Exhibit 4.20.2  Additional Agreement No. 2 to Contract on connection of telecommunication networks as amended by
Agreement No.1097-05 dated December 27, 2005 , between OAO Rostelecom and
OJSC VolgaTelecom  Moscow
  Dated: 24 July, 2006  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 VolgaTelecom, Open Joint-Stock Company, hereinafter referred to as
the Operator, represented by OAO VolgaTelecom General Director Sergey Valeryevich Omelchenko, 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 the Contract on Network Connection (hereinafter, the Contract),
as follows:  1.To add to the Contract the
clause of the following wording: To demand from the Operator the information
on numbering capacity of the lines of the Associated Operators; mark it as
clause 3.2.5.  2.Clause 3.3.3.of
the Contractshall be amended as follows: to
provide the completeness and correctness of the information submitted to
Rostelecom on the numbering capacity of the Associated Operators and the
numbering capacity from which the Traffic transfer used for Service
Telecommunication is initiated.  3.To add to the Contract clause
3.3.13.that states: to provide the
recording and the billing of the Services according to the traffic in
accordance to the provisions of this Contract.  4.To add to the Contract
clause 3.4.4.that states: To initiate
control of submitted by Rostelecom data on the volume of the Service for
Traffic transfer.  5.Clause 5.8.
of the Contract shall be amended as follows: The contents and procedure of the
Operators transmission of information on the Associated Operators numbering
capacity and the Operators numbering capacity which initiates traffic related
to Service Telecommunication that Rostelecom requires for the purpose of
settlements for Traffic Admission Service is established by Section 6 and
Appendix No.5. The contents and procedure of transmission of information on
Users (including the number of the User initiating the call) that Rostelecom
requires for the purpose of settlements for long-distance and international
telecommunication and contents and procedure of consideration of claims is established
by Appendix No.9 hereto. Data updating about all the Users not connected to the
activities described in clause 6 (except for paragraphs 1 and 3 of clause 6) of
Appendix 9 to this Contract is performed by the Operator in compliance with the
Additional Agreement to this Contract that can be concluded by the Parties
within the validity period of this Contract.  6.Clauses 6.2.
6.10 of the Contractshall be amended as follows:  6.2. The Operator shall pay for the
Interconnection services in accordance with rates specified in Appendix No. 1
attached herein.  6.3. Should the rates of Interconnection
services and Traffic Admission Services be changed by the Federal executive
authority of the Russian Federation responsible for adjustment of tariffs for
such services the Parties shall introduce new tariffs from the date specified
in the order of the Federal executive authority of the Russian Federation by
means of conclusion of the Additional Agreement to this Contract that should be
signed by the Parties in this case.  1


6.4. The Operator shall pay for the
Connection Service on a monthly basis, in accordance with Appendix No. 7
hereto.  6.5. For billing purposes the Parties shall exchange the data on the volume
of the Interconnection services and Traffic Admission Services as follows:  6.5.1. The Operator no later than the last day of the Reporting period
(in accordance with calendar possibilities) submitted to Rostelecom detailed
information on number capacities of the Associated Operators, numbering
capacity from which the traffic of the Service Telecommunications is initiated
and numbers of pay telephones and call offices in accordance to Appendices Nos
5 and 9.  6.5.2. No later than the 6th day of the Billing Period
Rostelecom submits to the Operator a Report on the volumes of the Services
rendered for the Traffic Admission Services with the following data:  a) on the volumes of the Services rendered for zone
call initiation from the Operators network including on codes 80X 100, 80X
200, 8-10-800 and on codes 80X X1X2X3  (where X1X2X3-
is the code of the IS Operator interconnected to Rostelecoms network);  b) on the volumes of the Services rendered for zone
call initiation from the Associated Operators networks including on codes 80X
100, 80X 200, 8-10-800 and on codes 80X X1X2X3  (where X1X2X3-
is the code of the IS Operator interconnected to Rostelecoms network);  c) on the volume of the Services rendered for the
call termination to the Operators network;  d) on the volume of the Services rendered for
call termination to the Associated Operators networks.  6.5.3. The Parties shall
check and reconcile the data on the volume of Traffic Admission Services
rendered (obtained) within the Reporting period in accordance with clause 6.6.2
herein.  6.6. By the 8thday of the
Billing period one Party shall submit to the other Party the Traffic Admission
Services Report with the following data:  6.6.1. Operator:  a) on the Services rendered for the Services rendered for zone call
initiation from the Operators network including on codes 80X 100, 80X 200 and
on codes 80X X1X2X3  (where X1X2X3-
is the code of the IS Operator interconnected to Rostelecoms network);  b) on the Services rendered for the Services rendered for zone call
initiation from the Associated Operators networks including on codes 80X 100,
80X 200 and on codes 80X X1X2X3  (where X1X2X3-
is the code of the IS Operator interconnected to Rostelecoms network);  c) on the Services rendered for the call termination to the Operators
network;  d) on the Services rendered for call termination to the Associated
Operators networks.  6.6.2. Rostelecom:  a) for the Interconnection services rendered.  2


