AT&T 410 820 - Manual (Page 6)

Line Request
If you want to use a particular outside line that is busy (green
light is on), you can tell the
MERLIN system to signal you when
the line is free. Just touch the busy line button (red light comes
on), leaving the handset on the hook. When the line is free, you
will hear a beep. Just lift the handset to dial. If you touch another
line button or receive a call, or if someone else uses the line
before you, your Line Request is cancelled.
+ 555-1234
ANSWERING AN OUTSIDE CALL
Again, just lift the handset; the system automatically gives you
the ringing line.
PLACING AN INTERCOM CALL
Use the Intercom button for calling people who are connected
to your
MERLIN system. The Intercom button works like any
line button.
To place an intercom call, just touch Intercom and dial the in-
tercom number you want. When you hear the beep, make the
announcement or start your conversation.
Intercom +
The codes for calling people inside your business are as follows:
0 to 5 (Model 206)
10 to 19 (Model 410)
10 to 29 (Model 820)
ANSWERING AN INTERCOM CALL
Answer an intercom call as you would any call: just lift the hand-
set to get the ringing intercom line.
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