Operating Manual 6172.5808.02 ā 01 5.121
M3SR Series 4100 SIP ā Useful Information for System Integration
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.
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