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
Bharat Sanchar Nigam Limited (Bihar) O/o CGMT, JKD, Room No. A204,ARTTC Building Near Jumar River Ranchi.
Bharat Sanchar Nigam Limited (J&K ) GM CFA, O/o CGMT , J&K Circle , BSNL Telephone exchange building , bahu plaza , adjacent to RBI ,Railway road , Jammu , J&K .
Bharat Sanchar Nigam Limited (Himachal Pradesh) O/o CGMT HPT Circle SDA Complex, Block No. 11,Shimla-09
