500 error of SBC for INVITE
Hi everyone
SBC receives INVITE message from IBCF and SBC gives 500 error message.
Below is the INVITE message.
Please let me know if there is any cause of 500 error.
SBC <----(INVITE)-------- VoIP IBCF
------(500 error)----->
=================================================
SIP INVITE Message
Session Initiation Protocol (INVITE)
Request-Line: INVITE sip:calling-number@IBCF-Server-IP:5060;user=phone SIP/2.0
Message Header
Via: SIP/2.0/UDP IBCF-Server-IP:5060;branch=z9hG4bKnz69608c333bb001c50
Via: SIP/2.0/UDP y.y.y.y;branch=z9hG4bKBroadWorks.2qih2f-125.144.60.22V5060-0-703975414-1455853647-1603430752234-
Record-Route: <sip:gr-voip-ibcf@125.144.60.22:5060;lr>
Max-Forwards: 69
To: <sip:calling-number@IBCF-Server-IP;user=phone>
From: <sip:called-number@cta.kt070.co.kr;user=phone>;tag=1455853647-1603430752234-