**Exhibit 4.27.5**

**AdditionalAgreement No. 5to Contract on Network Connection between OAO Rostlecom and OAO UralsvyazinformNo. UF/D-MRK-01/03 dated August 01, 2003 (as amended by Agreement dated January 01,2006)**
|          Moscow |   | March 11, 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”, and separatelyreferred to as “Party” signed this Additional Agreement (hereinafter —Agreement) on the following additions to Appendix 9  (version No. 2) to the Contract onNetwork Connection (hereinafter — Contract):

1.                Tables “Details of recipient ofthe bill (Subscriber)” and “Subscribers’ Numbers (Phone)”  are changed by the tables of the followingwording:

**Detailsof recipient of the bill (Subscriber)**
| **Attribute  name** | ** ** | **Obligation degree**           | ** ** | **Acceptable values**                                                                                               | ** ** | **Description**                                                             |
|---------------------|------------|---------------------------------|------------|---------------------------------------------------------------------------------------------------------------------|------------|-----------------------------------------------------------------------------|
| subscriber_id       |       | Obligatory given as a parameter |       | Symbol line of 15 digits                                                                                            |       | The unique identifier of the Subscriber within the  Operator’s company |
| legal_entity        |       | All subscribers                 |       | 0-Individuals Individual  1-legal entity                                                                            |       | Feature of a legal entity                                                   |
| category            |       | All subscribers                 |       | 0-Budgetary organizations  1-Self-sustained organizations  2-population  3-Non-incorporated individual entrepreneur |       | Type of subscriber                                                          |

 

**Subscribers’ Numbers (Phone)**
| **Attribute  name** | ** ** | **Obligation degree**                 | ** ** | **Acceptable values**                                                             | ** ** | **Description**                                                         |
|---------------------|------------|---------------------------------------|------------|-----------------------------------------------------------------------------------|------------|-------------------------------------------------------------------------|
| phone_number        |       | Obligatory given as a parameter       |       | Line of 10 characters (figures only)                                              |       | Full subscriber number                                                  |
| device              |       | All subscribers                       |       | 0-telephone  1-IPT and ACO                                                        |       | Type of the subscriber gear                                             |
| price_plan          |       | All subscribers                       |       | 0-office  1-population  2-Self-sustained organizations  3-Budgetary organizations |       | Tariff                                                                  |
| vat_free            |       | Diplomatic mission or their employees |       | 0-default VAT rate  1-0% VAT rate                                                 |       | The sign of 0% VAT rate application to the  realization of the services |

 

2.                                               ThisAgreement is an inseparable part of the Contract.

3.                                               Allterms used in this Agreement have a meaning, fixed for them in the Contract.

4.                                                Allthe rest, not indicated in this Agreement, is subject to the provisions of theContract.

5.                                                Theagreement is issued in the Russian language in two counterparts, one for  each Party.

6.                                                TheAgreement comes into effect since the date of its execution and is valid till01.04.2006. If 

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neither Partyannounces termination of this Agreement within thirty (30) calendar days beforeits stated expiration, this Agreement shall be automatically extended for eachsubsequent period of three calendar months. The number of periods for which theeffect hereof can be prolonged is not limited. The Parties hereby establishthat terms and conditions of the Agreement entered into thereby shall apply totheir relations arisen from the date of the Contract on TelecommunicationsNetwork Connection dated January 01, 2006.

7.                                                Afterthe termination of this Agreement in Appendix 9 (Version No. 2) to theContract the Tables “Details of the recipient of the bill (Subscriber)” and “Subscribers’Phone Number Data” shall be applied in the wording of Appendix 9 (Version No. 2),existing on the day previous to the day when this Agreement enters in force.

8.                                               Detailsand Signatures of the Parties
| **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                           |

 

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