violations that is identified by the recipient and then removed in the decoding
process to recreate the original string of zeros.
Bandwidth
Information-carrying capacity of a communication channel. Analog bandwidth
is the range of signal frequencies that can be transmitted by a communication
channel or network. Digital bandwidth is the transmission capacity or data rate
expressed in bits or bytes per second.
Baud
Bits audio. An early telecommunications term referring to the communications
rate, measured in bits per second, at which data can be transmitted through a
modem or serial data line. Most equipment provide a selection of fixed baud
rates, such as 9600 bps.
Bellcore
Bell Communications Research. See Telcordia.
Bipolar
Violation
BPV. A violation of the bipolar transmission pattern, indicating a transmission
error. For example, in AMI coding a BPV occurs when succeeding “ones”
(pluses) are sent at opposite polarities. B8ZS patterns contain intentional bipolar
violations for substitution codes, which are not counted as errors.
Bit Error Rate
BER. The number of coding violations detected in a unit of time, usually one
second. BER is the ratio of errored bits received to the total bits transmitted.
Bits Per Second
bps. The transmission rate for digital information.
Blocked Call
A call that cannot be connected because a line is not available.
Basic Rate
Interface
See Integrated Services Digital Network Basic Rate Interface.
Call Reference
Value
CRV. A number used by central office switches to uniquely identify a DS0 or
subscriber line. In the Access Navigator, the GR-303 switch uses the CRV to set
up crossconnects in the Access Navigator between switch DS0s and drop DS0s.
Channel
The smallest subdivision of a circuit that provides a type of communication
service, usually a one-directional connection between two points. A DS0 is often
treated as a channel because it includes both transmission and receive paths.
Channel Bank
A CSU with service cards that provide individual analog lines to subscriber
phones.
Channel
Service Unit
CSU. A device used to connect a DS1 (T1) digital phone line from the central
office to a PBX or computer system. A CSU performs line-conditioning and
equalization functions, and responds to loopback commands from the central
office.
Circuit
A communications path or network, usually a pair of channels providing bi-
directional communication.
Содержание Access Navigator
Страница 1: ...Access Navigator USER MANUAL Part Number 770 0079 AP Product Release 1 8 August 2003 ...
Страница 82: ...4 18 August 2003 Access Navigator Release 1 8 Access Navigator GR 303 Host with P Phone Ordering Information ...
Страница 104: ...5 22 August 2003 Access Navigator Release 1 8 Physical Installation Attach Access Navigator to Plywood ...
Страница 170: ...6 66 August 2003 Access Navigator Release 1 8 Electrical Installation Exit Management Session ...
Страница 182: ...7 12 August 2003 Access Navigator Release 1 8 Start Management Session NetworkValet EMS and Valet Management ...
Страница 214: ...9 20 August 2003 Access Navigator Release 1 8 Provision DCS Service Test DS1 and DS0 Circuits ...
Страница 296: ...12 18 August 2003 Access Navigator Release 1 8 Provision Remote Adit 600 via FDL Test DS1 and DS0 Circuits ...
Страница 320: ...13 24 August 2003 Access Navigator Release 1 8 Provision Remote Adit 600 via IP DS0 Test DS1 and DS0 Circuits ...
Страница 342: ...14 22 August 2003 Access Navigator Release 1 8 Alarm Clearing Ethernet Link Status LED ...
Страница 434: ...16 36 August 2003 Access Navigator Release 1 8 Maintenance Procedures Install SIMM on Controller Card ...
Страница 456: ...17 22 August 2003 Access Navigator Release 1 8 Update Controller Card Software Download Software ...
Страница 634: ...18 178 August 2003 Access Navigator Release 1 8 CLI Language Reference CLI Command List ...
Страница 658: ...B 6 August 2003 Access Navigator Release 1 8 FDL Interface Access Bank II Capabilities ...
Страница 668: ...C 10 August 2003 Access Navigator Release 1 8 SNMP Interface SNMP Trap Reports ...
Страница 682: ...GlossaryGlossaryGlossaryGlossary 14 August 2003 Access Navigator Release 1 8 Glossary ...
Страница 704: ...Index 1 22 August 2003 Access Navigator Release 1 8 Index ...