FIELD: information technology.
SUBSTANCE: method comprises steps of: establishing IP channels between a session border controller (SBC) and an IP multimedia subsystem (IMS) terminal, as well as between the SBC and a resource list server (RLS) after receiving a status subscribe request message from the IMS terminal; and sending, by the RLS, subscribed status information and an acknowledgment message to the IMS terminal through the IP channels after the RLS finds the subscribed status information for the IMS terminal.
EFFECT: providing more efficient information transmission.
11 cl, 6 dwg
