IPC Definitions - January 01, 2012
H04W 4/16 - Definition
This group covers:
Special treatment of communication when parties are unreachable, unavailable or busy, e.g. call back.
Redirecting communication for a specified user or terminal to another destination, e.g. call blocking.
Attention is drawn to the following places, which may be of interest for search:
Systems providing special services or facilities to subscribers | H04M 3/42 |