---

---

Exhibit 4.32

Nortel Networks Agreement No. 011449
Nortel Networks Amendment No. 011449(6)

# AMENDMENT #6

# TO

# OEM PURCHASE AND SALE
AGREEMENT NO. 011449 (Agreement)

# BETWEEN AUDIOCODES
LTD. AND NORTEL NETWORKS LIMITED

This Amendment #6 to OEM Purchase and
Sale Agreement No. 011449 by and between Nortel Networks Limited, a Canada corporation
with offices located at 8200 Dixie Road, Suite 100, Brampton, Ontario, Canada L6T 5P6
(Nortel) and AudioCodes Ltd., an Israeli corporation with offices located at 1 Hayarden
Street, Airport City Lod, 70151 (Seller), will be effective as of April 1, 2005.

WHEREAS, Nortel and Seller entered
into an OEM Purchase and Sale Agreement dated April 28, 2003, as amended
(Agreement); and

WHEREAS, Nortel and Seller wish to
amend the Agreement for the purposes of Sellers obtaining the use of Nortels
code-signing certificate and private key in relation to a Nortel customers use of
the Mediant Products;

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

|1. | Amend
the Agreement by adding new Section 3.1 under Section 3 (Grant of Rights) as follows:
|-- | -------------------------------------------------------------------------------------------

| | 3.1. | Code Signing Certificate License AudioCodes agrees to use
Nortel                Networks code-signing certificate and associated private key
in all                applicable Nortel Networks-specific Software loads, (i.e.,
MG3200EMS, MG3500EMS,                MS2010 and MS2020). In that regard Nortel Networks
hereby grants AudioCodes the                right to use Nortel Networks code-signing
certificate and associated                private key on AudioCodes Load Builder
Server for the limited purpose of                AudioCodes applying the
code-signing certificate and private key (through                AudioCodes jar
files) to the described Nortel Networks-specific Software                loads to support
Nortel Networks customers launching Audiocodes                applications. The
preceding license is restricted to use with the described                Software and
must not be used for any other purpose, including, but not limited                to, use
on software loads that are provided to AudioCodes customers other than
               Nortel Networks.
| | ----- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|2. | Except
for Amendments 1 through 6, in all other respects the Agreement shall remain unchanged.
|-- | ----------------------------------------------------------------------------------------------

1

---

---



IN WITNESS WHEREOF, the parties have
caused this Amendment No. 6 to the Agreement to be signed by their duly authorized
representatives.

|NORTEL NETWORKS LIMITEDBy:  /s/ Nancy Scott
Print Name: Nancy ScottTitle:  SR Mgr. Supply Mgmt.
Date:  May 6, 2005 |  | AUDIOCODES LTD.By:  /s/ Ben Rabinowitz
Print Name:  Ben RabinowitzTitle:  VP Marketing and Sales, NA 
Date:  April 27, 2005
|-------------------------------------------------------------------------------------------------------------------------------- |  | -----------------------------------------------------------------------------------------------------------------------------------------

2

---

---