Re: [Serusers] Firewall and NAT

I have got an H323 Mediatrix FXO gateway. It is not SIP based. May I use it with SER? Thanks Emery ----- Original Message ----- From: "Klaus Darilion" &lt;darilion(a)ict.tuwien.ac.at&gt; To: "Rich Adamson" &lt;radamson(a)routers.com&gt;om>; &lt;serusers(a)lists.iptel.org&gt; Sent: Wednesday, July 23, 2003 15:38 Subject: RE: [Serusers] Firewall and NAT I think its this way: FXO-interface: connects to the PSTN network an behaves like a normal phone the PSTN network. FXS-interface: connects to phone and behaves like a PSTN network to the phone (acts as a power supply for the phone). Simple scenario: Analog Phone <---> FXS + PC <----VoIP----> PC + FXO (=Gateway) <---->PSTN regards, Klaus -----Original Message----- From: Rich Adamson [mailto:radamson@routers.com] Sent: Wed 23.07.2003 14:23 To: serusers(a)lists.iptel.org Cc: Subject: Re: [Serusers] Firewall and NAT Might take a closer look at the Checkpoint to see if it is doing Port Address Translation (PAT) in addition to NAT. If I recall correctly, the older versions of Checkpoints software did PAT, which caused folks problems when an app wanted to use specific tcp/udp port numbers (for example, when trying to use an non-checkpoint VPN box on the inside of the checkpoint). Think the FXS is a Foreign Exchange interface intended to tie a ser-accessible gateway to a telephone/pbx line (not to a telephone instrument). _______________________________________________ Serusers mailing list serusers(a)lists.iptel.org http://lists.iptel.org/mailman/listinfo/serusers _______________________________________________ Serusers mailing list serusers(a)lists.iptel.org http://lists.iptel.org/mailman/listinfo/serusers