The office of Joint CCA Assam Circle was created in October 2001 after the formation of Bharat Sanchar Nigam Limited. Subsequently it has been upgraded to the office of CCA in 2007-2008. Now the CCA has been declared as Head of the Department and has been entrusted with many important functions.

The role of the office of is multidimensional. Firstly, Terminal benefits of all DoT and BSNL employees are handled by the CCA office. Even during service period, General Provident Fund (GPF) Accounts of all government and erstwhile government employees, who opted for BSNL are managed by CCA. CCA Assam deals with more than 5,356 serving employees of BSNL and DoT. As on 31^st March 2009 total pension cases handled by this office were 3,664.

As a field unit of DoT, CCA performs the job of realization of License fee and Spectrum charges. It also verifies the claim of deduction by the service providers. In 2008-09 the work of AGR verifications for the Internet Service providers with and without Telephony has also been entrusted with this office.

The Office of CCA Assam plays a significant role in development of Rural India by carrying out the important task of Universal Service Obligation Funds distribution. The Controller of Communication Accounts, Assam is responsible for: 1)Verification of the claims and release of payments. 2) Inspection and monitoring, for establishing the veracity of claims. 3) Proper accounting of all transactions relating to the USF Fund.

The Service Providers for Assam Service Area is only Bharat Sanchar Nigam Limited (BSNL), Assam Telecom Circle for Rural Telephones and VPT. However the scheme of Mobile Infrastructure Sharing in Rural Assam involves three more operators.