Definitions for "D Channel"
Keywords:  isdn, bri, pri, kbps, duplex
The 'data' channel of the ISDN interface, used to carry packet-switched control signals and data relating to customer call. In the BRI, the D channel operates at 16 Kbits/s. In the PRI, the D channel operates at 64 Kbits/s.
Delta or Data channel. An ISDN channel that carries signaling information at 16 kbps in BRI or 64 kbps in PRI. Also see B channel.
The D channel is a packet-switched channel that carries signaling and control for B channels. In Basic Rate ISDN (BRI) applications, it can also support customer packet data traffic at speeds up to 9.6 kilobits per second.
Keywords:  see
see 2B+D