The address has to be the room they are in

A home agentAskThe agent is not in theHQ building.WhereHomeThe home location isregistered if that isRegisterMoveA move means a newregistration.RegisterHistoryAfter a test, historyshows the location thatAuditInviteThe SIP invite is partof that history.AuditStopA stale HQ row stops aremote rollout.Admin

History only helps after.

Sources and go deeper