Abstract: A call forwarding system is provided wherein a subscriber may forward calls from a first telephone to a desired destination, for example, a mobile telephone. A “Call Unforward Once” function is provided wherein a subscriber or other user may bypass the call forwarding for an individual call, but maintain the call forwarding function for other calls. In operation, the subscriber may place a call from the forwarded-to number to the forwarded-from number and dial a predetermined function code. The function code allows the user to connect to the forwarded-from number.

Abstract: A method and apparatus for utilizing a multi-channel digital communications line provides dynamic bandwidth allocation of user data channels for supporting a data device and an audio device, such as a digital telephone. In the preferred embodiment, the communications line is an ISDN line in which both B-channels are dedicated to data transfers for the data device when the audio device is idle. However, the signaling channel is continuously monitored to detect events in which incoming and outgoing voice calls are indicated. One of the B-channels is surrendered in order to allow connectivity of the voice call. Reallocation of the surrendered B-channel to the support of a data transfer occurs upon detection of a D-channel signal that indicates that the audio device has released the channel.