Technical information

Glossary

GL-4 Issue 7 June 2001

Class of Restriction

A number (0 through 63) that specifies the calling privileges and limitations assigned to stations,

Remote Access users, and trunk groups. For DEFINITY G3rV1, G3i-Global, and G3V2 and later,

CORs have been increased to 96; thus, the number is 0 through 95.

Class of Service

For DEFINITY G2 and System 85, specifies the calling privileges and limitations assigned to the

station. For DEFINITY ECS, DEFINITY G1, G3, and System 75, a number (0 through 15) that

specifies if users can activate Automatic Callback, Call Forwarding, Console Permissions, Data

Privacy, and Priority Calling features. For G3V2 and later, also specifies additional COR feature

restrictions.

CMS Measurements

Measures traffic patterns and time on calls to compare them with preset traffic counts and time limit

thresholds.

Coverage Path

The order in which calls are redirected to alternate answering positions.

Customer Premises Equipment-Based System

A customer’s PBX, voice mail, or voice processing system.

DAC

Dial Access Code (see Trunk Access Code)

DCS

Distributed Communications System

DDD

Direct Distance Dialing

DID

Direct Inward Dialing

DISA

Direct Inward System Access

Digit Conversion

A process used to convert specific dialed numbers into other dialed numbers.

Direct Inward Dialing

Allows an incoming call from the public network (not FX or WATS) to reach a specific telephone

without attendant assistance. DID calls to DID-restricted telephone lines are routed to an attendant

or recorded announcement, depending on the option selected.

EPSCS

Enhanced Private Switched Communications Service