Anyone have any issues with UCM Remote Connect not working behind a SonicWall router?
I have a new system install and the 3rd party IT Router not allow remote phones to work, they register but the call signaling doesnt seem to be getting through.
UCM Remote Connect Test shows, STUN and TURN failing.
IT company says they are not blocking anything, I have advised to turn off SIP ALG and any VOIP Modifiers, still same issue.
Also this system was all setup in house and remote phones working even behind a double NAT test bench.
Has anyone seen this before and know what to change in the SonicWall?