ATM | Asynchronous Transfer Mode |
CLI | Calling Line Identification |
CPP | Calling Party Pays |
IN | Intelligent Network |
INET | Indian Packet Switched Network |
ISD | International Subscriber Dialling |
ISDN | Integrated Services Digital Network |
ISP | Internet Service Provider |
LDCA | Long Distance Charging Area (Usually a revenue District) |
POTS | Plain Old Telephone Service |
PSDN | Public Switched Data Network |
PSTN | Public Switched Telephone Network |
SDCA | Short Distance Charging Area (Usually a Taluka) |
SSA | Secondary Switching Area (Usually a revenue District) |
STD | Subscriber Trunk Dialling |