Patent ID: 8774798

Claim:
A method for determining a capability to provide dynamic local time updates for a call using a system including a visiting location register, the method comprising: in response to an indication of a preference to receive dynamic updates of information received in a first message received from a mobile switching center, sending a requesting message, by a home location register to said visiting location register, requesting information of a capability of said visiting location register to dynamically provide, during a call, a most recent time information associated with a mobile subscriber engaged in the call, the most recent time information including at least one of a most recent local time and a most recent time zone associated with the mobile subscriber; and receiving, at said home location register, a message from said visiting location register indicating said capability of said visiting location register to dynamically provide, during the call, said most recent time information; transmitting to the mobile switching center, a message from said home location register, indicative of said capability of said visiting location register, said message being one of a message indicative of presence of a capability to dynamically provide, during the call, said most recent time information and a message indicative of an absence of a capability to dynamically provide said most recent time information, wherein the capability includes periodically providing during the call, after a terminating party answers and prior to disconnection of the call, the most recent time information associated with the mobile subscriber engaged in the call.