FreePBX as SIP gateway for any telephone systems

we need some help with our dialplan. we installed one freepbx connected to a carrier SIP trunk, no sip phones on the system. we connected some different SIP telephone systems.

we disabled all features in freepbx. it only should be used as gateway, should not be play “invalid number” or busy tones …

how can i do that?
Cisco telephones system make a call through SIP to the freepbx. Freepbx passes the call to the SIP carrier (already works fine).
now the destination is busy or the number is invalid (…),
freepbx should pass the original hangup code to the cisco machine.

thanks for any help!


is it really so easy? can’t believe it :slight_smile:

exten => _0.,1,Dial(SIP/${EXTEN},,tToR) exten => _0.,n,Hangup(${HANGUPCAUSE})