![]() The SIP side then transmits a 200 OK message and the call gets connected. ![]() The SIP side then responds with a 180 ringing. The IMG 2020 receives the IAM and transmits the INVITE message to SIP side. Reason: Q.850 cause=17 text="User busy"Ĭontent-Length: 0 CASE #3 - Cause Number 16 (BYE message)Ī call is generated from the SS7 to SIP. Call-ID: 1c214262d2299f3cZjIzZDY3ZjU4ODA3NmRhODdmNGI4Y2M0NGRmNTYyMTY.
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