Newly launched latest cars and bikes

Newly launched latest cars and bikes

incoming from a step-by-step office. Trunks from such offices are often

referred to as "bylink" trunks even when incoming to noncrossbar offices; they

are more properly referred to as "dc incoming trunks." Such high-speed means

are necessary to assure that the first incoming pulse is not lost.



Cable Vault: The point which phone cable enters the Central Office building.



CAMA: Centralized Automatic Message Accounting - Pronounced like Alabama.



CCIS: Common Channel Interoffice Signaling - Signaling information for trunk

connections over a separate, nonspeech data link rather that over the trunks

themselves.



CCITT: International Telegraph and Telephone Consultative Committee- An

International committee that formulates plans and sets standards for

intercountry communication means.



CDO: Community Dial Office - A small usually rural office typically served by

step-by-step equipment.



CO: Central Office - Comprises a switching network and its control and support

equipment. Occasionally improperly used to mean "office code."



Centrex: A service comparable in features to PBX service but implemented with

some (Centrex CU) or all (Centrex CO) of the control in the central office. In

the later case, each station's loop connects to the central office.



Customer Loop: The wire pair connecting a customer's station to the central

office.