exten => s,1,Cut(TECHNOLOGY=CHANNEL,/,1)
exten => s,2,Noop(TECHNOLOGY is ${TECHNOLOGY})
exten => s,3,GotoIf($["${TECHNOLOGY}" = "Zap"]?4:99)
exten => s,4,Cut(REAL_CHANNEL=CHANNEL,-,1)
exten => s,5,Noop(REAL_CHANNEL is ${REAL_CHANNEL})
exten => s,6,GotoIf([${REAL_CHANNEL} = "Zap/1"]7:9)
exten => s,7,SetCIDNum(4811}
exten => s,8,Goto(s,99)
exten => s,9,GotoIf([${REAL_CHANNEL} = "Zap/2"]10:12)
exten => s,10,SetCIDNum(4812}
exten => s,11,Goto(s,99)

exten => s,99,Dial(IAX2/..........