Display-Based Expansion Module (Dba) - Nortel m3900 series User Manual

There are 32 keys on the M3904 and M3905 sets. The M3904 and M3905
sets support one or two KBAs with 22 keys each. With one KBA, the key
numbers are from 1 to 54 with the first key mapping to key number 33.
With two KBAs, the key numbers are from 1 to 76, with the first key on the
second KBA mapping to Key 55.
You cannot combine the KBA with the Display-based Expansion Module
(DBA).
You provision the KBA through SERVORD commands.
Figure 8 "Key-based expansion module accessory" (page 69)
KBA.
Figure 8
Key-based expansion module accessory
To log Calling Party Name Display (CPND) the telephone set has
to "know" the moment when an incoming call either is answered or
unanswered. For this purpose, the set tracks the states of the icons. This
is possible for the keys/icons located on the main set; however, the set is
not able to track states of the keys/icons located on the add-on modules
(that is, the KBA and DBA). As a result, although the set receives and
displays the CPND for the call coming to the attached DBA or KBA, it is
unable to log the CPND.

Display-based Expansion Module (DBA)

The DBA is an optional add-on module for the M3904 and M3905 sets
exclusively. The module attaches to a set to increase the number of
programmable feature keys on the set by 24 for a total of 56 keys.
The DBA has keys 33-56 supporting up to three layers of eight
programmable feature keys. It has eight self-labeled keys with the feature
labels next to the key. A Page fixed-key allows switching between the
Copyright © 2008 Nortel Networks
.
Nortel Communication Server 2100
M3900 Series Meridian Digital Telephones User Guide
NN42200-110 09.01 Standard
20 August 2008
Accessory descriptions 69
shows the