Telephone Buttons and Indicators
System Speed Dial Numbers
System Extension Numbers
Ringing Patterns
Lights
Calling Features
Auto Dial Numbers
Making a Call
®
2-3
4
4
5
5
6
6
7
Making a Conference Call
Putting a Call on Hold
Transferring a Call
Answering a Call
Joining a Call
Using Music Access
7
7
7
8
8
8
Help!
If you have problems with your phone, contact your System Manager.
If the problem is not solved, in the continental U.S. please call our
toll-free Helpline, available 24 hours a day, at 1 800 628-2888.
Outside the continental U.S., contact your AT&T Representative or
local Authorized Dealer.
[MLS-18D® and MLS-12D® only]
When making a call, shows the number dialed and
duration of call. When receiving an intercom call, shows
the number of the extension calling. When not using the
phone, displays today’s date and time. (You can adjust
the display contrast on the MLS-18D–see “Volume Control Buttons” below right.)
Calling Feature Buttons
[MLS-18D, MLS-12D, and MLS-12® only]
These four buttons, from left to right, are pressed to use
the following features:
and
Recall,
Line Buttons
Press to make or answer outside calls. Green and red
lights next to each button show what is happening on the
line. See “Lights,” p. 5.
Intercom Buttons
Press either button to make or answer an inside
(intercom) call to another extension.
Feature Button
[Labeled “Feat" on MLC-6, MDC 9000, and MDW9000]
Press to dial Speed Dial numbers (p. 4); to store Auto Dial
numbers (p. 6); and (on MLS-6®, MDC 9000, and MDW
9000 phones only) to access the Last Number Radial,
Recall, and Conference Drop features (p. 6).
Conf (Conference) Button
Press to add other parties to your call (p. 7).
Transfer Button
[Labeled “Trans” on MLC-6, MDC 9000, and MDW 9000]
Press to transfer an outside call to another extension (p. 7).
Hold Button
Press to put a call on hold (p. 7).
Privacy, Last Number Redial,
Conference Drop.
See p. 6.
Auto Dial Buttons
[MLS-18D, MLS-12D, and MLS-12 only]
Stores outside or intercom Auto Dial numbers for dialing
with one touch. See p. 6.
Spkr (Speaker) Button
On MLS-18D, MLS-12D, and MLS-12 phones, press to
dial and speak on your phone without lifting the handset.
When you press [
phone come on (indicated by the lights next to the [
and [
Mic
answers, you can speak without lifting the handset. (On
the MLS-6 phone, press to dial without lifting the handset;
when the party answers, lift the handset to speak.)
Speakerphone Hint:
operation, leave the microphone on all the time (press
[
Mic
] if the light next to the button is off). When you receive
a voice-signaled call (you hear a beep), the person calling
can talk to you over your phone’s speaker; simply begin
speaking to have a hands-free, two-way conversation.
Spkr
], both the speaker and the micro-
] buttons). When the party on the other end
For more convenient speakerphone
Spkr
]
Mic (Microphone) Button
[MLS-18D, MLS-12D, and MLS-12 only]
Press [
Mic
] to turn your microphone on and off. When the
green light next to the button is on, the microphone is on
and the person on the other end of a call can hear you. To
answer calls without lifting the handset, leave the microphone on (see “Speakerphone Hint” above). On a speakerphone call, press [
Mic
] to mute your voice.
Message Light
Flashes to show current settings while changing option
settings.
Volume Control Buttons
Press to decrease ( ▼ ) or increase ( ▲ ) the volume of the
ringer, speaker, and handset.
■
To adjust ringer volume, while phone is idle and handset is on the phone, press ▼ or ▲ .
■
To adjust speaker volume, press
ing to a call through the speaker.
■
To adjust handset earpiece volume, press
while listening to a call through the handset.
■
To adjust display contrast on an MLS-18D phone,
when the phone is idle and the handset is on the
phone; press [
brightness, or ▲ to increase the brightness.
