Callback - AT&T Merlin Legend 10BS User Manual

Features

Callback

When you reach a busy extension or the outside line you want
to use is busy, use Callback to automatically place the call
when the extension or line is free.
You'll hear two short rings and one long ring as soon as the
extension or line is free. The call is placed when you lift the
handset or press Speakerphone.
On phones with ICOM buttons, Callback works only for busy
inside extensions; use Line Request for busy outside lines.
(See Line Request.) On phones with SA buttons, Callback
works with busy inside extensions; it works with busy outside
lines only when you are using an SA or Pool button to make a
call.
Callback works only when the outside line you want to use is
busy, which is indicated by a fast busy signal. Callback does
not work when the outside phone number you call is busy,
which is indicated by a normal busy signal.
You can use Callback either selectively or automatically:
Selective Callback is activated when you dial the
feature code or press a programmed button.
Automatic Callback is activated every time you reach
a busy extension or, if your phone has SA buttons, a
busy outside line. You need to program your phone for
Automatic Callback.
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Callback