A newbie question:

I have setup a SIP gateway using iptel. When I try and call my phone using this code:

new_session = freeswitch.Session("sofia/gateway/iptel/<my_mobile_num>")

... I get the following error:
2010-04-18 13:40:52.082802 [NOTICE] mod_sofia.c:1907 Pre-Answer sofia/internal/1001@<server>!
2010-04-18 13:40:52.082802 [NOTICE] switch_channel.c:669 New Channel sofia/internal/1234@conference.freeswitch.org [ff407e08-e1cf-4d2b-8f83-d30d50431680]
2010-04-18 13:40:52.337877 [INFO] switch_rtp.c:2049 Auto Changing port from <ip1> to <ip2>
2010-04-18 13:40:52.591882 [NOTICE] sofia.c:4789 Hangup sofia/internal/1234@conference.freeswitch.org [CS_CONSUME_MEDIA] [NO_USER_RESPONSE]
2010-04-18 13:40:52.597793 [ERR] mod_conference.c:4563 Cannot create outgoing channel, cause: NO_USER_RESPONSE

This error comes from the called party not responding with an alert or connect indication. How do I make my endpoint respond? Besides a phone number, what else can I set up as an endpoint and how?

Thanks in advance,
Neil