Dialer means an FS that calls to the number and plays some sounds for him/her and returns back him/her responses(interactive Dialplans). I try to make a dialer with PHP but FS results me: 2013-03-02 22:51:59.882940 [NOTICE] switch_channel.c:968 New Channel sofia/sipinterface_1/223 [7482c392-836e-11e2-8fcd-cdbbeee93600] 2013-03-02 22:52:00.382972 [NOTICE] sofia.c:6381 Hangup sofia/sipinterface_1/223 [CS_CONSUME_MEDIA] [NORMAL_TEMPORARY_FAILURE] 2013-03-02 22:52:00.403240 [NOTICE] switch_core_session.c:1517 Session 35 (sofia/sipinterface_1/223) Ended 2013-03-02 22:52:00.403240 [NOTICE] switch_core_session.c:1521 Close Channel sofia/sipinterface_1/223 [CS_DESTROY] My php code is: $this->_fs = new ESLconnection('192.168.54.68', '8021', 'ClueCon'); $eslEvent = $this->_fs->sendRecv('bgapi originate {origination_caller_id_name=Richard-Albuquerque,origination_caller_id_number=1001,ignore_early_media=true}sofia/gateway/trunk_2/223 228') What is the problem? Can i create a dialer with PHP and Event socket?