SYSTEM AND METHOD FOR MAINTAINING PRIVACY APPLIED TO COMMUNICATIONS CAUSED BY AN EMERGENCY

摘要

A User Equipment (UE) and a method operable at the UE are disclosed. The method includes sending a first SIP message to a network, the first SIP message requesting a first service comprising at least privacy; responsive to sending the first SIP message, receiving at the UE a SIP response message, the SIP response message including a Contact header field with an indicator as a value, the indicator based on the first service; and sending a second SIP message with the indicator, the second SIP message requesting a second service.