FIELD: radio engineering, communication.
SUBSTANCE: disclosed mobile communication system includes a LTE system which does not support circuit-switched communication, a 2G/3G system which supports circuit-switched communication and an IMS subsystem. The mobile communication system realises SRVCC support and is configured to change paths of a VolP media data signal and a VolP control signal in a first communication state, when a mobile station resides in a LTE system, to paths of circuit-switched communication signal, a VolP media data signal and a VolP control signal in a second communication state, when the mobile station resides in a 2G/3G system, in the resident network of said mobile station.
EFFECT: enabling continuous voice communication within a network when switching between first and second communication states.
2 cl, 26 dwg
