IPC Definitions - January 01, 2012
H04Q 3/00 - Definition
Attention is drawn to the following places, which may be of interest for search:
Intermediate storage means for telegraphic communication | H04L 13/08 |
Subscriber services provided at exchanges | H04M 3/42 |
Signaling arrangements | H04Q 1/30 |
In patent documents the following abbreviations are often used:
BCSM | Basic Call State Model |
SIBBS | Service-Independent Building Blocks |
PBX | Private Branch Exchange |