I see two recent calls from FreeSWITCH that end at 15 minutes:
billsec: 904.1, hangup cause: MANDATORY_IE_MISSING
billsec: 901.3, hangup cause: MANDATORY_IE_MISSING
My system is hanging up the call.
Is there some sort of SIP timer? I don't have a SIP trace to see what happened.
The remote carrier said:
>However I'm unsure of what the issue is you are reporting as the BYE simply came from your side?
>This is not something we are familiar with or why your server did or requires this.>
Reason: SIP;cause=488;text="No answer to offer".