FIELD: information technology.
SUBSTANCE: based on the access number to a group switch, a service switching device establishes a connection with a service access device; in relation to the conformity of the service identifier of the terminal with the connection identifier, the service access device searches for a connection identifier which corresponds to the service identifier of the called terminal, and sends the connection identifier of the called terminal to the service switching device; based on the connection identifier of the called terminal, the service switching device establishes a connection between the calling terminal and the called terminal, and the service access device reproduces the response standby group signal in the calling terminal.
EFFECT: eliminating the problem of bypassing an audio channel when reproducing a response standby group signal.
17 cl, 5 dwg
