement) with an Effective Date of April 28, 2003; and

WHEREAS,
effective as of June 1, 2003 Nortel Networks and Seller amended the Agreement
for the purposes of revising the terms and conditions of the Agreement
pertaining to the sale and purchase of Norstar Gateway Products (Amendment
1); and

WHEREAS,
effective as of January 1, 2005 Nortel Networks and Seller amended the
Agreement for the purposes of Seller obligating itself to pay over a cash
incentive to promote and sell AudioCodes Mediant 5000 Trunk Gateway Product
(i.e., the Nortel Media Gateway 3500) (Gateway 3500) (Amendment 2); and

WHEREAS,
effective as of February 15, 2005 Nortel Networks and Seller amended the
Agreement for the purposes of adding an OEM Interface License to the Agreement
to address interoperability issues with regard to certain Products described
therein (Amendment 3); and

WHEREAS,
effective as of January 1, 2005 Nortel Networks and Seller amended the
Agreement for the purposes of updating M5K pricing and amending various
contract terms and conditions (Amendment 4); and

WHEREAS,
effective as of January 1, 2005 Nortel Networks and Seller amended the
Agreement for the purposes of updating Support provisions (Amendment 5); and

WHEREAS,
effective as of April 1, 2005 Nortel Networks and Seller amended the Agreement
for the purposes of Sellers obtaining the use of Nortel Networks code-signing
certificate and private key in relation to a Nortel Networks customers use of
the Mediant Products (Amendment 6); and

WHEREAS,
effective as of December 15, 2006 Nortel Networks and Seller amended the
Agreement for the purposes of modifying payment terms (Amendment 7); and

WHEREAS,
effective as of June 1, 2007 Nortel Networks and Seller amended the Agreement
for the purposes of updating the Product and Price list (Amendment 8); and

WHEREAS,
Nortel Networks and Seller wish to further amend the Agreement for the purposes
of updating certain contract terms and adding the Mediant 3000 and MediaPack
Gateway products;

---



Nortel Confidential

NOW, THEREFORE, in consideration of the premises and the promises set forth herein,
the parties agree to amend the Agreement as follows:

