Basic Working Parking
public ini v1 · immutable[testing]exten => _7XX,1,Answerexten => _7XX,2,Wait(1)exten => _7XX,3,ParkAndAnnounce(pbx-transfer:PARKED|7200|SIP/101|default,${E$exten => _8XX,1,Answerexten => _8XX,2,Wait(1)exten => _8XX,3,ParkedCall(7${EXTEN:1})