[Contents] [Prev] [Next] [Index] [Report an Error]

ISDN Channels

ISDN uses separate channels to transmit voice and data over the network. Channels operate at bandwidths of either 64 Kbps or 16 Kbps, depending on the type of channel.

Bearer channels (B-channels) use 64 Kbps to transmit voice, data, video, or multimedia information. This bandwidth is derived from the fact that analog voice lines are sampled at a rate of 64 Kbps (8,000 samples per second using 8 bits per sample).

Delta channels (D-channels) are control channels that operate at either 16 Kbps or 64 Kbps. D-channels are used primarily for ISDN signaling between switching equipment in an ISDN network.

[Contents] [Prev] [Next] [Index] [Report an Error]