[dialer-test-2]
exten => _X.,1,Set(TIMEOUT(resposnse)=10)
exten => _X.,n,dial(Zap/g1/${EXTEN},60,M(detect-fax^1^2))
exten => _X.,n,noop(back from dial in dialer-test-2)
exten => fax,1,noop("in fax extension")
exten => t,1,noop(timeout)

[macro-detect-fax]
exten => s,1,noop(detecting fax)
;exten => s,n,background(sorry-cant-let-you-do-that)
exten => s,n,NVFaxDetect
exten => s,n,noop(after NVFaxDetect)
exten => fax,1,noop(got fax)
exten => fax,n,hangup
exten => talk,1,noop(got talk)
exten => talk,n,hangup