I wrote my own new FreeSwitch module "mod_skel" and successfully created an application interface with: SWITCH_ADD_APP(app_interface, "my_mod_skel", "Modul skel", "test", mod_skel_function, "no Syntax", SAF_NONE); The dialplan is <extension name="sip_test"> <condition field="destination_number" expression="^54322$"> <action application="my_mod_skel" data=""/> </condition> </extension> In the function mod_skel_function I do the following to answer the call. SWITCH_STANDARD_APP(mod_skel_function) { switch_channel_t *channel = switch_core_session_get_channel(session); switch_channel_clear_flag(channel, CF_PROXY_MEDIA); switch_channel_clear_flag(channel, CF_PROXY_MODE); switch_channel_answer(channel); } The problem is that sofia hungs up immediatley (see logfile below). How can I keep the call alive? How can I pick up a new incoming call and start a conference? 2009-10-04 21:13:01.827000 [NOTICE] mod_sofia.c:1503 Pre-Answer sofia/internal/1 002@192.168.1.33! 2009-10-04 21:13:06.795000 [NOTICE] mod_skel.c:121 Channel [sofia/internal/1002@ 192.168.1.33] has been answered 2009-10-04 21:13:06.803000 [NOTICE] switch_core_state_machine.c:179 Hangup sofia /internal/1002@192.168.1.33 [CS_EXECUTE] [NORMAL_CLEARING] 2009-10-04 21:13:08.229000 [NOTICE] switch_core_session.c:1087 Session 1 (sofia/ internal/1002@192.168.1.33) Ended 2009-10-04 21:13:08.229000 [NOTICE] switch_core_session.c:1089 Close Channel sof ia/internal/1002@192.168.1.33 [CS_DESTROY] _________________________________________________________________ http://redirect.gimas.net/?n=M0910xHotmail2 Neu, Besser, Hotmail - Die neuen Features sind da!