ATT System 25 Single Line Telephone User Guide

Call Waiting
While you are using your phone, you may be notified through
the handset that a call is waiting.If you hear one short tone, it
is an inside call waiting for you; two short tones indicate that
you have an outside call waiting.
You must either end the existing call or place it on hold in order
to answer the call waiting.
Answering - Holding the Existing Call
1 Press the switchhook.
2  Listen for confirmation tone and dial tone.
3 Press 
*  9 .q q
4  Answer the waiting call.
5  After completing...

Callbackq
2  After confirmation tone and dial tone, press       #       6         0  .
If a System 25 extension or outside line is busy when you place a
call, you can request a callback. Your call will wait in a line (a
“queue” ) for the extension or line to become available. The
system will then ring you back and complete the call.
For inside calls, use Callback when you hear a busy or special
ringback tone.For outside calls, use Callback only when you
hear a fast busy tone. (You may hear the callback...

Conference Calls
You can set up a three-party conference that includes other
System 25 people as well as outside callers. When you are on a
conference call, if you drop the first person you placed in the
conference, you will loose the entire call. (If the first person
hangs up, however, the second person will remain, and the
conversation can be completed. ) You can drop the second
person added to the conference and still continue with your call.
Setting Up Conference Calls
1
2
3
 4 
5
Dial the first...

Direct Group Calling (DGC)q
Your System Administrator will advise you if you have been
assigned as a member of a Direct Group Calling (DGC) group.
Calls that go to these groups are distributed among its members
for the purpose of answering incoming group associated calls.
Leaving the Group
Members may temporarily not receive incoming calls by use of
the following procedures:
1 Listen for
2 Listen for
Returning
1 Listen for
2 Listen fordial tone, then press *  4 .
q q
confirmation tone and hang up.
to the...

Following
You can have personal calls sent to another phone by using the
Following or the Forwarding feature. To use the Following
feature, at a telephone other than your own, you sign in your
extension number. To cancel the request, you may either sign
out your extension number from that other phone, or sign back
in at your own telephone.
Although Following and Forwarding send your calls to another
telephone, the two features differ slightly. Read the information
and procedures for both, and then use...

Forwarding
You can have your personal calls sent to another extension or to
an outside number. Unlike the Following feature, you do not
need to be at the other telephone. Instead, simply forward your
calls to another location while you are still at your own
telephone.
Read the information and procedures for both the Forwarding
and Following features.Then use the feature that best fits your
needs.
NOTE: Your System Administrator may or may not allow your
telephone to forward calls to outside telephone...

Hold
You can hold calls while you attend to other matters and then
pick them up again.
After you put a call on hold, you may then
hang up the handset without losing the call. To pick up a call
you have placed on hold you must use the same telephone
where you held the call.
If you want to put a call
extension, you must useon hold and pick it
the “Park” feature.up from another
Using Hold
1 Press the switchhook.
2 Listen for confirmation tone and dial tone.
3 You may go back to your call by pressing the...

Leave Word Calling
You can use the Leave Word Calling feature only if the VOICE
POWER Voice Message System (VMS) is connected to your
System 25.
For instructions on obtaining messages left at your telephone,
see your System Administrator.
Leaving Messages
1
2
3
Listen for dial tone, then press  #   9   2  .q q q
Dial the extension of the other person.
Listen for confirmation tone, then hang up.
NOTE: If you hear fast busy tone instead of confirmation
tone, either the other telephone does not have VMS...

Message Waiting
Your telephone may have a light that tells you when the
attendant or another person in the system has a message for
you. You can turn the message light on and off at any
telephone in your system that has a message light (including
your own).
Turning On Message Lights
1 Listen for dial tone, then press  #   9   0  .q q q
2 Dial the extension number of the other telephone.
3 Listen for confirmation tone, then hang up.
NOTE: If you hear fast busy tone instead of confirmation
tone, either the...

Night Service
When the attendant leaves for the night, the system can be set
so that incoming calls either ring a night bell or are directed to
preassigned telephones.See your System Administrator for the
Night Service access code.
Answering Night Service Calls
1 Lift the handset and listen for dial tone.
2 Dial the Night Service access code.
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