Someone

exten => _6.,1,Cut(TECHNOLOGY=CHANNEL,/,1)
exten => _6.,n,NoOp(TECHNOLOGY is ${TECHNOLOGY})
exten => _6.,n,GotoIf($["${TECHNOLOGY}" = "Zap"]?4:99)
exten => _6.,n,Cut(CHAN=CHANNEL,-,1)
exten => _6.,n,NoOp(CHAN is ${CHAN})
exten => _6.,n,GotoIf($[${CHAN} = "Zap/1"]?10:7)
exten => _6.,n,GotoIf($[${CHAN} = "Zap/2"]?20:8)
exten => _6.,n,Set(CALLERID(num)=<02070434810>)
exten => _6.,n,Goto(99)
exten => _6.,10,Set(CALLERID(all)=Phil Reynolds <02070434811>)
exten => _6.,n,Goto(99)
exten => _6.,20,Set(CALLERID(all)=J. David Tyler <02070434812>)
exten => _6.,n,Goto(99)
exten => _6.,99,Dial(${VT}/${EXTEN:1})