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This portable, cordless telephone is designed to help you use the many features of the
AT&T DEFINITY Communications System Generic 1, Generic 2, and Generic 3,
System 75, and System 85.
In order to provide you with the freedom of mobility, the MDC 9000 is not connected
physically (by a line cord or wire from the handset) to the DEFINITY system (or
System 75 or System 85). Instead, the MDC 9000 handset communicates by way of a
radio link to its radio base, which connects to the telephone system.
See Figure 1 to view the handset and Figure 2 to see its charging base. Then read
the explanations of this telephone’s many features following the figures.
MDC 9000
Ext.
ON
RANGE
P STAT
MSG
BATT
On/Off Hold
1
2 3
ABC
DEF
4 5 6
JKL MNOGHI
7 8 9
TUV
WXYZPQRS
*
0
#
Oper
ON
RANGE
P STAT
MSG
BATT
Handset Display
User Instructions
Antenna
Dual Purpose
Outside Line/
Programmable
Buttons (five)
Battery Charging
Contacts
Earpiece Volume
Control Switch
Hold Button
Feat (Feature) Button
Trans
(Transfer) Button
Conf
(Conference)
Handset Extension Label
14
HANDSET
Stat
Stat (Status) Button
Headset Jack
Conf Trans Feat
To Update Display
Press
Stat
(pull-up)
Directory Card
(behind)
On/Off Button
Button
Headset
On/Off Button
Drop
Drop Button
Dial Pad
Figure 1. MDC 9000 Telephone, Top View of Handset,
including Enlarged Display Area
2