|     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|---- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|I.   | Add Exhibit
 A-10 Mediant 3000 and MediaPack Gateways Product List, Prices, Discounts,
 Delivery and NRE Payments to the Agreement, attached to and incorporated in
 this Amendment 9 as Attachment 1.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|II.  | For the
 Products described in Exhibit A-10, Section 7.4 of the Agreement is hereby
 deleted in its entirety and replaced by the following Section 7.4:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | 7.4 | Seller will
 accept Blanket Purchase Orders and Releases or P.O.s, if the orders or
 Releases comply with this Agreement. Seller will acknowledge acceptance of
 the orders and Releases in writing (e.g., e-mail, fax web or html response)
 within three (3) business days of its receipt of the order or Release unless
 stated otherwise in Exhibit A-10. Nortel Networks or the purchasing
 Subsidiary or Affiliate may cancel at its convenience any part of a P.O.,
 Blanket Purchase Order or Release (i) without charge if the cancellation
 occurs more than **** (****) calendar days before the Delivery Date; and (ii)
 subject a cancellation fee of **** percent (****%) of the cancelled portion
 if the cancellation occurs more than **** (****) calendar days (but not more
 than **** (****) calendar days) before the Delivery Date. Nortel Networks or
 the purchasing Subsidiary or Affiliate may not cancel any part of a P.O.,
 Blanket Purchase Order or Release less than **** (****) calendar days before
 the Delivery Date.                                                                                                                                   
|     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|III. | For Products
 described in Exhibit A-10, Section 8.4 of the Agreement is hereby deleted in
 its entirety and replaced by the following Section 8.4:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | 8.4 | Rescheduling Delivery Date At no
 additional charge Nortel Networks may reschedule each Delivery Date in
 accordance with the applicable Product rescheduling schedule in Exhibit A-10.
 Nortel Networks may defer once per Purchase Order (reschedule) all or part of
 the Products ordered under any Purchase Order for as long as **** (****)
 calendar days beyond the scheduled Delivery Date provided notice of such
 deferral is given to Seller at least fifteen (15) days prior to the scheduled
 Delivery Date. If Products rescheduled under this section are subsequently
 canceled, cancellation shall be based on the original scheduled Delivery
 Date.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |      | The
 aggregated quarterly volume of Products cancelled and/or rescheduled under
 Exhibit A-10 shall not exceed $**** US dollars.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|IV.  | For Products
 described in Exhibit A-10, the first sentence of Section 11.2 of the
 Agreement is hereby deleted in its entirety and replaced by the following
 sentence:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |      | Seller
 warrants that for **** (****) years, starting concurrently with the
 applicable Product Warranty Period, (Epidemic Failure Warranty Period), a
 Product will not experience Epidemic Failure. Epidemic Failure means that within
 either (a) the total population of units of a Product installed at Nortels
 customers sites (collectively, the Installed Base) or (b) a particular
 release/version, manufacturing lot or series of manufacturing lots, or other
 subset of the Installed Base (Subpopulation), a minimum of **** (****) units of a Product
 within that Installed Base or Subpopulation has experienced a failure to
 conform to the Specifications and the Product failure rate has exceeded both
 (i) a Cumulative Failure Rate, as defined in Exhibit P (attached to and
 incorporated in this Amendment 9 as Attachment 2), of **** percent (****%)
 and (ii) a Failure In Time of Service or FITS Rate, as defined in Exhibit P
 (attached to and incorporated in this Amendment 9 as Attachment 2), of ****
 percent (****%) per year. The parties will use the formulas set out in
 Exhibit P to determine whether an Epidemic Failure has occurred.
|     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |      | Notwithstanding
 the above, the parties shall jointly review this Epidemic Failure warranty
 before March 31, 2008 and make modifications that may be necessary based on
 the Mean Time Between Failure rates and other reliability data for the
 Products.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|V.   | Add new
 Subsection 6.6 to the Agreement as follows:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | 6.6 | Seller will
 conduct first piece evaluation when requested by Nortel Networks in writing
 if any of the following occur (i) Significant change in manufacturing process
 (manufacturing location change, manufacturing line is moved, introduction of
 a new manufacturing technique, etc); (ii) Changes that affect product fit,
 form and changes that degrade function or quality; (iii) Change in
 configuration, components, or sub-component parts that affect product fit,
 form, function or quality to the degree they constitute a change in form fit
 and function as defined in ii.; and (iv) a break in production or process,
 for all AudioCodes customers, in excess of **** (****) months unless
 otherwise specified time frame.                                                                                                                                                                                                                                                                                                                                                                                                                                         
|     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|VI.  | For the
 Products described in Exhibit A-10, Seller will provide Technical Support and
 Repair Services as set forth in Exhibits C and H of the Agreement. The
 parties agree that they will work together in good faith to renegotiate the existing
 technical support charges (TSCs) as set forth in Amendment #5 to the
 Agreement by March 31, 2008. If the parties do not reach an agreement on
 TSCs by March 31, 2008 for the total portfolio of Sellers Products; then
 Seller will provide Technical Support and Repair Services for the Products in
 Exhibit A-10 on terms and TSCs that the parties shall mutually agree upon.
 For the avoidance of doubt (a) Nortel is not obligated to purchase Technical
 Support; (b) Seller is not obligated to provide Technical Support and Repair
 Services for the Products in Exhibit A-10 if Nortel does not purchase
 Technical Support; and (c) Sellers TSCs for the Products in Exhibit A-10
 will be at a market competitive rate, currently acknowledged by the parties
 to be ****  **** percent of the Price.