6.7. By the 9th day of the Billing
Period each Party signs a corresponding Act: Rostelecom shall sign the Traffic
Admission Services Report; The Operator shall sign the Interconnection services
Report.  6.8. The Parties shall provide invoices for
Interconnection services and Traffic Admission Services by the 10th day of the
Billing period. The copies of invoices, the Act of Acceptance of services shall
be sent by fax, the originals shall be sent by mail.  6.9. Without prejudice to provisions of
clause 6.8. each Party shall be entitled to check the data submitted by the
other Party and reconcile with its own data to verify absence of discrepancies
in accordance with terms specified herein. If discrepancies of the data of the
Parties in exceed 3 % plus/minus of the volume and cost parameters of the
services rendered according to the Act of Acceptance, one Party shall send by
the 17thday of the Billing Period at the latest to the
other Party the Reconciliation Report indicating confirmed and rejected
amounts.  In case any Party presents the Reconciliation
Report the Parties shall carry on the activities to correct and to eliminate
the discrepancies as prescribed in Appendix 6 of this Contract. After the
reasons of discrepancies have been revealed the Parties sign the Act on the
regulation of the discrepancies indicating the approved volumes and costs of
the services. Differences in volumes and costs of the services indicated in the
Acts of Acceptance and the Acts on the regulation of the discrepancies is set
off in the following Billing period.  7.Clause 9.6 of the Contract
shall be amended as follows: The Operator is responsible for the timely and
complete data submission on the numbering capacity of the Associated Operator,
the numbering capacity from which the traffic connected to the Service
Telecommunication is initiated and on the numbering capacity of the pay phones
and call offices.  8.Clause 9.7 of the Contract
shall be amended as follows:   If invalid data has been submitted by
Rostelecom (or failure to submit the data, or delayed submission of the data)
on the volumes of the traffic transfer service by the Operator on the
stipulation that, the Associated Operator receiving traffic (incoming traffic)
from Rostelecoms network through Operators network, has submitted to the
Operator a claim for forfeit and/or indemnity for the losses and the amount of
funds payable for incoming traffic to this Operators network calculated on the
basis of invalid data provided is less than the amount payable for actual services
rendered, then the Operator shall be entitled to claim indemnity for the losses
from Rostelecom including expenses of the Operator, inflicted in connection
with aforesaid claims by such Associated Operator. This forfeit must be paid by
Rostelecom to the Operator within the period of ten (10) banking days from
the moment of the receipt of the corresponding payment demand.  9.Appendix 5 of the Contract
shall be amended as follows:  «  Appendix No. 5 (version 2) to Contract as amended by
Agreement No.1097-05 dated December 27, 2005.  Order of Interaction between Rostelecom and the Operator Participating
in the Process of Exchange of Information on the Services Rendered  1.This Appendix determines the
order of interaction between Rostelecom and the Operator participating in the
process of exchange of information on the traffic admission Services.  2.This Appendix determines:  3


