Cisco BPX 8650, Installation And Configuration Manual

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Glossary
GL-9
Cisco BPX 8600 Series Installation and Configuration
Release 9.3.30, Part Number 78-12907-01 Rev. E0, May 2005
digital private
network signaling
system
See DPNSS.
digital signal 0
See DS0.
digital signal 1
See DS1.
digital speech
interpolation
See DSI.
DLCI
data link connection identifier.
A field in a frame relay data packet that identifies the destination for the data.
domain
A grouping of nodes sharing common interests or attributes.
domain name
A unique name consisting of the letter “D” immediately followed by a number (1 to 8) delineated by a
“.” (period) from the node name (1 to 8 characters maximum). Example: D1.alpha.
domain number
A number from 1 to 8 assigned with the cnfdmn command. The number assigned is part of the domain
name.
DPNSS
digital private network signaling system.
A common-channel message-oriented signaling protocol commonly used by private branch exchanges
(PBXes). The INS Voice Network Switching application supports DPNSS signaling.
DS0
digital signal 0.
A 64 Kbps channel used to transmit encoded voice and/or data. There are 24 DS0 channels in a circuit
T1 (DS1) line. DS0 data is transmitted using one or more DS0 circuits in a T1 or E1 circuit line.
DS0A
An extension of DS0 that defines the format for assembling various low-speed data circuits (1.2 to
19.6 Kbps) into a single 64 Kbps DS0 channel.
DS1
digital signal 1.
A digital transmission standard that carries 24 individual channels in a bipolar, high-speed line signal
at 1.544 Mbps. DS1 signal level is
±
3V.
DSI
digital speech interpolation.
An algorithm that analyzes DS0 voice bits for nonspeech codes. Suppresses these bits to conserve
packet line bandwidth and inserts a code to indicate to the far end that these bits have been removed.
Similar to DFM for data channels. Also, referred to as VAD (Voice Activity Detection).
DTE
data terminal equipment.
As defined by the RS-232 standard, any device that generates or utilizes information. (See also, DCE.)
E
E1
European transmission service at the rate of 2.048 Mbps.
E3
Transmission service at a rate of 34.368 Mbps.