i2021 ISDN Teleset
GLOSSARY
The definitions in this Glossary refer to the i2021 Teleset only.
Bearer Service - also known as Bearer Capability. The type of service that can be accessed on the “B” channel. Typical Bearer Services are voice, data, and audio,
Call Appearance (CA) - A hardkey on the Teleset that is programmed for voice communication. A CA may have a unique Directory Number, or it may be the same telephone number that appears on other keys or other Telesets.
Call Appearance Call Handling (CACH) - Pronounced “cash”- Refers to a translation in the Central Office switch. CACH is the recommended setting for the i2021.
Customer Premises Equipment (CPE) - Devices residing at or on the customers’ premises. The i2021 Teleset is CPE.
CENTREX - A business telephone service offered by the local telephone company. CENTREX offers many Electronic Key Telephone features to enhance the operation of the i2021.
Directory Number (DN) - Also known as a telephone number.
Electronic Key Telephone Service (EKTS) - A feature that allows the Teleset to have Multiple Call Appearances (MCA) and Shared Call Appearances (SCA).
Feature Activator/Indicator - A softkey or a programmable hardkey used to access a specific switch feature, i.e., Conference, Drop, Transfer, Call Forward, Call Park, Inspect, etc.
ISDN Ordering Code (IOC) - This is a code supplied by a terminal manufacturer to be used by the telephone company in provisioning the ISDN service. (See TP Packages)
Multiple Call Appearance (MCA) - Additional Call Appearances of the same Directory Number.
Network Termination 1 (NT1) - A piece of CPE required to interface “S” interface devices with the “U” interface from the telephone company.
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