FIELD: communication systems, in particular, systems and methods for switching calls from packet commutation networks to channel commutation networks.
SUBSTANCE: in accordance to the invention, communication system includes first terminal, capable of realizing communications through packet commutation network and channel commutation network, and second terminal, capable of realizing communications through channel commutation network and a gate, which ensures: indication of connections between packet commutation network and at least one channel commutation network, maintenance of communication between first terminal and second terminal in such a way, that first terminal has packet commutation connection to the gate, and second terminal has channel commutation connection to the gate, where first terminal is capable of setting up a channel communication connection to a gate, when level of signal in packet commutation connection between first terminal and the gate remains below predetermined threshold for longer than predetermined time period, where gate ensures communication between channel commutation connection, set up between first terminal and the gate, and channel commutation connection, set up between the gate and second terminal in cases, when first terminal sets up a channel commutation connection to the gate.
EFFECT: creation of an efficient method for switching calls from packet commutation communication network to channel commutation communication network.
5 cl, 4 dwg
