Something
public text v1 · immutable[trunks_incoming_main]
exten => s,1,Noop(${CALLERIDNAME} - ${CALLERIDNUM})
exten => s,2,Dial(${KEYSYSTEM_MAIN})
exten => s,103,Dial(${KEYSYSTEM_CORP})
exten => s,104,Hangup
exten => s,3,Hangup
[trunks_incoming_main]
exten => s,1,Noop(${CALLERIDNAME} - ${CALLERIDNUM})
exten => s,2,Dial(${KEYSYSTEM_MAIN})
exten => s,103,Dial(${KEYSYSTEM_CORP})
exten => s,104,Hangup
exten => s,3,Hangup