Document:

EXHIBIT 4.5

Table of Contents

Exhibit 4.5 

4o AMENDMENT TO AGREEMENT AMONG TNL 

PCS S/A, TELEMAR NORTE LESTE S/A, TELEMAR 

INTERNET LTDA AND TNL CONTAX S/A. 

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”; 

TNL PCS S/A, a corporation with registered offices at Rua Jangandeiros, no 48 – Ipanema, Zip Code: 22420-020, in the city of Rio de Janeiro, State of Rio de Janeiro, enrolled with the Finance Ministry under CNPJ number
04.164.616/0001 -59, represented as per its by-laws, hereinafter referred to as “OI”, and 

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, and 

TELEMAR INTERNET LTDA, a corporation with registered offices at Avenida Afonso Penna, no 4001, in the city of Belo Horizonte, State of Minas Gerais, enrolled with the Financial Ministry under CNPJ number 03.986.348/0001 -98, represented
as per its by-laws, hereinafter referred to as OI INTERNET. 

all companies collectively referred to as “CONTRACTORS”; 

and:

TNL CONTAX S/A, a corporation with registered offices at Rua da Passeio, no 48 ao 56, Zip Code: 20021-290, 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,
represented as per its by-laws, hereinafter referred to as “CONTRACTED PARTY”, 

all hereinafter collectively referred to as “PARTIES” and separately as “PARTY”. 

WHEREAS the PARTIES entered into a Service Agreement dated November 30, 2004, hereinafter referred to as AGREEMENT, and now wish to modify certain sections and conditions, in the light of changes in, and additions to, services during the term of the
Agreement. 

WHEREAS the CONTRACTED PARTY is fully aware that the communications service provided by the CONTRACTOR under ANATEL’s concession is a public service of collective interest and that the subject matter of this Agreement is indispensible for the
continuing provision of public services by the CONTRACTOR. 

The PARTIES decide to enter into the present amendment to the AGREEMENT, which shall be governed by the following additional sections and conditions: 

SECTION ONE – CHANGES TO THE AGREEMENT 

1.1 The subject matter of this amendment includes the following: 

a) Alterations in the unitary values that where adjusted in May of 2007, as provided on clause 8.6 of the contract, whereas the PARTIES agree on applying the readjustment of 3.0% (three percent). 

Table of Contents

b) The PARTIES agree to use as a base-date January 2008 as opposed to November 2007, for the withdrawal of the discount, as provided on the AGREEMENT, due to the usage of partially depreciated call center assets, acquired by the CONTRACTED PARTY.

c) The partial replacement of Annex 1 – Description and General Conditions of Services Rendered, and consequently, the updating of services set forth therein, and the effects of this instrument are retroactive to the date of commencement of the
provision of each service and corresponding invoices. The present substitution comprises in updating the following services: 2. Operational Services – SOPE; 18. Back-Office Services – Geo-Information; 22. Maintenance and Administration of
Terminals (MAT); 23. Registration of Facilities and Designations (FAC); 25. Returned Accounts; 28. Back-Office Legal Department Services; 29. National Center of Networks – CNR, and the inclusion of; 30. Back-Office Procon (Programa de Orientação e Proteção ao Consumidor) Services.

SECTION TWO – FINAL PROVISIONS 

2.1 The sections, items and sub-items included in the Original Agreement which are not changed by this Amendment remain unaltered and in full force and are ratified for all legal purposes. 

In witness whereof, the parties signed this instrument in two (2) counterparts of equal contents and form, in the presence of the witnesses below. 

Rio de Janeiro, April 28, 2008 

By CONTRACTORS 

			
	 		 
	Jose Luis Magalhães Salazar 	 	Eduardo Michalski 
	Chief Financial Officer 	 	Chief Supply Officer 
	 
	By CONTRACTED PARTY 	 	 
	 	 	 
	 		 
	Rosangela Maria de Oliveira Lutti 	 	Michel Neves Sarkis 
	Human Resources Officer 	 	Chief Financial Officer 
	 
	WITNESSES 	 	 
	 	 	 
	 		 
	Carla Cristina Carvalho Gomes 	 	Sílvio César de Oliveira 
	CPF/MF: 018.604.467-44 	 	CPF/MF: 004.886.447-12EXHIBIT 4.6

Table of Contents

Exhibit 4.6 

5o AMENDMENT TO AGREEMENT AMONG TNL 

PCS S/A, TELEMAR NORTE LESTE S/A, TELEMAR 

INTERNET LTDA AND TNL CONTAX S/A. 

