www.addpac.com
8
SIP Message Flow (Register)
RoIP System Message Flow
REGISTER
200 OK
All Participants register to IP-PBX for PTT service.
AP-PTS3000
PTT Server
AP-LMR2000
LMR Gateway
REGISTER
200 OK
REGISTER
200 OK
REGISTER
200 OK
IP-PBXPTT IP Phone PTT IP Phone
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