Specifications

External Paging Interface (External Paging Port)

The external paging port, available on the services circuit board, provides an interface for external paging

equipment. When the installer assigns the external paging port to a paging zone, announcements to that zone are

sent through the external paging equipment installed at the port. When the installer assigns one of the relays that

are available on the central processor unit circuit board to the paging zone, it provides a dry-contact actuation

for the duration of the page to that zone. Typically, the installer wires the system so that this actuation enables

the external paging equipment while the paging signal is sent through it.

The installer can program a line port as an external paging interface for an external paging amplifier. When this

feature is available, station users access the amplifier by selecting that line port. The paging line port accepts

dialed DTMF tones to make a zone selection if the amplifier provides this function. When the installer assigns a

flexible ringing assignment to the external paging port, the external paging equipment responds to a ring signal

and sounds the ringing over the paging loudspeaker. The installer can assign one of the common audible ringer

interface relays to track the ring signal that is supplied to this external paging port. Typically, the installer wires

this relay so that its contact actuation enables the paging equipment.

Also refer to the discussions titled Auxiliary Ringer Interface, Common Audible Ringer Interface, Flexible

Ringing Assignments, Line Answer From Any Station, and Night Transfer (Of Ringing).

Feature Inhibit

The installer can disable a large array of individual features to provide a very basic telephone system when it is

necessary. A basic system might be necessary at a site where a large proportion of the telephones are accessible

to unauthorized users that may use them to tamper with the system, or such a system may be necessary for

locations where users only need a narrow range of features to do their job.

General Description 6 – 47

General Description GCA40–215