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CERTIFICATION PURSUANT TO
SECTION 302 OF THE SARBANES-OXLEY
ACT OF 2002

Certification of
Humberto José Rocha Braz, Chief Executive Officer

I,
Humberto José Rocha Braz, certify that:

|1. |  | I
  have reviewed this annual report on Form 20-F of Brasil Telecom Participações
  S.A.
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|2. |  | Based
  on my  knowledge,  this report does not contain any untrue  statement  of a material
   fact or omit to state a material  fact      necessary to make the statements  made, in
  light of the  circumstances  under which such statements were made, not misleading with
     respect to the period covered by this report;
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|3. |  | Based
  on my knowledge,  the financial  statements,  and other financial information included in
  this report, fairly present in all      material  respects  the  financial  condition,
   results of  operations  and cash flows of the company as of, and for,  the periods
     presented in this report;
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|4. |  | The
  company's  other  certifying  officer(s) and I are  responsible  for  establishing
      and maintaining disclosure controls and procedures (as defined in Exchange
    Act Rules 13a-15(e) and 15d-15(e)) for the company and have:
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| | (i) |  | Designed
  such disclosure  controls and procedures,  or caused such disclosure controls and
  procedures to be designed under our          supervision,  to ensure that material
  information relating to the company,  including its consolidated  subsidiaries,  is made
           known to us by others within those entities, particularly during the period in
  which this report is being prepared;
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| | (ii) |  | Evaluated the
  effectiveness of the company's  disclosure  controls and procedures and presented in this
  report our conclusions          about the  effectiveness of the disclosure  controls and
  procedures,  as of the end of the period covered by this report based          on such
  evaluation; and
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| | (iii) |  | Disclosed
  in this report any change in the company's  internal control over financial  reporting
  that occurred during          the period  covered by the annual report that has
   materially  affected,  or is reasonably  likely to materially  affect,  the
         company's internal control over financial reporting; and
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|5. |  | The
  company's other  certifying  officer(s) and I have  disclosed,  based on our most recent
   evaluation of internal  control over      financial reporting,  to the company's
  auditors and the audit committee of the company's board of directors (or persons
  performing      the equivalent functions):
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| | (i) |  | All
  significant  deficiencies and material  weaknesses in the design or operation of internal
  control over financial reporting          which are reasonably  likely to adversely
   affect the company's  ability to record,  process,  summarize and report  financial
         information; and
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| | (ii) |  | Any
  fraud,  whether or not material,  that involves management or other employees who have a
  significant role in the company's          internal control over financial reporting.
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| |  |  | Dated:  June 23, 2004
| |  |  | ---------------------

| | /s/ Humberto José Rocha Braz
Humberto José Rocha Braz
Chief Executive Officer
Brasil Telecom Participações S.A.
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