✶
]; then press ▼ to decrease the
▼
or ▲ while listen-
▼
or
▲
2
3
System Speed Dial Numbers
Record System Speed Dial numbers—programmed only at extension 10—in the boxes below.
To dial a System Speed Dial number:
Press [
Feature
] followed by the Dial Code.
Dial
Code
20
21
22
23
24
25
26
27
28
29
30
NameCode
DialDial
Name
Code
4060
4161
42
43
4464
4565
46
4767
48
4969
50
315171
325272
335373
34
5474
355575
365676
37
38
57
58
3959
Name
62
63
66
68
70
77
78
79
System Extension Numbers
Use the boxes below to record the extension number assignments in your system.
To dial an extension number:
Example:
Ext
to call extension 11, press [
Name
10
11
12
13
14
15
MLS-18D, MLS-12D, MLS-12, MLS-6, and PARTNER are registered trademarks of AT&T.
Press [
Intercom
Intercom
] [ 1 ] [ 1 ].
Ext
16
17
18
19
20
21
4
] followed by the extension number.
Name
Ringing Patterns
You can tell the type of call coming in by the way the phone rings:
If Unique Line Ringing is active, all incoming outside calls on MLSmodel phones ring as follows:
■
Line 1—pattern described above.
■
Line 2—ascending tone with dip.
■
Line 3—descending tone.
Line 4—mixed tone.
■
Outside calls transferred to your extension ring with the appropriate
Unique Line Ringing pattern followed by two beeps.
Inside Call
Transferred Call
Lights
Red
(top) light shows what is happening on the line at ANOTHER
extension.
Green
Steady on:
Off
(bottom) light shows what is happening on the line at YOUR
extension.
Line is busy.
(off continuously): Line is idle, available for use.
Flash
Alternating Red/Green Flash
Wink
Flutter
(long on, long off): Call is ringing on the line.
(red on, green on, red on,
green on): Appears at all extensions in a conference or joined call.
(long on, short off): Call is on hold (anyone with line can pick up).
(short on, short off): Conference call is on hold.
5
Calling Features
To use these features on an MLS-18D, MLS-12D, or MLS-12 phone, press the calling feature
Feature
button. To use on an MLS-6, MLC-6, MDC 9000, or MDW 9000 phone, press [
2-digit code.
] plus the
Feature
Privacy
Last Number
Redial
Recall
Conference
Drop
How to Use
on MLS-6,
MLS-18D, MLS-12D,
MLC-6, MDC 9000,
or MDW 9000
Not Available
Feature
Feature
Feature
] [ 0 ] [ 5 ]
] [ 0 ] [ 3 ]
] [ 0 ] [ 6 ]
Press [
Press [
Press [
How to Use on
and MLS-12
Press [ Privacy ]
Press again to turn off
Press [ Last Num ]
Press [ Recall ]
Press [ Drop ]
Description
Prevents other people with the
same line from joining your
calls. A steady green light next
to [
Privacy
] shows that Privacy
is on.
Redials the last outside num-
ber you dialed. Useful for
redialing a busy number.
“Recalls” a dial tone. If you are
not on a PBX or Centrex, use
Recall to end a call without
hanging up–you will get a dial
tone and can then make
another call. Othenvise, use
Recall to get the PBX/Centrex
dial tone.
Drops the last party added to a
conference call.
Auto Dial Numbers
To store an extension number or outside number for one-touch dialing:
Press [
Feature
1.
Press a programmable Auto Dial button (see p. 3).
2.
Press left [
3.
20 digits, including special functions, see box below.
(To set up an Auto Dial button for group paging, press [ Intercom ] [ ✶ ] [ 7 ]; for Music
Access, press [
To store additional Auto Dial numbers, repeat Steps 2 and 3.
4.
5.
Press [
] [ 0 ] [ 0 ].
Intercom
] and dial the extension number, or dial the telephone number up to
Intercom
] [ 1 ] [ 5 ].)
Feature
] [ 0 ] [ 0 ] when you are done.
To insert a...
Pause (1.5 seconds)
Recall
Stop
Touch-Tone Enable
Press...
