Simplified method for ims registration in event of emergency calls. RU patent 2463710.

FIELD: information technology.

SUBSTANCE: method of setting up an emergency call connection from a terminal to an IP multimedia subsystem (IMS) via a network visited by the terminal, wherein, if the terminal is already registered in the IP multimedia subsystem, an IP multimedia subsystem registration of the terminal in the IP multimedia subsystems for the emergency call connection is dispensed with when setting up the emergency call connection, if a comparison between a network identifier for the visited network, about which the terminal was notified when it registered in the visited network, and a network identifier of the home network of the terminal reveals a match between these network identifiers.

EFFECT: faster call setup.

21 cl, 1 dwg

IPC classes for russian patent Simplified method for ims registration in event of emergency calls. RU patent 2463710. (RU 2463710):

H04L29/06 - characterised by a protocol

H04H60/91 - BROADCAST COMMUNICATION (multiplex communication H04J; pictorial communication aspectsof broadcast systems H04N)

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