Do you also have a SIP phone you are dialing from? This is what I would have setup: sip.conf: [sipphone] Bla Bla Bla context=local-phones [someprovider] Bla bla bla context=someprovider-in extensions.conf [local-phones] exten => 5555555555,1,Noop(test) [someprovider-in] exten => s,1,Dial(SIP/sipphone)