I’ve been developing iOS VOIP application. When I calling from one device to multiple devices and one device accept the call. Then this device (which accepted call) send to others this message:
Via: SIP/2.0/UDP 10.0.32.139:5062;rport;branch=z9hG4bK816857796
CSeq: 20 CANCEL
User-Agent: 2N Helios IP Safety 220.127.116.11.2
Reason: SIP;cause=200;text="Call completed elsewhere"
Important me is this reason: Call completed elsewhere. I properly get notification about call and, and reason is LinphoneReasonNotAnswered. But I need know if call is completed somewhere else or not.
Many thanks for your help.