M3SR Series 4100
Figure 5.35 SIP and Proprietary Signalling (ACCEPT, Gateway Radio)
Figure 5.35: An external VoIP user calls the radio network; the VoIP gateway radio accepts
the incoming call (automatic call accept delay timer expires) and, eventually, the call session
is successfully established and, at last, a radio terminates the call session.
Operating Manual 6172.5808.02 – 01
SIP Proxy
Gateway Radio
both way
RTP media
SIP Signalling
SIP – Useful Information for System Integration
Endpoint Radios
Accept Delay
Broadcast
Proprietary Signalling
ICN-4G-N-231054-R-D0894-00008-A-01-1
5.121