Comdial 8312S Manual de instrucciones descargar pdf (Pagina 105)

Direct Inward Station Dialing (DISD)

The direct inward station dialing (DISD) feature allows an external party to call

an intercom station directly without assistance from the attendant (over a line

programmed for DISD). As the system attendant, you may instruct callers to

make DISD calls when necessary.

You may give the caller a DISD line number and the extension number associ

ated with the station he or she is trying to reach. Future calls from the caller to a

specific party will not have to be serviced at the attendant’s station, although a

ring-no answer or busy condition at the called party’s station will result in the

system’s handling the call in another manner (described below).

When a caller makes a DISD call from an outside line, he or she will initially

hear ringing. The system will answer the call with a DISD continuous dial tone;

the caller can then dial an extension number.

· If called station is idle, tone is sounded and called station rings.

· If the call is answered by another station user, the caller can ask for

transfer to desired station.

· If ringing stops and dial tone sounds again, the caller can dial another

extension number.

· If called station has call forward feature set, forward station rings.

· If called station is busy, call is placed on hold and camped-on at busy

station. If camp-on is not answered within a transfer recall timeout

period, busy tone is given, followed by a DISD dial tone.

NOTE: The system will return the caller to DISD dial tone two

additional times and then drop the line.

If called station is busy but is part of a hunt group, DISD call is routed

to idle station in hunt group, if available; otherwise, the call is camped-on

at dialed station. Hunt group is followed when caller hears ringing but

receives no answer.

If an invalid extension number is dialed, an error tone is sounded before

DISD dial tone is returned (caller can redial). If mistake in dialing is

made, caller can dial S for new DISD dial tone.

If extension number dialing is not completed within the programmed

dial time limit, call is routed to DISD assist station if available; otherwise,

the line is dropped.

Attendant Manual - DSU II Digital Expandable System 97

GCA70-245 Attendant Features

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Comdial 8312S Manual de instrucciones Pagina 105