Letter No. Date Description Policy No. Hyp.No. No.2003/Tele/AR/5  03/02/2004 Provision of DTMF based calling system for Gate Communication RB Tele    2/2004 TC-02 No. 2000/Tele/WE 2/VR 18/12/2003 Provision of Voice Recorders in Control Offices. RB Tele  17/2003 TC-03 No. 2003/Tele/AR/7 26/06/2003 Provision of Control Phone (test) sockets in crew lobby. RB Tele    8/2003 TC-04 No.99/Tele/TN/6 01/05/2003 Provision of ISD facility on BSNL/MTNL telephone in Control offices. R B Tele   3/2003 TC-01 (DM-05) No.89/Safety-I/4/3 25/07/1997 Provision of BSNL/MTNL telephones with STD facilities in Control offices.   TC-05 No.73/W3/TN/8 27/09/1977 Provision of Portable Field telephones on EMUs  Suburban/Local Passenger Trains.   TC-06 No. 91/Tele/TN/14/RAEC 30/04/1991 Provision of Portable Field telephones for Goods trains hauled by Diesel Locos.-maintenance thereof   TC-07 No. 95/Elec(TRS)/138/1(79) 03/11/1997 25/2/1999 26/6/200 Provision of Portable telephones as part of crew equipment - Electric Loco   TC-08 No. 91/M(L)466/54 03/05/2001 15/5/2001 30/5/2001 Provision of Portable Field telephones for Goods trains hauled by Diesel Locos.   TC-09 No. 2000/Tele/WE/3/CTCSS Pt. 26/03/2004 Provision of Engineering Control. RB Tele    5/2004 TC-10 No. 82/W3/Tele/TN/10 21/04/2004 Standardization of Brake Van Equipment for coaching trains - Portable Control Telephones RB Tele    9/2004 TC-11