Bharat Sanchar Nigam Limited (Madhya Pradesh) O/o CGMT BSNL M.P Circle Hoshangabad Road Bhopal (M.P).
Bharat Sanchar Nigam Limited (Chennai) O/o CGM, BSNL CHTD, No.78, Purasaiwakkam High Road, Chennai-600010.
Bharat Sanchar Nigam Limited (Kolkata) Telephone Kendra (TBZ), 10th Floor,P-10, New CIT Road , Kolkata- 700073
Bharat Sanchar Nigam Limited (Kolkata) Satyabala Telephone Exchange, 200/201, GT Road (N) Howrah-711107
