Call can cut after 30 secs if bad transport selected
If we see the following logs at the start of a call:
[1565812513.241| 1648|instant_messaging.cpp:184 ] pjsip_dlg_send_request failed: Unsuitable transport selected (PJSIP_ETPNOTSUITABLE)
The call will cut after 30 secs because the SIP message is not sent.
A bad ip is resolved in sip_resolve.c. Currently digging.