2/9

---



Nortel Confidential

|     |                                                                        |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|---- | ---------------------------------------------------------------------- | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|VII. | Add new
 Subsections 5 and 6 to Exhibit J of the Agreement as follows:
|     |                                                                        |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|     |                                                                        | 5. | Export Control - Seller will comply with all
 applicable import, export and re-export control laws and regulations of the
 countries having jurisdiction with respect to the export of Products and
 technology related to the Product or included in Sellers providing the Services,
 including U.S. deemed export and re-exporting regulations. Seller shall be
 able to demonstrate such compliance to Nortel. Seller will ensure that its
 workers comply with export laws and regulations including, but not limited
 to, tangible and intangible transfers of product or technology and deemed
 exports (as deemed exports is defined and used in U.S. export control law).
 Seller will apply for all licenses necessary for the export of
 Software/Hardware or technology being sold to Nortel and notify Nortel when
 the license is granted, and, if not granted, why the license was denied.
 Seller will submit license applications in a timely manner and advise Nortel
 in writing of any anticipated delays in shipping that may result from delayed
 approval of an application; Seller represents and warrants that Section 6 of
 Exhibit J contains a complete list of Export Control Classification Numbers
 (ECCN), or their equivalent, encryption mechanisms and all other information
 pertaining to export controls, country of origin and preferential trade
 agreements that is applicable to the product as of the Effective Date of the
 Agreement. Seller shall provide to Nortel notice ninety (90) days in advance
 of any change to such export and/or CoO information and Exhibit J shall be
 deemed amended accordingly.
|     |                                                                        |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|     |                                                                        | 6.  | Export Regulations Information:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  

| |  |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
| |  | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| |  | 6.1 | Seller shall
 provide information and support reasonably necessary for Nortel to obtain
 Seller Export Control Classification Numbers (ECCN  designating a category
 of commodities of technology listed in the Commerce Control List of the US
 Export Administration Regulations) or Export Control Number (ECN as
 designated in other countries control lists), and Commodity Classification
 Automated Tracking System (CCATS  that regulate the use of their
 hardware/software) for the Products in a timely manner.
| |  |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
| |  | 6.2 | Sellers
 Products use the following encryption mechanisms and key lengths (Seller will
 provide technical specifications, where required, to enable Nortel to apply
 for any necessary licenses):                                                                                                                                                                                                                                                                                                                           

|                  |  |                   |  |               |  |                                 
|----------------- |  | ----------------- |  | ------------- |  | --------------------------------
|                  |  |                   |  |               |  |                                 
|Name of Algorithm |  | Type of Algorithm |  | Bit
 Strength |  | Purpose of Algorithm            
|                  |  |                   |  |               |  |                                 
|****              |  | Symmetric         |  | ****          |  | Encryption                      
|                  |  |                   |  |               |  |                                 
|****              |  | Symmetric         |  | ****          |  | Encryption                      
|                  |  |                   |  |               |  |                                 
|****              |  | Symmetric         |  | ****          |  | Encryption                      
|                  |  |                   |  |               |  |                                 
|****              |  | Symmetric         |  | ****          |  | Encryption                      
|                  |  |                   |  |               |  |                                 
|****              |  | Symmetric         |  | ****          |  | Authentication                  
|                  |  |                   |  |               |  |                                 
|****              |  | Symmetric         |  | ****          |  | Authentication                  
|                  |  |                   |  |               |  |                                 
|****              |  | Asymmetric        |  | ****          |  | Authentication and KeyManagement
|                  |  |                   |  |               |  |                                 
|****              |  | Asymmetric        |  | ****          |  | Key Management                  
|                  |  |                   |  |               |  |                                 

|      |                                                                   |    |                                                                   |                                                                                                                                   
|----- | ----------------------------------------------------------------- | -- | ----------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------
|      |                                                                   |    |                                                                   | Seller will
 inform Nortel of any changes to the Product regarding encryption and new
 encryption algorithms used during the term.
|      |                                                                   |    |                                                                   |                                                                                                                                   
|      |                                                                   |    | 6.3                                                               | Other
 information pertaining to export regulations including other restrictions, if
 required.                                   
|      |                                                                   |    |                                                                   |                                                                                                                                   
|VIII. | Add new
 Subsection (g) to Exhibit B of the Agreement as follows:
|      |                                                                   |    |                                                                   |                                                                                                                                   
|      |                                                                   | g) | Nortel
 Corporate Standard CS152.34 - Two Dimensional Bar Coding.

