AT&T 3.0 manual Cor, Crc, Csu

Glossary

CONVERSANT Voice response application that automatically answers and routes calls and executes telephone transactions.

conversion resource

COR

See modem pool.

(class of restriction) Various types of restrictions that can be assigned to remote access trunks or barrier codes. These restrictions consist of calling restrictions, ARS Facility Restriction Levels (FRLs), Allowed Lists, Disallowed Lists, and pool dial out restrictions.

Coverage

CRC

Set of system features that can determine how extensions’ calls are covered when the person at the extension is busy or not available.

(cyclic redundancy check) An error-detection code used on DS1 facilities with the extended superframe format (ESF).

CSU

cyclic redundancy check

(channel service unit) Equipment used on customer premises to provide DS1 facility terminations and signaling compatibility.

See CRC.

D

D4 framing format

Data-channel

data communications equipment

data hunt group

Framing format consisting of a sequence of individual frames of 24 eight- bit slots and one signal bit(193 bits) in a 12-frame superframe. See also ESF.

See D-channel.

See DCE.

See DHG.

Maintenance and Troubleshooting GL–9