[from-pri-pstn]
exten => _9.,1,Dial(ZAP/g1/${EXTEN:1})

exten => 200,1,Dial(SIP/200)
exten => 201,1,Dial(SIP/201)

exten => 217675,1,Answer()
exten => 217675,n,SayUnixTime(,GMT, R)
exten => 217675,n,hangup

;exten => _X.,1,Dial(ZAP/g2/${EXTEN})

[from-internal]
;time exten
;exten=> 302,1,SayUnixTime(,GMT, R)
;exten=> 302,n,hangup

exten => _X.,1,Dial(ZAP/g2/${EXTEN})