FIELD: information technology.
SUBSTANCE: method includes steps of: receiving a service request message; choosing a target channel from all the channels that are multichannel-cascaded with an opposite cascaded media control server according to the service request message and a preset channel usage rule; and sending information about the determined target channel to the opposite cascaded media control server to enable the opposite cascaded media control server to carry out code stream switching according to the information about the target channel.
EFFECT: saving channel resources.
11 cl, 5 dwg
