ADTRAN 25 manual Glossary

GLOSSARY

Number Plan Area (NPA)

The area code.

Off-Premises Station (OPS)

An arrangement provided by the local telephone company permitting remote terminal equipment to operate as though it were directly connected to the system. This tariffed service can be provided only for FCC-registered single-line voice terminals.

Out-of-Building Station

Terminal equipment directly connected to the system, but not located in the same building as the common equipment. S p e c i a l arrangements are made to protect the system and its users from lightning, power line crosses, etc. Only single-line and 7300H series voice terminals may be so connected. (MET sets cannot be connected as Out-of-Building Stations.)

Paging Trunk

A telecommunications channel used to access a paging system.

Peripheral Equipment

Equipment connected to one of the RS-232C channels on the CPU/Memory circuit pack. Examples are the System Administration Terminal (SAT), SMDR Output device such as a Printer or a Call Accounting System, Digital Tape Unit (DTU), and Customer Service Unit (CSU) .

Personal Dial Code (PDC)

Voice terminal extension number.

Each system user is assigned a PDC and is allowed to “log in” the PDC at any voice terminal in the system. The PDC may be a 1-, 2-,

3-, or 4-digit number. There are two types of PDCs:

●The PDCs assigned to voice terminals—One is associated with each voice terminal in the system.

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