[line_one_sip]
;anything you dial will connect on the pots line
;exten => _X.,1,Answer()
exten => _X.,1,Dial(Zap/1/${EXTEN})
exten => _X.,2,Hangup()



###############
busy message in cli
################

   -- Executing [3303174686@line_one_sip:1] Answer("SIP/1-081f59d0", "") in new stack
    -- Executing [3303174686@line_one_sip:2] Dial("SIP/1-081f59d0", "Zap/1/3303174686") in new stack
    -- Called 1/3303174686
[Apr  2 15:41:46] WARNING[4794]: chan_zap.c:3835 zt_handle_event: Detected alarm on channel 1: No Alarm
    -- Hungup 'Zap/1-1'
  == Everyone is busy/congested at this time (1:0/0/1)
    -- Executing [3303174686@line_one_sip:3] Hangup("SIP/1-081f59d0", "") in new stack
  == Spawn extension (line_one_sip, 3303174686, 3) exited non-zero on 'SIP/1-081f59d0'
[Apr  2 15:41:47] NOTICE[4710]: chan_zap.c:6678 handle_init_event: Alarm cleared on channel 1