In Integrated Digital Service Network Technology a channel outside of the normal information transfer bandwidth used for the transmission of control signals.

Used to control the flow of data through the network: out-of-band call setup and teardown and maintenance of overhead functions, such as signaling between telephone company switches and network monitoring.

The D channel is a part of ISDN that transmits control and connection data.

The timeslot on an E1 trunk or on a T1 trunk in which common channel signaling information is passed. See also B channel, Channel Associated Signaling, and Common Channel Signaling.

It is the data chanel of an ISDN connection. Its speed can be 16 or 64 Kbps

a term for an ISDN 16 Kbps channel that carries signaling information.

Data channel used in an ISDN interface to carry control signals and customer call data. In Primary Rate Interface (PRI), the D channel runs at 64,000 bits per second. The D channel provides the signaling information for each of the 23 voice channels (B or Bearer channels).

Full duplex 16 Kbps or 64 Kbps ISDN channel (in basic rate and primary rate interfaces, respectively) used to transmit control data or user data.

Full duplex 16 Kbps (basic rate) or 64 Kbps (primary rate) ISDN channel.

In ISDN service, the D channel is also called the delta channel and is used for control and signaling functions. In BRI-ISDN, the D-channel is 16 kHz of bandwidth; in PRI-ISDN, the D-channel is 64 KHz of bandwidth.

An ISDN channel (path between the ISDN modem and the Central Office switch) responsible for signaling the switch to let it know what kind of call is coming through (voice or data).

A channel that carries WAN synchronization information on a line using ISDN D-channel signaling.

A channel used to transport packetised signalling information between the user and the local exchange.

The signaling and data transmission channel (specified in ISDN standards) used to transmit network control signals for setting up phone calls.

The ISDN signaling channel. Runs at 16 or 64 Kbps.

The signalling channel on an ISDN line used to carry messages between an ISDN modem and the public switch. It runs at either 16 or 64 Kbps.

A channel on an ISDN line that can carry signaling information and low-speed packet data.

In ISDN, the channel that provides data transmission and signalling information. The D channel provides the data needed for setting up the proper transmission of calls. The D-channel can be used to carry EFT, POS and security signalling.

The data signaling channel of an ISDN line. This channel is used to carry call control messages between the ISDN terminal and the public switch.

Data Channel. A 16 Kbps (BRI) or 64 Kbps (PRI) full-duplex ISDN channel.

The "data" signaling channel, in the ISDN scheme; this is the channel that carries signaling and limited packet communications. In basic rate ISDN, this is a full-duplex 16 Kbps channel; in primary rate ISDN, this is a full-duplex 64 Kbps channel. See Basic Rate Interface, Integrated Services Digital Network, and Primary Rate Interface.

The timeslot on an E1 trunk, a T1 trunk, or telephony bus in which common channel signaling information is passed. See also B channel, BRI, CAS, Common Channel Signaling (CCS), ISDN.

An ISDN Data channel is a data connection between the telephone company’s switching equipment and their customer’s ISDN equipment. It carries telephone connection information - signals to tell your equipment that a call is coming in and carry dialing and call handling information to the phone company’s equipment - and can also be used to carry multiple low-speed data connections using the X.25 packet-switching protocol.

An ISDN signaling channel used to carry control signals and low speed data.