[ Hold ]
[
Spkr
]
[
Mic
]
[ Transfer ]
6
Outside:
Line ] +
[
Phone Number
Inside—Ringing:
[ Intercom ] +
Extension Number
Inside—voice-signaling:
Intecon ] + [ ✶ ] +
[
Extension Number
[ Intercom ] + [ ✶ ] [ 7 ]
Telephone or Extension
Number + [ Conf ] +
Telephone or Extension
Number + [ Conf ]
To Drop:
[ Drop ] (MLS-18D, MLS-
12D, and MLS-12) or
[ Feature ] [ 0 ] [ 6 ] (MLS-6
MLC-6, MDC 9000, and
MDW 9000)
Making a Call
To call an outside party:
1.
Press an idle (not lit) line button.
2.
Lift the handset.
3.
Dial the telephone number.
To call an inside party (another extension):
1.
Press an idle (not lit) [
2.
Lift the handset.
3.
To ring the extension, dial the two-digit extension number, (or to voice
signal an MLS phone’s speaker, dial [
Intercom
] button.
✶
] plus the extension number).
NOTE: If you lift the handset without pressing a button, you get the first
available line or the intercom, depending on your phone’s automatic line
selection.
To page all extensions with MLS-model phones:
1.
Press an idle (not lit) [
2.
Dial [
✶
] [ 7 ]. When you hear a beep, speak into the handset.
Intercom
] button.
Your voice is heard on all MLS phone speakers. If a user picks up, the
page becomes an intercom call to that user.
Making a Conference Call
To add parties to a call (max. 2 parties plus you):
1.
Call the first party (can use Speed Dial or Auto Dial buttons).
2.
After the first party answers, press [
3.
Press an idle line button and call the second party (or press
Intercom
[
4.
After the second party answers, press [
] and dial an extension number to add an inside party).
Conf
].
Conf
] again.
You are connected with both parties. The lights at all extensions in the
conference flash red and green.
To drop the last party added to the call:
On MLS-18D, MLS-12D, and MLS-12 phones: Press [
Drop
].
On MLS-6, MLC-6, MDC 9000, and MDW 9000 phones: Press
Feature
] [ 0 ] [ 6 ].
[
NOTE: You cannot add more than 2 other parties, transfer a conference
call, or join a conference call.
Putting a Call on Hold
To Hold:
[ Hold ]
To Pick Up:
[ Line ]
[ Transfer ] +
Extension Number
To put an outside or intercom call on hold:
1.
Press [
Hold
].
To pick up a held call:
1.
Press the held line button.
2.
Lift the handset.
Transferring a Call
To pass a call to another extension:
While active on the call, press [
1.
The call is put on hold and you hear intercom dial tone.
2.
Dial the extension to which you want the call transferred.
3.
When someone answers, anounce the call, then hang up.
If no one answers or the call is refused, to reconnect to the caller, press
the line button next to the winking green light.
7
Transfer
].
[ Line ] or
[ Intercom ]
[ Line ]
Answering a Call
1.
Press the [
Lift the handset. (If you lift the handset without first pressing a
2.
Line
] or [
Intercom
] button next to the flashing light.
line button, you are connected to the line that has been ringing
the longest time.)
To answer a voice-signaled call (your phone beeps):
If the microphone is on, begin speaking (if not press [
1.
Mic
] or lift
the handset).
Joining a Call
To connect yourself to an outside call being conducted at
another extension:
Press the [
1.
2.
Lift the handset.
Line
] button next to the steady red light.
NOTE: you cannot join an intercom call, a conference call, or a call at an
extension with Privacy turned on.
Using Music Access
To activate Music Access over the speaker of an idle MLS
phone,
You hear music over the phone’s speaker.
To deactivate, press [
press [
Intercom
Spkr
] [ 1 ] [ 5 ].
].
To activate Music Access through the handset of any system
phone,
lift the Handset and press [
Intercom
] [ 1 ] [ 5 ].
You hear music through the phone’s handset.
To deactivate, hang up the handset.
8
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