Someone
public text v1 · immutable;exten => _1234.,1,NoOP(We are in pstn_in. Got Exten: ${EXTEN})
;exten => _1234.,2,Goto(pstn_next,${EXTEN:4},1)
;exten => _1234XX,1,NoOP(We are in pstn_in. Got Exten: ${EXTEN})
;exten => _1234XX,2,Goto(pstn_next,${EXTEN:4},1)