2.1.the format and order of submission by the Operator
of the information on the numbering capacity of the networks of Associated
Operators;  2.2.the format and order of submission of the data on
traffic admission Services.  3.The Operator submits the
information on the numbering capacity of the networks of Associated Operators
in the format of Table 1, indicated in para. 6.6.1 hereof, the information on
the numbering capacity with associated with the Service traffic, and the data
on pay phones and call offices in the format established in Appendix 9.  4.The Operator submits the information
about changes in numeral capacities, allotted by the Associated Operators
during the Reporting period, in the format of Table 1 of this Agreement.  5.Rostelecom submits to the
Operator monthly reports on the volume of the rendered Traffic admission
Services, containing the data:  a) on the volume and cost of the Services rendered for long-distance
initiation of call from the Operators network, including codes 80X 100, 80X
200, 8-10-800 and 80X X1X2X3  (where X1X2X3-
is the code of the Inquiry System (IS) Operator connected to the network of
Rostelecom);  b)  on the volume and cost of the
Services rendered for call transit (long-distance initiation of call from the
Associated Operators network, including codes 80X 100, 80X 200, 8-10-800 and
80X X1X2X3  (where X1X2X3- is the code of
the ISS Operator connected to the network of Rostelecom);  c) on the summary volume and cost of the Services rendered for
termination of call to the Operators network;  d) on the summary volume and cost of the Services
rendered for termination of call to the Associated Operators network.  6.The requirements for the
formation of reports:  ·in volume
figures only the actually performed traffic must be considered, i.e. the
traffic registered on the commutator by response of the called number; ·the volume of
the traffic admission services rendered is estimated for the point of
connection of the Operators network to the network of Rostelecom; ·Service traffic
(the traffic for the service network) is not included into reports; ·the
long-distance and international telecommunications traffic via pay phones and
call offices is included onto reports; ·the
tarification is performed in accordance with para. 6.1. of the Agreement; ·reports on the
Service of long-distance initiation of call from the Operators network and the
Call Transit Services shall include details of incoming long-distance and
international ABC codes; ·the reports on
the Service of call end indicate the summary volume of the outgoing ABC codes; ·the reports are
drawn up in the Excel format. The form of data presentation in specified in
Table 2 of this Appendix.  The
format of data presentation  Table 1. The structure of the file for
submission of information about numbering capacity of Associated Operators  4


Short name
  of the
  
  Indication
  
  
  
  Full name
  
  Symbol
  
  Numbering capacityOperator/
  Operators
  subsidiary
  
  of
  agreement
  conclusion
  
  Number
  of
  agreement
  
  of
  Associated
  Operator
  
  name of
  Associated
  Operator
  
  Beginning
  of number
  range
  
  End of
  number
  range
  
  Date of
  number
  opening
  
  Date of
  number
  closure1
  
  2
  
  3
  
  4
  
  5
  
  6
  
  7
  
  8
  
  9  Notes
to completion of Table 1:  1.The data must be presented by the
Operator in the Excel format.  2.The transferred files must be named in accordance with
the following name structure:  XXXXZZZZZZCCCNU.xls, where  XXXX- four-digit sign-digit operator number
assigned by Rostelecom ZZZZZZ  reporting period in the form YYYYMM CCC  code of the outgoing ABC (up to three
digits); N  indication of the information presented
in the file (must always be present in the file name) UU  ordinal number of the report. The
ordinal number of the document sent by the communication Operator to Rostelecom
in the reporting period is always 0. Every new version of the file for the same
Reporting period is formed by means of increasing the document ordinal number
by 1.  3.The Operator having subsidiaries draws up the report
on numbering capacities of the Associated Operators individually for every
subsidiary and submits the reports conjointly.  4.In
the column «Symbol name of Associated Operator» the abbreviated name of
Associated Operator is indicated.  5.In
the column «Indication of agreement conclusion» the following codes are
indicated dependent on the state of the agreement with the corresponding
Associated Operator: 0  agreement is not concluded; 1  agreement is
concluded; 2  agreement is denounced.  6.In
the column «Beginning of number range» and «End of number range»full numbersallotted to the operator together with the ABC code are indicated. By absence
of number range, i.e. when one number is allotted, the same number is indicated
in these columns.  7.In
the fields «Date» the date of opening or closure of number range is indicated,
in the format: (DD.MM.YYYY)  Table 2
.. The format of data presentation on Traffic admission Services  <
Name of Operator> <Name
of Operators subsidiary> Period
from <the starting date of the reporting period> till <the ending date
of the reporting period> Type
of traffic <incoming/ outgoing>  Direction name
  
  Code
  
  Number of calls
  
  Duration, min.
  
