from 20-F 14 pages Contax Participações S.A. Corporate Taxpayer’s Id (Cnpj) 04.032.433/0001-80 Corporate Registry Id (Nire) 33300275410 Publicly-Held Company Bylaws Chapter I Name, Head Office, Purpose and Duration Chapter II Capital Stock and Shares

from 20-F 2 pages The Parties Telemar Norte Leste S/A, a Corporation With Registered Offices at Rua General Polidoro, Nº99, in the City of Rio De Janeiro, State of Rio De Janeiro, Enrolled With the Financial Ministry Under Cnpj Number 33.000.118/0001 -59, Represented as Per Its By-Laws, Hereinafter Referred to as “Telemar”;

from 20-F 2 pages The Parties

from 20-F 2 pages Amendment to the Contact Center Service Agreement, Identified as Cn 0988/04 the Parties Contractor: Orbitall Serviços E Processamento De Informações Comerciais S.A., a Corporation With Registered Offices at Rua Manoel Coelho, Nº 600 – 1º Piso, in the City of São Caetano Do Sul, State of São Paulo, Enrolled With the Financial Ministry Under Cnpj Number 00.006.878/0001-34. Contracted Party: Tnl Contax S/A, a Corporation With Registered Offices at Rua Da Passeio, Nº 48 Ao 56 - Parte, Downtown, in the City of Rio De Janeiro, State of Rio De Janeiro, Enrolled With the Finance Ministry Under Cnpj Number 02.757.614/0001 -48. the Parties Adjust the Following Amendments to the Above Mentioned Agreement: 1. the Clauses “Obligations of Conduct” and “Code of Ethics”, as Described Below, Are Now Amended to the Contract

from 20-F 2 pages Amendment to the Contact Center Service Agreement, Identified as Cn 0988/04 1. the Parties Contractor: Orbitall Serviços E Processamento De Informações Comerciais S.A., a Corporation With Registered Offices at Rua Manoel Coelho, Nº 600 – 1º Piso, in the City of São Caetano Do Sul, State of São Paulo, Enrolled With the Financial Ministry Under Cnpj Number 00.006.878/0001 -34. Contracted Party: Tnl Contax S/A, a Corporation With Registered Offices at Rua Da Passeio, Nº 48 Ao 56 - Parte, Downtown, in the City of Rio De Janeiro, State of Rio De Janeiro, Enrolled With the Finance Ministry Under Cnpj Number 02.757.614/0001 -48. 2. the Parties Adjust the Following Amendments to the Above Mentioned Agreement: A. Orbitall May Locate Representatives in Contax’s Office Space, Only in the Areas Directly Related to the Provision of Services, Considering the Following Purposes

from 20-F 2 pages Amendment to the Contact Center Service Agreement, Identified as Cn 0988/04 1. the Parties Contractor: Orbitall Serviços E Processamento De Informações Comerciais S.A., a Corporation With Registered Offices at Rua Manoel Coelho, Nº 600 – 1º Piso, in the City of São Caetano Do Sul, State of São Paulo, Enrolled With the Financial Ministry Under Cnpj Number 00.006.878/0001-34. Contracted Party: Tnl Contax S/A, a Corporation With Registered Offices at Rua Da Passeio, Nº 48 Ao 56 - Parte, Downtown, in the City of Rio De Janeiro, State of Rio De Janeiro, Enrolled With the Finance Ministry Under Cnpj Number 02.757.614/0001 -48. 2. the Parties Adjust the Following Amendments to the Above Mentioned Agreement: A. Price Readjustment: I. Readjustment of 4.14% Starting on January 1, 2007, to Be Applied on Prices Practiced Until December 31, 2006; II. Readjustment of 5.29% Starting on January 1, 2008, to Be Applied on Prices Practiced Until December 31, 2007;

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