I have tried <extension name="transfer_to_MeiLan"> <condition field="destination_number" expression="^014(\d+)$"> <action application="bridge" data="sofia/internal/$1%192.168.141.187"/> </condition> </extension> But FS still return the same message........ [WARNING] mod_sofia.c:2534 sofia_outgoing_channel() Cannot locate registered user 97710001@192.168.141.187 [NOTICE] mod_sofia.c:2642 sofia_outgoing_channel() Close Channel N/A [CS_NEW] [ERR] switch_ivr_originate.c:1425 switch_ivr_originate() Cannot create outgoing channel of type [sofia] cause: [USER_NOT_REGISTERED] [INFO] mod_dptools.c:1998 audio_bridge_function() OriginateFailed. Cause: USER_NOT_REGISTERED [NOTICE] mod_dptools.c:2030 audio_bridge_function() Hangup sofia/internal/1001@192.168.141.182 [CS_EXECUTE] [USER_NOT_REGISTERED]