3/9

---



Nortel Confidential

IN WITNESS
WHEREOF, the parties have caused this Amendment No. 9 to the Agreement to be
signed by their duly authorized representatives.

|                                               |  |                                                
|---------------------------------------------- |  | -----------------------------------------------
|NORTEL NETWORKS LIMITED                        |  | AUDIOCODES LTD.                                
|                                               |  |                                                
|By: ________________________________________   |  | By: ________________________________________   
|                                               |  |                                                
|Print Name:
 _________________________________ |  | Print Name:
 _________________________________ 
|                                               |  |                                                
|Title:
 ______________________________________ |  | Title:
 _______________________________________
|                                               |  |                                                
|Date:
 ______________________________________  |  | Date:
 _______________________________________ 

4/9

---



Nortel Confidential

ATTACHMENT 1

EXHIBIT
A-10

Mediant 3000 and MediaPack Gateways Product
List

Prices,
Discounts, Delivery and NRE payments

Part I: Product
Prices

|                                        |                                                                                                                         |                |                |                                                                                                                |                                                                                                            |                     |                               
|--------------------------------------- | ----------------------------------------------------------------------------------------------------------------------- | -------------- | -------------- | -------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------- | ------------------- | ------------------------------
|Seller Part No. for the
  Product       | Seller Product
  Description                                                                                            | Nortel
  CPC   | Nortel
  PEC   | Standard
  Product Price
  after Nortels
  cumulative
  total
  purchases of
  Mediant 3000
  exceeds $****US | Special Product
  Price until
  Nortels
  cumulative total
  purchases of
  Mediant 3000
  equals $****US | Product
  Lead time | RoHS-5/6 compliant?
  (Yes/No)
|M3K/8410/CG - 8 T1sM3K/8410/CG/8T1/NG   | Includes:
      Carrier
 Grade chassis     1+1
 TP8410 8T1s     EMS
 board licenses     RTMs     1+1
 Alarm cards | To be assigned | To be assigned | $****                                                                                                          | $****                                                                                                      | 4 weeks             | Yes                           
|M3K/8410/CG - 12 T1sM3K/8410/CG/12T1/NG | Includes:      Carrier
 Grade chassis     1+1
 TP8410 12T1s     EMS
 board licenses     RTMs     1+1
 Alarm cards | To be assigned | To be assigned | $****                                                                                                          | $****                                                                                                      | 4 weeks             | Yes                           
|M3K/8410/CG - 16 T1sM3K/8410/CG/16T1/NG | Includes:      Carrier
 Grade chassis     1+1
 TP8410 16T1s     EMS
 board licenses     RTMs     1+1
 Alarm cards | To be assigned | To be assigned | $****                                                                                                          | $****                                                                                                      | 4 weeks             | Yes                           
|M3K/8410/CG - 21 T1sM3K/8410/CG/21T1/NG | Includes:      Carrier
 Grade chassis     1+1
 TP8410 21T1s     EMS
 board licenses     RTMs     1+1
 Alarm cards | To be assigned | To be assigned | $****                                                                                                          | $****                                                                                                      | 4 weeks             | Yes                           
|M3K/8410/CG - 42 T1sM3K/8410/CG/42T1/NG | Includes:      Carrier
 Grade chassis     1+1
 TP8410 42T1s     EMS
 board licenses     RTMs     1+1
 Alarm cards | To be assigned | To be assigned | $****                                                                                                          | $****                                                                                                      | 4 weeks             | Yes                           
|M3K/8410/CG - 84 T1sM3K/8410/CG/84T1/NG | Includes:      Carrier
 Grade chassis     1+1
 TP8410 84T1s     EMS
 board licenses     RTMs     1+1
 Alarm cards | To be assigned | To be assigned | $****                                                                                                          | $****                                                                                                      | 4 weeks             | Yes                           
|HW/SA/STRATUM3                          | Optional Timing/BITS
 module                                                                                            | To be assigned | To be assigned | $****                                                                                                          | $****                                                                                                      | 4 weeks             | Yes                           
|SW/EMS/SERVER/BASIC                     | EMS Basic Server Software Package                                                                                       | To be assigned | To be assigned | $****                                                                                                          | $****                                                                                                      | 1 week              | Yes                           
|MP112R/2FXS/3AC/SIP-3                   | 2 Channels analog (FXS)
 media gateway                                                                                  | To be assigned | To be assigned | $****                                                                                                          | $****                                                                                                      | 4 weeks             | Yes                           
|MP-124 /FXS                             | 24 Channels analog (FXS)
 media gateway                                                                                 | To be assigned | To be assigned | $****                                                                                                          | $****                                                                                                      | 4 weeks             | Yes                           

