law: Telecom Regulatory Authority of India Act,1997
  17. Right to legal representation
  The applicant or appellant may either appear in person or 
  
  authorize one or more chartered accountants or company secretaries or cost 
  
  accountants or legal practitioners or any of its officers to present his or its 
  
  case before the Appellate Tribunal.
  Explanation: For the purposes of this section, -
  (a) "chartered accountant" means a chartered accountant as 
  
  defined in clause (b) of sub-section (1) of section 2 of the Chartered 
  
  Accountants Act, 1949 (38 of 1949) of and who has obtained a certificate of 
  
  practice under sub-section (1) of section 6 of that Act;
  (b) "company secretary" means a company secretary as defined in 
  
  clause (c) of sub-section (1) of section 2 of the Companies Secretaries Act, 
  
  1980 (56 of 1980) and who has obtained a certificate of practice under 
  
  sub-section (1) of section 6 of that Act;
  (c) "cost accountant" means a cost accountant as defined in 
  
  clause (b) of sub-section (1) of section 2 of the Cost and Works Accountants 
  
  Act, 1959 (23 of 1959) and who has obtained a certificate of practice under 
  
  sub-section (1) of section 6 of that Act;
  (d) "legal practitioner" means an advocate, vakil or an attorney 
  
  of any High Court, and includes a pleader in practice.