Hello All,

I have a customer who wants a IP phone he can use from home. (a SMT-i520)I have a OfficeServ 7200s with a OAS card, I got the card and phones working in the office. I have looked through other threads in here and I can see what ports need to be opened in the firewall. I am hoping for a public IP from them, but I have not heard back yet.

Here are my questions:

If I get a public IP, do I have to tell the IT people to open those ports I mentioned above and thats it or is more need form them, also I think I tell them to poit to the IP address of the MP 20 right?

If I dont get a public IP all to myself, can I use another one just to point the remote IP phone to (example their email server IP which is public) would the IT guy have to forward those ports open ,a nd if he did to where, the OAS card of the MP-20 card, any answered would be appreciated.