THE PARTIES 

TNL PCS S/A, a corporation with registered offices at Rua Jangandeiros, no 48 – Ipanema, Zip Code: 22420-020, in the city of Rio de Janeiro, State of Rio de Janeiro, enrolled with the Finance Ministry under CNPJ number
04.164.616/0001 -59, represented as per its by-laws, hereinafter referred to as “OI”, 

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, and 

TELEMAR INTERNET LTDA, a corporation with registered offices at Avenida Afonso Penna, no 4001, in the city of Belo Horizonte, State of Minas Gerais, enrolled with the Financial Ministry under CNPJ number 03.986.348/0001 -98, represented
as per its by-laws, hereinafter referred to as OI INTERNET. 

all companies collectively referred to as “CONTRACTORS”; 

and:

TNL CONTAX S/A, a corporation with registered offices at Rua da Passeio, no 48 ao 56, Zip Code: 20021-290, 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,
represented as per its by-laws, hereinafter referred to as CONTRACTED PARTY, 

all hereinafter collectively referred to as “PARTIES” and separately as “PARTY”. 

WHEREAS the PARTIES entered into a Service Agreement dated November 30, 2004, hereinafter referred to as AGREEMENT, and now wish to modify certain sections and conditions, in the light of changes in, and additions to, services during the term of the
Agreement. 

WHEREAS the CONTRACTED PARTY is fully aware that the communications service provided by the CONTRACTOR under ANATEL’s concession is a public service of collective interest and that the subject matter of this Agreement is indispensible for the
continuing provision of public services by the CONTRACTOR. 

The PARTIES decide to enter into the present amendment to the AGREEMENT, which shall be governed by the following additional sections and conditions: 

SECTION ONE – CHANGES TO THE AGREEMENT 

1.1 The subject matter of this amendment includes the following: 

a) Alterations in the unitary values that where adjusted in May of 2008, as provided on clause 8.6 of the contract, whereas the PARTIES agree on applying the following readjustments:

i. 8.7% (eight point seven percent) for the Operations Oi (excluding Debt Collection, URC Varejo, Discount Campaigns and Escob) and OI Paggo; 

ii. 7.84% (seven point eighty-four percent) for the operations URC Varejo and Discount Campaigns. 

b) The
replacement of Annex 1 – Description and General Conditions of Services Rendered, and consequently, the updating of services set forth therein, and the effects of this instrument are retroactive to the date of commencement of the provision of
each service and corresponding invoices. 

Table of Contents

SECTION TWO – FINAL PROVISIONS 

2.1 The sections, items and sub-items included in the Original Agreement which are not changed by this Amendment remain unaltered and in full force and are ratified for all legal purposes. 

In witness whereof, the parties signed this instrument in two (2) counterparts of equal contents and form, in the presence of the witnesses below. 

Rio de Janeiro, September 4, 2008 

By CONTRACTORS 

			
	 		 
	Jose Luis Magalhães Salazar 	 	Eduardo Michalski 
	Chief Financial Officer 	 	Chief Supply Officer 
	 
	By CONTRACTED PARTY 	 	 
	 	 	 
	 		 
	Rosangela Maria de Oliveira Lutti 	 	Michel Neves Sarkis 
	Human Resources Officer 	 	Chief Financial Officer 
	 
	WITNESSES 	 	 
	 	 	 
	 		 
	Carla Cristina Carvalho Gomes 	 	Sílvio César de Oliveira 
	CPF/MF: 018.604.467-44 	 	CPF/MF: 004.886.447-12EXHIBIT 4.15

