IPC Definitions - January 01, 2012

H04Q 3/00 - Definition fr

Informative references

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

Synonyms and Keywords

In patent documents the following abbreviations are often used:

BCSM

Basic Call State Model

SIBBS

Service-Independent Building Blocks

PBX

Private Branch Exchange