[default]
exten => s,1,noop(options)

exten => _[+0-9]X.,1,noop(call received)
 same => n,ringing()
 same => n,progress()
 same => n,dial(PJSIP/440000000002@outbound,,gr)
 same => n,hangup()

exten => h,1,noop(hangup)

exten => T,1,noop(timeout)