Exhibit 4.24.1  Additional Agreement No. 1 to Contract between No. 747-05-23(03-01-1035) dated January 1, 2006  Moscow
  Dated:
  August 16, 2007  Rostelecom,
Open Joint-Stock Company for Long-Distance and International Telecommunications,
hereinafter, Rostelecom, represented by OAO Rostelecom General Director Dmitry Yevgenievich Yerokhin, authorized to act by the
Charter, on the one part, and North-Western Telecom, Open Joint-Stock Company,
hereinafter referred to as the Operator, represented by General Director Vladimir Aleksandrovich Akulich, authorized to act by the
Charter, on the other part hereinafter collectively referred to as the Parties,
and severally, as Party, have entered into this Additional Agreement
(hereinafter, the Agreement) on the incorporation of the below-listed
amendments to Contract No. 747-05-23 entered into by the Parties on January 01,
2006 (hereinafter, the Contract), as follows:  1.Clause
1.4. of the Contract shall be amended as follows:  1.4. Accrued income means money funds
including outlay taxes to the Operator by the Users for the Services rendered
in the corresponding month.  2.Clause 1.5. of the
Contract shall be amended as follows:  1.5. Associated Operator shall mean a telecommunications operator
whose telecommunication network is connected to the Operators network on the
local or zonal level and in respect of whose Users the Operator performs legal
and actual acts pursuant to Clause 2 hereof  3.. Clause 1.6. of the
Contract shall be amended as follows:  1.6. Users
(Subscribers) means legal entities and individuals ordering and (or) using
Rostelecoms telephone services via the Operator or via a telecommunications
operator whose telecommunications network is connected to the Operators
network on the local or zonal level, in respect of which legal entities and
individuals the Operator performs legal and actual acts pursuant to Clause 2
hereof.3.  4.Clause 1.7. of the
Contract shall be amended as follows:  1.7. Revenue earned means money funds actually received by the
Operator from the Users in the Reporting period on account of payment for the
Telecommunication Services.  5.Clause
1.13. of the Contract shall be amended
as follows:  6.1.13.
Reporting period means a calendar
month during which Telecommunication Services were rendered to the Users.  7.Section 3 of the
Contract shall be supplemented with Clause 
3.3.13 as follows: The Operator shall, on a monthly basis and until the
10th day, submit to Rostelecom a list of operators whose telecommunications
networks are connected to the Operators network on a local or zonal level as
of the last calendar day of the reporting period, in respect of whose Users the
Operator performs legal and actual acts pursuant to Clause 2 hereof (list of
operators). The said report shall be submitted according to the form indicated
in Appendix No. 12 (List of Operators) hereto.  8.Appendix 3 hereto
shall be amended in version 2  9.Appendix 4 hereto
shall be amended in version 2  10.Appendix 4 hereto shall
be amended in version 2


11.Appendix No.7 hereto
shall be amended in version 2;  12.Appendix 8 hereto shall
be amended in version 2  13.This Agreement is an
integral part of the Contract.  14.All terms used in this
Agreement have a meaning, fixed for them in the Contract.  15.All the rest, not
indicated in this Agreement, is subject to the provisions of the Contract.  16.The agreement is issued
in the Russian language in two original counterparts, one for each Party.  17.This Agreement shall
become effective as its date and shall remain in effect until the expiration of
Contract No.747-05-23 (03-01-1035)dated January
01, 2006. The Parties recognize that the terms and conditions of their
Agreement shall apply to their relationships arising as from the date of the
Contract dated January 01, 2006.  18.Clause 12.5. shall be
supplemented with appendix No.12 The list of operators whose telecommunication
networks are connected to the Operators network and in respect of whose users
the Operator has performed legal and actual acts pursuant to Clause 2 of the
Contract  19.This agreement is
accompanied with:  a.
  Appendix
  3 shall be amended in version 2:b.
  Appendix
  4 shall be amended in version 2:c.
  Appendix
  5 shall be amended in version 2:d.
  Appendix
  7 shall be amended in version 2:e.
  Appendix
  8 shall be amended in version 2:f.
  Appendix No.
  12g.  20.Signatures of the
Parties.  OAO Rostelecom:
  OJSC NWT:General Director
  General DirectorD.Ye.
  YerokhinDt.                                  
  2006
  Dt.                                  
  2006Seal here
  Seal here