hello, I can receive and send a fax in php already. Now, I want to set a specific fxo port, not the whole gateway, to send a fax. What configuration should I set? The environment is described as follow: a freeswitch server based on winxp. server ip: 192.168.1.1 a WellGate 2644 <http://www.welltech.com/product_e_0r.htm> gateway which has 4 fxo and 4 fxs. each fxs/fxo port can register an sip account to freeswitch gateway ip: 192.168.1.2 i config my gateway as below in freeswitch: <gateways> <gateway name="faxgw"> <param name="username" value="0000"/> <param name="password" value="0000"/> <param name="realm" value="192.168.1.2"/> <param name="register" value="false"/> </gateway> </gateways> the gateway register 2 user as below <user id="pstn_fxo1"> <params> <param name="password" value="1234" /> </params> <variables> <variable name="user_context" value="default"/> <variable name="toll_allow" value="domestic,international,local" /> <variable name="effective_caller_id_name" value="pstn_fxo1" /> </variables> </user> <user id="pstn_fxo2"> <params> <param name="password" value="1234" /> </params> <variables> <variable name="user_context" value="default"/> <variable name="toll_allow" value="domestic,international,local" /> <variable name="effective_caller_id_name" value="pstn_fxo2" /> </variables> </user> in my php file, i can send the fax via fxo1 pstn line (use event_socket_request <http://wiki.freeswitch.org/wiki/PHP_Event_Socket>) and the command is "api originate sofia/gateway/faxgw/". $dest_phone_number. " &txfax(tmp.tif)" my problem is 1. How to send fax via fxo2 pstn line Should i bridge to user "pstn_fxo2" first and then dial number? I try to use "api originate sofia/internal/pstn_fxo2 ".$dest_phone_number. " &txfax(tmp.tif)" but it didnt work 2. In <gateway> config The "username" and "password" seem no effect. I just set the "realm" to my gateway ip and it works. And the "register" i dont know it too. The document didnt describe it clearly, can u explain it for me Thank you sincerely. Joy