I’m facing an issue for the first time. I have a SIP trunk that is successfully registered with the provider. I’m able to do outgoing calls. Incoming calls are not working. Our SIP provider is giving us the below trace:
U 2017/06/15 11:18:04.732776 188.8.131.52:5060 -> OUR_IP:5060
SIP/2.0 404 Not Found.
Via: SIP/2.0/UDP ISP_IP;branch=z9hG4bKa042.dc260921.0;received=ISP_IP.
From: “011441143199998” sip:email@example.com;tag=763e951e2e9380172eea6cad52226b3c.
CSeq: 108426679 INVITE.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE.
Supported: replaces, timer.