| 摘要 |
PROBLEM TO BE SOLVED: To provide methods and apparatus for providing useful data in association with a high-priority call such as an emergency call.SOLUTION: In one embodiment, the data comprises data (e.g., an MSD or FSD) embedded within one or more real-time protocol packets such as RTP Control Protocol (RTCP) packets that are interspersed within a voice or user data stream (carried in, e.g., RTP packets) of an emergency call. Apparatus and methods are described for transmitting the data portion reliably from the initiating terminal (e.g., an in-vehicle system) to a Public Safety Answering Point (PSAP), by using the same transport connection as the user data. |