  Tariff
  
  CostTotal  Notes
to completion of Traffic admission Services data  1.The
data must be presented in the Excel format.  5


2.In
the field «Type of traffic» service type relative to the network of Rostelecom
is indicated: incoming  for initiation of call, outgoing  for termination of
call to the Operators network.  Rostelecom:
  
  Operator:General Director
  
  General DirectorOAO Rostelecom
  
  OJSC
  VolgaTelecomD.Ye. Yerokhin
  
  S.V. Omelchenko200
  
  200Seal
  here
  
  Seal
  here  »  10.Appendix No. 6 of the
Contract shall be amended as follows: Appendix No. 6 (version 2) to Contract as amended by Agreement No.1097-05 dated December 27, 2005  Interaction
between Rostelecom and the Operator in the Course of Reconciliation of Data on
Long-Distance and International Traffic Admission.  1.This Appendix establishes the list of actions that
must be performed by the Parties (Rostelecom and the Operator) for the
regulation of disputes arising by discrepancy of traffic admission data.  2.This Appendix establishes the methods of data
reconciliation on the admitted traffic, the format, the terms and ways of data
submission on every stage of reconciliation.  3.The performance of reconciliation can be initiated by
one of the Parties within the validity term of the current Agreement on the
condition of observance of statue of limitation established by current law of
the Russian Federation.  4.The basis for the beginning of the data reconciliation
actions is the discrepancy between summary volume or cost figures on the services
rendered during the Reporting period (in accordance with the data of Rostelecom
and the Operator), exceeding 3 (three) %.  5.The following actions can be performed in the
reconciliation:  ·The
reconciliation of data submitted by Rostelecom and the Operator, ·detailed
reconciliation ·comprehensive
technical study;  6.The reconciliation of data submitted by Rostelecom and
the Operator:  6.1.The Party initiating the reconciliation forms and
submits to the other Party the report in the form of Table 1 presented in this
Appendix.  6.2.The Party receiving the report indicated in para. 6.1,
performs counter-analysis of the execution of the conditions hereunder in the
billing:  ·minimum non-tariff
limit of the calls, ·type of the
traffic round-off, ·tariffs. ·criteria of
traffic accounting (switching, trunks, numbering capacity).  6


6.3.If as a result the Party has detected a mistake and
its correction has eliminated the discrepancies, the Parties agree on the date
of correction of the mistake and the date of re-calculation in accordance with
the conditions hereof.  6.4.If the mistake was not detected and its correction did
not effect the elimination of the discrepancies, the Party initiating the
reconciliation chooses the directions (no more than five (5)) for which the
maximal discrepancies were detected, the volumes must be sufficient for the
performance of reconciliation. The data shall be input into Table 2 attached
herein. The other Party, no later than within 5 (five) business days upon
receipt of the report draws up the Act on the results of the counter-analysis
and submits it to be approved by the cooperating Party.  7.Detailed reconciliation  7.1.The basis for the beginning of a detailed
reconciliation is the coordinated at the previous stage acts and reports on the
condition of absence of detected causes of discrepancies.  7.2.The Parties adjust the following parameters of the detailed
reconciliation:  ·time factors
(month, week, day, hour and so on), ·ancillary
parameters (switchboards, trunks, numbering capacity), ·aspect of the
detailed reconciliation, ·size of the
detailed reconciliation, ·data exchange
type.  The format sample for accordance of measured call
service data for a detailed reconciliation, indicated in Table 3 of the
Appendix, can be changed depending on technical abilities of the Parties.  7.3.Detailed reconciliation is conducted under the
agreement of the Parties using the resources of Rostelecom and/or Operator. The
results of the reconciliation, performed by Rostelecom, shall be sent to the
address of Operator not later than after seven (7) business days from
concordance of the operation factors, indicated in para. 7.2 hereof.  7.4.The parties conduct analysis of the results of the
detailed reconciliation.  If one of the Parties has detected a mistake and its
correction has eliminated the discrepancies, the Parties agree on the date of
correction of the mistake and the date of re-calculation in accordance with the
conditions hereof.  7.5.If no errors are detected or after correction of
errors discrepancies are not eliminated the results of the analysis shall be
revealed in relevant Act within three (3) business days from the date of
reconciliation agreed by the Parties. The Parties will co-ordinate the next
steps:  ·Another
addition, ancillary parameters of the revise are selected (repeated execution
of the stage of the detailed reconciliation), ·comprehensive
technical study should be performed.  8.Comprehensive technical study.  8.1.The reason for the realization of the comprehensive
technical study is coordinated on the previous stages statements and the
absence of the ascertained reasons for discrepancies.  8.2.In the context of the comprehensive technical study it
can be realized by the associated Parties:  ·verification of
capacity for work of communication channels; ·verification of
the recording completeness of the tariff files; ·verification of
recording conditions of the tariff files; ·registration of
the probing calls;  7


