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We are trying to set up two remote voip phones.
We have set up one correctly by opening ports to that phone on the router but are wondering how to accomplish this with the other one. we had to open pin hole to forward ports to a specific ip address and with having two phones with dfferent ip address this will cause som conflict

You do not need to open any ports on the phone side, you just need to make sure certain ports are not blocked. The ITP phones actually initiate the traffic to the system, so returning traffic is automatically allowed by the router on the phone side. The only ports that need to be opened are on the system side.

I have a netopia router and the only way I see to open ports are to open pin hole to a certain ip address. Having two phone with two different IP addresses i am not sure how to accomplish. Could someone please help.
Thank you

Again... you do not need to open any ports on the phone side, you just need to make sure certain ports are not blocked.

If you have the two phones on the same remote network I have only ever acheived this by changing the ITP settings to turn on "use remote MGI", otherwise only one of the phones would work at a time.