I'm having a problem getting Mitel's Border Gateway (formerly known as Teleworker) working properly. For those not in the know... Mitel is a large VOIP phone system company and they have various addons, including a server which would typically sit in your DMZ and allow remote workers to have a handset in their home / remote location as if they were in the office. The server has an private (RFC1918 IP Address) and the firewall NATs a public IP to the server, just as many other setups would work.
The phone in the remote location is configured to communicate with the public IP of the Teleworker server which in turn translates to the Teleworker server which then makes contact with the internal VOIP devices as necessary. No special programming is required on the remote users router. It's designed (sadly!) so that all the hard work is done at the company firewall...
The problem I have is that when the remote user calls an internal number, there is two way audio. When the intenal extension calls the remote user, there is one way audio - the remote person can't hear the audio.
As much as I'd like to blame Mitel and the telephony engineers, when we had it working behind a Check Point (sorry for swearing) firewall, it was fine. Behind the Palo, I'm getting the above mentioned grief.
Does anyone have any experience with getting this working!
I know this is a very old thread but we have just implemented Palo Alto to replace a Juniper and are having what appears to be exactly the same issue as you with Mitel Teleworker.
Worked absolutely fine with the Juniper but getting one way voice with the Palo Alto when initiating the call from an internal Mitel set or dialling in from the PSTN. We rely on Teleworker to such an extent that we have had to roll back to the Juniper.
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