Additional
notes and terms:

1.     All
product prices are protected against increases throughout the term of any
contract arising from the quotation

5/9

---



Nortel Confidential

|   |                                                                                                                                                                                                                                                                               
|-- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|2. | Above prices are applicable to the specific configurations and Specifications listed above and in Part IV below.  Nortel and Seller
shall separately agree upon pricing and other terms for any configurations and/or Specifications not listed above and/or in Part IV
below.
|   |                                                                                                                                                                                                                                                                               
|3. | EMS Basic
  Server Software Package is licensed to manage (a) up to 50 Mediant 3000 (M3K)
  Media Gateways and (b) up to 1000 MediaPack (MP) analog Media Gateways. For
  clarity, EMS HW is not included in the EMS Basis Server Software package
  price.                   

Ordering Flexibility

|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|-- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|1. | Seller will
  hold safety stock to support a **** (****) calendar week lead-time. Safety
  stock levels are calculated based on demand variability, component lead-time
  and meeting customer service at ****% service level. Nortel will provide method
  for calculating safety stock.                                                                                                                                                                                                                     
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|2. | Seller will
  accept orders for up to ****% more Product than forecasted, and will deliver
  such Products within the four (4) calendar week lead-time.                                                                                                                                                                                                                                                                                                                                                       
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|3. | Unconsumed
  inventory of components driven by the Nortel forecast within agreed to
  lead-time will be jointly reviewed on a quarterly basis.                                                                                                                                                                                                                                                                                                                                                                
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|4. | Seller is to
  use best purchasing practices to reduce excess inventory over Sellers entire
  demand, and use best efforts to apply unconsumed inventory to other products
  and customer orders. At the end of twelve (12) months, Nortel agrees to
  purchase (at Sellers original cost) unconsumed inventory of components that
  are unique to the Nortel solution and can not be utilized on any other of
  Sellers products, regardless of whether there is demand for those other
  products or not.
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|5. | Nortel is
  not responsible for any inventory driven in excess to Nortel forecast.                                                                                                                                                                                                                                                                                                                                                                                                                            

Part II: Non-reoccurring engineering (NRE)
Payments & Pre-General Availability (GA) Product Purchases

Seller may submit
invoices to Nortel Networks for NRE payments dated no earlier than the first
calendar day of the quarter in which the work activity is to be completed,
provided however if Nortel notifies Seller in writing before the first day of a
calendar quarter that it wants Seller to stop the work activity that is the
basis of the NRE, then Nortel will have no further obligations to Seller other
than to pay Seller for work completed prior to the date of such notification. Nortel
will pay such invoices upon Sellers documented completion of the required
activities and in accordance with Sellers standard payment terms.

Two weeks
before the end of each calendar quarter Seller must submit to Nortel a report
that provides a status of their activity relative to the statement of work
milestones.

