Hi,
I use HMP 3.0 update 310 on Windows 2003 Server. And I connected HMP to HuaWei Gateway with SIP protocol. When I call out from HMP, the flow as follow, the 192.168.1.81 is HMP server and the 192.168.1.100 is gateway.
In line 7, HMP send 488 to gateway when it received re-INVITE message.
I find the answer in document "GlobalCall For IP HMP V10" (section 4.7).
I add codes as follow to my application:
But I can't receive GCEV_REQ_MODIFY_CALL message or GCEV_REQ_MODIFY_UNSUPPORTED message from HMP.
The HMP Log is :