**Exhibit 4.27.7**

**AdditionalAgreement No. 7to Contract on Network Connection between OAO Rostlecom and OAO UralsvyazinformNo. UF/D-MRK-01/03 dated August 01, 2003 (as amended byAgreement dated January 01, 2006)**
| Date: |   | March 11, 2006 |
|-------|--------|---------------------|

 

**Rostelecom,Open Joint-Stock Company for Long-Distance and International Telecommunications**, hereinafter, “Rostelecom”, represented by OAORostelecom General Director **Dmitry YevgenievichYerokhin**, authorized to act by Charter, on the one part, and **Open Joint Stock Company “Uralsvyazinform”**,hereinafter referred to as the “Operator”, represented by General Director **Anatoliy Yevgenievich Ufimkin**, authorizedto act by Charter, on the other part, hereinafter collectively referred to asthe “Parties”, signed this Additional Agreement (hereinafter — Agreement) to Contract on Network Connection dated January 01,2006 (hereinafter — “Contract”) as follows:

1.               To add thefollowing clauses to Appendix 9 to the Contract:

«

8.               The Operator shallin case of technical equipment of software failure and because of the effectvarious other conditions resulting in garbling, loss of the data orimpossibility of timely transfer, to inform Rostelecom about the reasons ofsuch failures with retransmission of reliable data.

9.               Cooperation in theupdating of the data on Subscribers between the Parties is realized through thedata exchange in an approved format set in Appendix 9 to the Contract. Thefollowing data should be transmitted: data on the Subscribers, the list ofwhich is set by Appendix 9 and which are changed through the Accounting Period.

10.         Basic unit for the cost of the Subscribers’database updating service is the total reliable information concerning oneOperator’s Subscriber account. Reliability of the data is the correspondence ofthe data to the format of Appendix 9 to this Contract and the condition of theOperator’s Subscribers’ database on the condition on the 1st day of the Billingperiod.

11.         Rostelecom makes monthlypayment for the services under Appendix 1 to this Contract per 1 base unit ofreliable and timely transmitted data on the Subscribers of the Operator.

12.         The Operator by the 5thday of the Billing Period sends to Rostelecom an Act and an invoice indicatingthe effective volume of the Subscriber’s database updating services within theAccounting Period, and Rostelecom shall by the 8th of the Billing periodapproves the Act. If there are any remarks in connection to the volume of theservices rendered, Rostelecom approves the Act with the remarks. The Partiesshall by the 20th day of the Billing period to reconcile these remarks. The Form ofthe Act is given in Appendix 1 to this Agreement.

13.         Rostelecom pays for theSubscriber’s database updating services no later than 10 days after signing of theAct by the Parties.

14.         If information transmitted for the Operator’sSubscriber’s database updating services was presented incorrectly or needsadditional data Rostelecom sends an inquiry to the Operator. Retransmission ofthe information on the Subscribers, the correction of the data is free ofcharge if performed because of the fault of the Operator».

2.               The agreement isissued in the Russian language in two copies, one for  each Party.

3.               All terms used inthis Agreement have a meaning, fixed for them in the Contract.

4.               This Agreement isan inseparable part of the Contract.

5.               All the rest, notindicated in this Agreement, is subject to the provisions of the Contract.

----

6.               This Agreementshall come into force from the date hereof. The Parties hereby establish thatterms and conditions of the Agreement entered into thereby shall apply to theirrelations arisen from the date of the Contract on Telecommunications NetworkConnection dated January 01, 2006.
| **OAO Rostelecom:**            |   | **OAO Uralsvyazinform:**            |
|--------------------------------|--------|-------------------------------------|
|                           |   |                                |
| Legal address: 127091, Moscow, |   | Legal address: 620014               |
| Delegatskaya st., 5            |   | Yekaterinburg, Moskovskaya  st., 11 |
|                           |   |                                |
| **General Director**           |   | General Director                    |
| OAO Rostelecom                 |   | OAO Uralsvyazinform                 |
|                           |   |                                |
| /signed/ D.Ye. Yerokhin        |   | /signed/ A. Ya. Ufimkin             |
| Dated 11.03.2006               |   | Dated 11.03.2006                    |
| Seal here                      |   | Seal here                           |

 

----

**Appendix No. 1to Agreementdated January 01, 2006**

**Form 1**

**Services Report,Under Contract dated January 01, 2006**

**Rostelecom, Open Joint-Stock Company forLong-Distance and International Telecommunications**,hereinafter, “Rostelecom”, represented by OAO Rostelecom General Director **Dmitry Yevgenievich Yerokhin**, authorized to act by Charter,on the one part, and **Open Joint Stock Company“Uralsvyazinform”**, hereinafter referred to as the “Operator”,represented by General Director **AnatoliyYevgenievich Ufimkin,** authorized to act by Charter, on the otherpart, hereinafter collectively referred to as the “Parties”, confirming thefollowing services rendered by the Parties to each other:

Servicesrendered by the Operator
| **Ref.  No.** | ** ** | **Description of the service**            | ** ** | **Measurement  Unit** | ** ** | **Quantity** | ** ** | **Service  Tariff,  rubles/pcs** | ** ** | **Service Cost  w/o VAT,  rubles** | ** ** | **including  VAT,  rubles** | ** ** | **Service Cost  inc. VAT,  rubles** |
|---------------|------------|----------------------------------------------------------|------------|-----------------------|------------|--------------|------------|----------------------------------|------------|----------------------------------------------|------------|-----------------------------|------------|-----------------------------------------------|
| **1**         | ** ** | **2**                                                    | ** ** | **3**                 | ** ** | **4**        | ** ** | **5**                            | ** ** | **6**                                        | ** ** | **7**                       | ** ** | **8**                                         |
| 1             |       | Actualization of data on the Operator’s subscribers |       |                  |       |         |       |                             |       |                                         |       |                        |       |                                          |
| 2             |       |                                                     |       |                  |       |         |       |                             |       |                                         | ** ** | ** **                  | ** ** | ** **                                    |
| Total         |       |                                                     | ** ** | ** **            | ** ** | ** **   | ** ** | ** **                       | ** ** | ** **                                   | ** ** | ** **                  | ** ** | ** **                                    |

** **

**The rendered services cost aggregated _______________,including VAT _______________.**

The services were presented properly and according toAgreement terms.
| **OAO Rostelecom:**            |   | **OAO Uralsvyazinform:**            |
|--------------------------------|--------|-------------------------------------|
|                           |   |                                |
| Legal address: 127091, Moscow, |   | Legal address: 620014               |
| Delegatskaya st., 5            |   | Yekaterinburg, Moskovskaya  st., 11 |
|                           |   |                                |
| **General Director**           |   | General Director                    |
| OAO Rostelecom                 |   | OAO Uralsvyazinform                 |
|                           |   |                                |
| /signed/ D.Ye. Yerokhin        |   | /signed/ A. Ya. Ufimkin             |
| Dated 11.03.2006               |   | Dated 11.03.2006                    |
| Seal here                      |   | Seal here                           |

 

----