|                 |                                                                                                                                                                             |  |                                                                                                                                                                    | 
|---------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------ | 
|Planned
  Timing | NRE
  Payments                                                                                                                                                              |  | Payment Milestone                                                                                                                                                 
|4Q 2007          | $****                                                                                                                                                                       |  | OEM
  amendment signing including Statement of Work. This payment is for receipt of
  all Audiocodes content required to support AS 5300 Release 1 payment trigger
|Þ                | Deliverables
  specified in Section 2 of the SOW are completed with the exception of **** on
  IAD                                                                         
|                 |                                                                                                                                                                             |  |                                                                                                                                                                    | 
|1Q 2008          | $****                                                                                                                                                                       |  | Known gating
  problems resolved in Audiocodes Release 5.4 and Nortel AS5300 successful PV
  entry for Release 1                                                  
|Þ                | All
  deliverables specified in Sections 2.1, 2.2 and 2.3 of the SOW are completed (including
  **** on IAD)                                                               
|Þ                | No content
  issues gating AS 5300 Release 1 PV entry                                                                                                                      
|Þ                | Seller
  representation and warrant that it has executed a contract with a third party
  that enables AudioCodes to incorporate **** technology into the AudioCodes gateway
|                 |                                                                                                                                                                             |  |                                                                                                                                                                    | 
|2Q 2008          | $****                                                                                                                                                                       |  | AS5300
  Release 1.0 JITC entry                                                                                                                                   
|Þ                | Payment
  Trigger:                                                                                                                                                         
|                 | Delivery of
  Audiocodes specific content with no gating issued to JITC entry on April 28th,
  2008                                                                        
|                 |                                                                                                                                                                             |  |                                                                                                                                                                    | 

6/9

---



Nortel Confidential

|                 |                    |                                                                                                                                             |                                                                                                                               |                                                     
|---------------- | ------------------ | ------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------
|Planned
  Timing | NRE
  Payments     |                                                                                                                                             | Payment Milestone                                                                                                            
|3Q 2008          | $****              |                                                                                                                                             | Receipt of
  Audiocodes as specified in the SOW.                                                                             
|                 | Payment
  Trigger:
|                 | Þ                  | SOW sections
  3.2 Items #7.1, #8.1 and #12,                                                                                               
|                 | Þ                  | SOW section
  3.3 Item #12                                                                                                                 
|                 | Þ                  | SOW section
  3.4 Item #12 and Item #14                                                                                                    
|                 | Þ                  | statement
  from Audiocodes that **** and **** delivery is on schedule for release by
  date committed in SOW sections 3.2 Items #7, and #8
|                 |                    |                                                                                                                                             |                                                                                                                               |                                                     
|4Q 2008          | $****              |                                                                                                                                             | Þ                                                                                                                             | Release of
  fixes required for entry into Nortel PV
|                 | Þ                  | Provide ****
  content required for saleable product                                                                                     
|                 |                    |                                                                                                                                             |                                                                                                                               |                                                     
|1Q 2009          | $****              |                                                                                                                                             | Receipt of
  all Release 2 content at GA quality (as detailed in the Statement of Work) AS
  5300 including all functionality
|                 | Payment
  Trigger:
|                 | Þ                  | All
  deliverables specified in Section 3 of the SOW are completed (including **** and
  ****)                                             
|Totals           | $****              |                                                                                                                                             |                                                                                                                               |                                                     

Nortel shall
buy the dollar quantity of Products set forth in the table below and pay in
accordance with Nortels standard payment terms with Seller, unless Nortel
notifies Seller to stop work on this project, in which case Nortel has no
further obligation to Seller.

|        |                                  |  |                                                                                                                                                                                                    | 
|------- | -------------------------------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | 
|Timing  | $ value of
  Product
  Purchases |  | Payment Milestone                                                                                                                                                                                 
|4Q 2007 | $****                            |  | Payment for
  lab build-out of Mediant 3000 PRI Gateways, MediaPack Analog Station Gateways
  and EMS systems including hardware and software. This represents a purchase
  of 10-12 PRI Gateways.
|3Q 2008 | $****                            |  | AS 5300
  product that is ready for general availability including **** and **** functionality
  sufficient to enter CONUS pilot                                                                  
|Totals  | $****                            |  |                                                                                                                                                                                                    | 

In the event
that Seller either (a) cancels the feature development of the Mediant 3000
and/or MediaPack Gateway products
as described in the Statement of Work (SOW) for reasons within its reasonable
control prior to product general availability (GA) or (b) doesnt fulfill its
obligations under this Amendment #9, Nortel shall be entitled to return all the
Products and products that it has purchased under this Agreement for a full
refund of the NRE payment and the purchase price of the product. The refund
attributed to the purchase price of the products shall be in the form of a
credit against future purchases of products or Products from Seller.