·verification of
the routing Regulations; ·verification of
the software, used in the system of collection and processing of tariff
information and so on; ·using indirect
methods of research.  8.3.After getting the results the report is organized and
agreed by the Parties, the used methods, conclusions, recommendations for
eliminating the reasons, caused the discrepancies, the terms of removal such
reasons are indicated inside this report.  On
the basis of the results of the complex technical analysis report, the decision
about re-calculation is taken in accordance with the conditions hereof.  Table
1.The form of data reconciliation report  OperatorDescription of communication services with
  discrepancies detectedDate and registration number of agreement/contract
  for the services renderedTerms of tariffing for the service (minimum
  non-payable threshold, round-up per second/per minute)Accounting criteria of the service - terms of
  connection (switching, trunks, numbering capacity)DiscrepanciesPeriod datesTraffic direction (incoming/outgoing/transit)Type of traffic
  (long-distance/international/local)Charges for traffic according to RostelecomCharges for traffic according to the OperatorDiscrepancies in chargesVolume of traffic according to RostelecomVolume of traffic according to the OperatorDiscrepancies between volumes  Table
2. Dedicated reconciliation form  Outgoing
  
  
  
  
  
  
  
  
  
  DiscrepanciesABC
  
  
  
  Direction
  
  Rostelecom data
  
  Operator data
  
  %
  
  %Period
  
  code
  
  Direction
  
  code
  
  min
  
  tariff
  
  total
  
  min
  
  tariff
  
  total
  
  (min)
  
  (roubles)  Table 3. Format of call service data  Data should be presented in
electronic file using format dbf or xls  Tel_A*
  
  Tel_B*
  
  Mn_I*
  
  Mn_O*
  
  Date*
  
  Time*
  
  D_sec*  
 * fill-in spaces are marked  1.Field Tel_A*:
Number of the subscriber A phone 2.Field Tel_B*:
Number of the subscriber B phone 3.Field Mn_I*:
Mnemonics of incoming group of channels  8


4.Field Mn_O*:
Mnemonics of outgoing group of channels 5.Field Date*:
Date of the call beginning (DDMMYY) 6.Field Time*:
Time of the call beginning (HHMMSS) 7.Field D_sec*:
Call duration (in seconds)  Rostelecom:
  
  Operator:General Director
  
  General DirectorOAO Rostelecom
  
  OJSC
  VolgaTelecomD.Ye. Yerokhin
  
  S.V. Omelchenko200
  
  200Seal
  here
  
  Seal
  here  »  11.This Agreement is an
integral part of the Contract.  12.All terms used in this
Agreement have a meaning, fixed for them in the Contract.  13.All the rest, not indicated
in this Agreement, is subject to the provisions of the Contract.  14.The agreement is issued in
the Russian language in two original counterparts, one for each Party.  15.This Agreement comes into
effect on the date of its execution. The Parties recognize that the terms and
conditions of their Agreement shall apply to their relationships arising as
from the date of the Contract on connection of telecommunication networks as
amended by Agreement No. 1097-05 dated December 27, 2005.  16.Details and Signatures of
the Parties  OAO Rostelecom:
  
  OJSC VolgaTelecomLegal
  address: 5, Delegatskaya st.,
  
  Legal
  address:Moscow,
  127091General Director
  
  General DirectorD.Ye. Yerokhin
  
  S.V. OmelchenkoDt.                                    2006
  
  Dt.                                    2006Seal
  here
  
  Seal
  here  9