AT&T 944 - Manual (Page 31)

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INTERCOM OPERATION
This intercom features both a single-phone page and a system-wide page.
A single-phone page alerts only one phone; a system-wide page alerts all
phones. Any phone with the Do Not Disturb (DND) feature activated will
not receive a page.
An intercom call rings at the extension called with a repeating
double-ring pattern.
A single-phone page automatically activates the speakerphone on the
receiving phone. You can deactivate the speakerphone by lifting the
handset.
NOTE: If a line is in use, pressing
I or p will place the line
on hold and activate the intercom.
Basic Intercom Operations
INTERCOM Any two stations connected to Line 1 can ring each other.
PAGE Lets you “announce” over the speaker of the phone
you’re calling. The person you’ve called can respond
just by talking.
PAGE ALL Lets you “announce” to all phones in the system at the
same time (system-wide page).
CONFERENCE Lets you connect another intercom call with an outside line.
Making an Intercom Call with the Handset
1 Press
I and lift the handset. The screen displays ICM.
2 Dial the extension number of the party you wish to reach. If that
extension is idle, you will hear long beeps. If that extension is
busy, you will hear a busy signal. If that extension is set to Do Not
Disturb, you will hear short beeps.
NOTE: The intercom call is automatically cancelled if you do not dial
an extension within 10 seconds.
NOTE: When you direct an intercom call to one extension, any
extension in the system can answer the call by pressing
I.