In this section:
Enable this flag to use PSX routes for routing OOD (Out-Of-Dialog) methods to registered users.
% set addressContext <name> zone <name> sipTrunkGroup <name> signaling psxRouteForSubscribe <disabled | enabled>
Use this flag to allow P-CSCF to use the PSX returned route as the Request URI in the register.
% set addressContext <name> zone <name> sipTrunkGroup <name> signaling usePSXRouteAsReqUriInReg <disabled | enabled>
Use this flag to allow the SBC to use the PSX returned route instead of stored-service route information for processing emergency calls from registered users.
% set addressContext <name> zone <name> sipTrunkGroup <name> signaling usePsxRouteForEmergencyCall <disabled | enabled>