Page326 of 544 EuropeanDigital telephones: 3110, 3310, and 3820
553-3011-100 Standard14.00 January 2002
Additional feature keysMessage Waiting lamp key. Each telephone has a red message waiting LED
just above the hold and Rls keys that lights to indicate a message is waiting.
This LED is the primary message waiting indicator and lets you know that a
message is waiting, regardless of whether the telephone has a message
waiting key/lamp pair. You must have Message Waiting allowed Class of
Service. See LD11, Administration (553-3001-311) and Maintenance (553-
3001-511)
If you do assign a message waiting key/lamp pair, there will be two
indications of a message waiting:
•the red Message Waiting LED lights
•the LCD associated with the Message Waiting key blinks
Autodial key. You can assign an Autodial Key that dials the message center
(or voice mail system) to avoid the double indication or have no key/lamp pair
assigned to the message center.
M3110
CPM and primary DN
key-Speaker LED is
not illuminated
N/A Group listening and Pri-
mary DN key - speaker
LED is on when in Group
listening mode.
a. CPM is Call Process M onitor which enable s the user to hear, for examp le, the dial tone in the speaker. Group
listening enables the user to speak through the handset/headset microphone and one or more parties can lis-
ten through the speaker, thus he aring both sides of t he conversation. In Hand sfree mode, the user (o r group of
users) uses both the ha ndsfree microphon e and speaker.
b. Group listening is switched on or off under the program key option *1. (M3820 and M3310 only)
Table 9 8
Speaker Key Function (Continued)
MODEL
Handsfree not
selected at the
switch
Handsfree selected
at the switch -
Group listening off
Handsfree selected at
the switch - Group
listening On