CUCM Incoming SIP Invite - 404 not found

[jrdiaz]

Hello Experts,

Would like to ask your expertise on CUCM Telco SIP integration (w/o CUBE). Currently we are experiencing issue on incoming calls which is working previously. Upon comparing SIP debug of the working and not-working I noticed the change on the current SIP invite.

Working
INVITE sip:5540@<Call Manger IP> SIP/2.0

Not Working
INVITE sip:5540@<Public IP>:5060 SIP/2.0

As can you see the domain part of the invite changes that result the CUCM to send SIP 404 not found error. My question is there a way that the CUCM would accept the SIP Invite.

Also I believe the client recently change their Public IP. What specific configuration on the firewall (Fortigate) can I tell the client to check.

Thank you in advance for your assistance!

[Mohammed al Baqari]

Hi, ask them to disable sip inspection in the firewall and it should work.
SIP inspection will replace cucm uri with firewall uri.

There is an option in cucm to fix it but imposes significant security risk

[jrdiaz]

Hello Mohammed

Thank you for your time. Will inform the client to check this configuration on their firewall. Also may we know what option on CUCM?

JP