Northern Telecom DMS-100 Series Technical Description, Installation, Operation And Maintenance Instructions page 9

PRACTICE 297-2011-202
Basic Features
Page 3-2
3.07 The M5112 Business Set (Fig. 1-1) is characterized by the
following:
(a) There are 15 fixed keys with no LCD indicators, assigned as:
• Release key (1)
•
Hold key (1),
•
Volume up/down key (1), and
•
Dial pad keys (12).
(b) There are 2 fixed keys with associated LCD indicators, assigned
as:
•
Handsfree key (1)
• Mute key (1)
(c) There are ten (10) assignable key/LCD indicator pairs.
3.08 LCD indicators used with DN keys support four (4) key/LCD
states as follows:
FUNCTION
Idle
Ringing (or
"Feature Pending")
Hold
Active
3.09 Every Business Set has the following basic features:
(a) Automatic Prime DN selection: allows the user to select the
prime DN (i.e., the DN assigned to the first key) by going
off-hook to answer a call without pressing a DN key.
(b) On-hook Dialing: allows a call to be dialed by selecting a line
and dialing the number without lifting the handset.
(c) Listen On Hold: can be activated by pressing the hold key
(associated LCD flashing), placing the handset back in its cradle,
and re-selecting the line to be monitored (associated LCD ON).
LCD STATE
Off
Flashing at 60 interruptions
per minute (IPM)
Winking at 120 IPM
On