IP Office and remote IP telephone

[FabFab]

I have an IP Office 406 R2 behind a microsoft ISA firewall. I'd like to setup some IP phones outside my corporate network and let them register in my IP office sistem. I've tried to publish some ports (1719-1720 UDP and TCP plus 49152 to 53300 UDP) but i can register in my system. Does anyone have an idea?

thanks in advance

 

[janni78]

You should use a VPN connection for this.

But if you want to open your firewall to the IPO you must put a public IP on the IPO or portforward those ports to the IPO.

 

[FabFab]

I have a couple of offices connected through VPN but can't do it with IP phones. Forwarding those ports is what i'm trying to do without success.

 

[janni78]

Think the IPO will think the phone comes from another IP.
If you also have a firewall at the IP Phones location the IPO will think that the firewall is the IP Phones adress.

Easier to buy a VPN gateway, they come cheap these days if the requirements are low.

 

[FabFab]

Funny thing i made it work once

 

[gknight1]

It might work, but just rememeber that if you were to have a problem and can't figure it out, Avaya isn't going to support it since it isn't a VPN connection.

 

[janni78]

You can use "Monitor" to trace what IP the phone comes from and what IP the IPO tries to talk to when it registers. That should give you a hint of what the problem is.