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Mitel MiVoice Business/MCD/3300 / Call forwarding no audio either direction
« on: September 06, 2021, 04:20:31 PM »
I have an issue with call forwarding, if anyone else has had similar issues, suggestions for a fix, or any ideas I would be grateful.
Our MBG is in DMZ mode, our PBX is a 3300 on the internal LAN.
Calls are OK incoming and outgoing
However call forwarding fails
E.G. If I forward my DDI to my mobile, then ring my DDI from an external number, the call is transferred to my mobile. However when I answer there is no audio either side.
I understand this type of issue with no audio could be the result of NAT. We have a Palo Alto firewall. All firewall rules have been created as per BT guidelines for their SIP trunks with SIP ALG disabled.
Any assistance appreciated.
Thanks
Our MBG is in DMZ mode, our PBX is a 3300 on the internal LAN.
Calls are OK incoming and outgoing
However call forwarding fails
E.G. If I forward my DDI to my mobile, then ring my DDI from an external number, the call is transferred to my mobile. However when I answer there is no audio either side.
I understand this type of issue with no audio could be the result of NAT. We have a Palo Alto firewall. All firewall rules have been created as per BT guidelines for their SIP trunks with SIP ALG disabled.
Any assistance appreciated.
Thanks