Part III  Exclusivity

Seller
acknowledges that Nortel Networks has exclusivity for **** (****) months to
**** capability starting from the general availability (GA) date of the
Audiocodes Mediant 3000 (M3K) gateway with **** functionality. During the
applicable exclusivity period, Seller shall not use or sell the stated items in
any form whatsoever other than to supply Product to Nortel Networks. Exclusivity
shall expire if Nortel cancels the Project and claims refund of more than ****
percent (****%) of the **** dollars ($****) in NRE payment unless other
financial arrangements are agreed upon between the parties.

Part IV - Specifications:

References to
telecommunications standards in this Exhibit will include amendments and
replacements of the standards, as they occur from time to time during the Term.
In the event of any conflict between the marking, labeling and packaging
requirements set out in this Exhibit and those which may be set out in the
Specifications, the requirements set out in the Specifications shall take
precedence.

7/9

---



Nortel Confidential

| |                                               |  |  |                                                                                                                                                                               |                                                                                               | 
| | --------------------------------------------- |  |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------- | 
| |                                               |  |  |                                                                                                                                                                               |                                                                                               | 
| | Document ID                                   |  |  | Description and specific provisions                                                                                                                                           |                                                                                              
| |                                               |  |  |                                                                                                                                                                               |                                                                                               | 
| | Statement of Work                             |  |  | AS5300-Audiocodes PRI GW and IAD SOW AGREED Dec 7, 2007 v1 18. pdf
 (SHA-1 hash value of: 2CB89FEA4C41825874A2BC018618B782DA113F90) as revised and
 updated from time to time |                                                                                              
| |                                               |  |  |                                                                                                                                                                               |                                                                                               | 
| | Nortel Procurement Specification No. 00200    |  |  | Issue No. 2, dated April 2006, as revised
 and updated from time to time                                                                                                      |                                                                                              
| |                                               |  |  |                                                                                                                                                                               |                                                                                               | 
| | EMS Platform
 detailed hardware specification |  |  | a.                                                                                                                                                                            | Resource EMS
 Server                                                                          | 
| |                                               |  |  | b.                                                                                                                                                                            | Hardware
 Sun Fire V215                                                                     | 
| |                                               |  |  | c.                                                                                                                                                                            | Operating
 System    Solaris 64-bit,
 version 10                                             | 
| |                                               |  |  | d.                                                                                                                                                                            | Memory1 GB RAM (EMS only). If the APS is to be
 loaded later, the server memory must be 2 GB. | 
| |                                               |  |  | e.                                                                                                                                                                            | Disk space
 73 GB                                                                             | 
| |                                               |  |  | f.                                                                                                                                                                            | Processor
 1.5 GHz UltraSPARC IIIi                                                            | 
| |                                               |  |  | g.                                                                                                                                                                            | Swap space2
 GB (EMS only). If the APS is to be loaded later, the swap space must be 4 GB.    | 
| |                                               |  |  | h.                                                                                                                                                                            | CD/DVD-ROM
 Local                                                                             | 
| |                                               |  |  | Note  Upon
 notice to Nortel, EMS hardware platform may change from time to time.                                                                                            |                                                                                              
| |                                               |  |  |                                                                                                                                                                               |                                                                                               | 

8/9

---



Nortel Confidential

ATTACHMENT 2

Exhibit P

EPIDEMIC FAILURE ELEMENTS

For purposes
of determining whether an Epidemic Failure has occurred under Section 12.7 of
the Agreement, the following will apply:

Cumulative
Failure Rate = The total quantity of units of a Product that fail calculated
and expressed as a percentage of the total number of units within the Installed
Base or the Subpopulation identified, as applicable.

Failure in
Time of Service or FITS Rate = The total quantity of units of a Product that
fail calculated and expressed as a percentage of the cumulative operating time
in years of all the units within that Installed Base or Subpopulation
identified, as applicable.

(EQUATION)

(EQUATION)

Where, 
M = Total number of units of a Product within the Installed Base or
Subpopulation identified, as applicable 
N =  Total number of units of a Product within the Installed Base or
Subpopulation identified, as applicable, which units have experienced a failure
to conform to the Specifications due to the same type of hardware defect

9/9

---