Table of Contents

Exhibit 4.15 

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: 

a. OBLIGATIONS OF CONDUCT – The relationship between the Parties for the Agreement signed between them as well as for the services which shall be provided, are based on the principles of good faith, probity, trust and loyalty, each Party
abstaining from acting in any way that could cause damages to the other. 

 i. Whatever the cause of dissolution of the Agreement between the Parties, the Parties are still obliged to respect the obligations of conduct mentioned above, being
responsible for their actions as well as the actions of their employees, agents and representatives. 

ii. The payment of compensation does not release the Parties or their employees, agents and representatives, from obliging, as appropriate, to the
obligations of conduct mentioned above. 

b. CODE OF ETHICS – The Contractor’s Code of Ethics details the ethical principles and the guidelines that its executives and employees must follow. 

i.  The Contractor has the conviction that its suppliers also believe on the importance of
social and business responsibility, guided by ethics and legitimacy, in order to ensure the healthy development of their relationship. Therefore, accepting to supply products, materials or services to the Contractor, presupposes the adherence to the
referred Code of Ethics, especially in the matter relating to the relationship between the Contactor and its suppliers. The Contractor’s Code of Ethics is available at www.itau.com.br. 

ii.  In case of adjustments made to the Code of Ethics, without prior notification from the Contractor, the Code of Ethics that shall be considered valid is the one in effect when this amendment was signed. The Contractor cannot insert into the Code of Ethics any guideline that can cause obligation or burden in the serviced provided by the
Contracted Party, without the prior knowledge of the latter.

2. Include, on the fifth (5th) clause of the contract, the following obligations to the Contracted Party: 

a. Additionally to the obligations established under the fifth clause, the Contracted Party must oblige to: 

i. Observe the provisions set forth by the Collective Labor Agreements concluded between the Contracted Party and the Labor Syndicate that
represents the personnel hires to provide the services, given that the price readjustments to the agreement now being amended will be done by prior negotiations between the Parties, in accordance to the readjustment formulas established in the
agreement; 

ii. Observe, during the term of the Agreement, all federal, state, local and condominium laws, being responsible to any infractions that it may cause;

Table of Contents

iii. Meet all standards regarding environmental protection and social interest, especially those that deal with: 

a) National Policy on the Environment; 

b) Emission control and proper disposal of pollutants, products and harmful materials; 

c)
Acquisition, transportation, stock and usage of controlled products; 

d) Usage and exploration of natural resources; 

e) Transportation and discard of residues; 

f) Purchase and usage of wood, raw materials and products of plant or animal origin with
Certificate of Origin issued by especial governing bodies competent for this purpose; 

g) Child Labor protection; 

h) Forced Labor or Slave Labor. 

iv. Communicate to the Contractor Party any occurrences regarding notifications or inquiries received
from government agencies may they be federal, state, local and municipal, or NGOs, individuals or others, that questions possible irregularities in any matters discussed on the above subparagraph, as well as, any labor related accident or incident
involving any of its employees during the exercise of its functions, whether or not in activities performed for the Contractor. 

v. Display whenever required and renew during the course of the contract, licenses and permits required for the exercise
of business activity, environment protection and social interest. 

The amendment enters into force on the date of signature. 

The CONTRACTOR and the CONTRACTED PARTY agree that all other clauses and conditions of the agreement not expressly amended by this instrument hereby remains in effect.

The amendment is signed in two copies. 

São Paulo, September 11, 2007. 

			
	 By CONTRACTORS 
	 	 
	 	 	 
	 		 
	 	 	 
	 	 	 
	ORBITALL SERVIÇOS E PROCESSAMENTO 	 	 
	DE INFORAÇÕES COMERCIAIS LTDA. 	 	 
	 
	 
	By CONTRACTED PARTY 	 	 
	 	 	 
	 		 
	 	 	 
	TNL CONTAX S.A. 	 	 
	 
	 
	WITNESSES 	 	 
	 	 	 
	 		 
	 	 	 
	Name: 	 	Name: 
	CPF/ME: 	 	CPF/ME:

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00160-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00160-of-00352.parquet"}], [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00160-of-00352.parquet"}]]