Freesbc and CUCM

[freedomhtx]

Hi there, I am having an issue making and receiving calls through my Callmanager. Has anyone successfully setup this SBC with callmanager? Im trying to set this up in a lab environment. The SBC will successfully make a call through the trunk to the SIP provider but I cannot make or receive a call through my CUCM. Plz help.

[Admin]

Hi

Would you check if CUCM sending the calls to the correct NAP port which you configured under the NAP, please? You can use tbsigtrace capture and make a test call and analyze the signaling trace. You can find more details about tbsigtrace in the following link;
https://docs.telcobridges.com/tbwiki/Toolpack_Debug_Application:Tbsigtrace

[freedomhtx]

Hi there, yes the trunk on the CUCM is set to connect to the LAN port of the SBC. I was able to get a trunk connected to asterisk before but im not sure if im missing a setting in SBC for registration.

[freedomhtx]

Ok so an update, I was able to get the outgoing calls to work between the sbc anc CUCM however I am unable to get the incoming calls from twilio to connect to the SBC. This is the error that I am getting from twilio. "Request timeout with sip:+17138448443@external-ip"

[Admin]

Hi
Please use tbsigtrace tool to collect signaling capture and check with Wireshark if you are sending/receiving the correct packets.

https://docs.telcobridges.com/tbwiki/Toolpack_Debug_Application:Tbsigtrace

If you still cannot address the problem please contact us at support@telcobridges.com