AGREEMENT OF JOINT FILING

EXHIBIT 99.1

CUSIP NO. 000000000

AGREEMENT OF JOINT FILING

The undersigned hereby agree that they are filing jointly pursuant to Rule 13d-1(k)(1) of the Securities and Exchange Act of 1934, as amended, with respect to the American Depositary Shares, each representing 5,000 Preferred Shares, of Brasil Telecom Participações S.A.   Each of the undersigned further agrees and acknowledges that it shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning it contained herein, but shall not be responsible for completeness and accuracy of the information concerning the other, except to the extent that it knows or has reason to believe that such information is inaccurate.

DATED: January 15, 2008	REPORTING PERSON:
	Cyrte Investments B.V.
	/s/ Xxxxxxx Macnack
	By: Xxxxxxx Macnack, attorney-in-fact*
	Cyrte Investments GP III B.V.
	/s/ Xxxxxxx Macnack
	By: Xxxxxxx Macnack, attorney-in-fact*
	Cyrte Fund III C.V.
	/s/ Xxxxxxx Macnack
	By: Xxxxxxx Macnack, attorney-in-fact*
	Aviva plc
	/s/ Xxxxxxxxxx Xxxxxxxx
	By: Xxxxxxxxxx Xxxxxxxx, attorney-in-fact**
	Aviva Group Holdings Limited
	/s/ Xxxxxxxxxx Xxxxxxxx
	By: Xxxxxxxxxx Xxxxxxxx, attorney-in-fact**
	Aviva International Insurance Limited
	/s/ Xxxxxxxxxx Xxxxxxxx
	By: Xxxxxxxxxx Xxxxxxxx, attorney-in-fact**
	Aviva Insurance Limited
	/s/ Xxxxxxxxxx Xxxxxxxx
	By: Xxxxxxxxxx Xxxxxxxx, attorney-in-fact**
	Aviva International Holdings Limited
	/s/ Xxxxxxxxxx Xxxxxxxx
	By: Xxxxxxxxxx Xxxxxxxx, attorney-in-fact**
	CGU International Holdings B.V.
	/s/ Xxxxxxxxxx Xxxxxxxx
	By: Xxxxxxxxxx Xxxxxxxx, attorney-in-fact**
	Delta Xxxxx N.V.
	/s/ Xxxx Xxxxxxx
	By: Xxxx Xxxxxxx, attorney-in-fact**

* Signed pursuant to powers of attorney, December 19, 2007, included as Exhibit 99.2.

** Signed pursuant to powers of attorney, dated January 15, 2008, included as Exhibit 99.3.