Specifications

GLOSSARY LBI-39000B

9. GLOSSARY

AC Authorization Code -- A number that can be dialed to enable users top access dialing

privileges. The maximum number of digits in an AC is seven. Each AC provides its users with

a Class of Service that overrides any restrictions associated with the station being used to make

a call. The MD110 supports up to 20,000 Authorization Codes. This feature can be turned off

for EDACS users. See DISA.

ACU Alarm and Control Unit. The ACU provides 32 alarm inputs and 8 relay outputs and allows

for external device alarming to the System Manager. The ACU and Test Unit (TU) form the

Test and Alarm Unit (TAU).

Call Conferencing Ability to have radio users call a common telephone number to initiate a conference.

Call Discriminator A function of the MD110 PBX, the call discriminator verifies that the caller is allowed to call

the dialed number.

Call Forwarding Automatically forwards incoming calls to any phone number that the user can dial directly.

There are a number of services that use the call forwarding feature. Plain call forwarding

refers to calls that are forwarded on busy/no answer to a pre-arranged number such as a voice

mail number. One may also immediately call forward on do not disturb.

CEC Console Electronics Controller. This controller is the console switch that supports Ericsson’s

C3 Series Consoles.

Channel Bank See Multiplexer.

CO Central Office -- Location of public telephone switching equipment.

Common Speed Dial Allows the user to program his or her line so that frequently called numbers can be reached by

dialing one or two digits. To make a speed dial call, first dial the MD110 telephone number,

then enter the speed dial digits.

Console Users Dispatch Operators using EDACS consoles.

COS Class of Service -- Determines which types of calls and features are available to each user of

the MD110 PBX system. A total of 64 common COS is available for voice terminals.

CTIS Centralized Telephone Interconnect System.

C3 Type of Console.

DCE Data Communications Equipment.

DID Direct Inward Dial -- Allows callers from the public network to place an individual call to a

radio by dialing a single telephone number, instead of one telephone number to call Jessica and

a second series of numbers to indicate the Logical ID. To accomplish this, the LID is mapped

to a 3-, 4-, or 5-digit number. In some cases, the DID number will be the LID.

DISA Direct Inward System Access -- A software feature of Ericsson MD110 switches that allows

PSTN users to have extension-like capabilities and privileges via Authorization Codes.

DTE Data Terminal Equipment.