Abstract:
Disclosed are a method, apparatus, and system for switching from a fax channel to a voice channel. Herein, the method includes: after entering a T.38 fax, counting a first quantity of scheduling periods during which a local end does not demodulate any fax data continuously, and counting a second quantity of scheduling periods during which a remote end does not receive any T.38 packet continuously; and judging whether the first quantity and the second quantity both reach a threshold, and switching from a T.38 fax channel to a voice channel when the first quantity and the second quantity both reach the threshold.