Figure 7-31 Dbm(B)-U( ) And Dbm(E)-U( ) Message Display Boards - NEC ElectraElite 48 System Hardware Manual

Electra Elite
System Hardware Manual
3.7 DBM(B)-U( ) Box and DBM(E)-U( ) Box Message Display
Boards
The DBM(B)-U( ) basic Message Display Board is connected to the
ESI(8)-U( ) ETU to provide a message waiting LED for voice
mailboxes of personnel without a normal telephone. Each board
has eight message waiting LEDs, and up to eight boards can be
installed in the Electra Elite 48 system to support 64 LEDs.
The DBM(E)-U( ) expansion Message Display Board has eight
message waiting LEDs and is connected to the DBM(B)-U( ) or
another expansion board. Each DBM(B)-U( ) basic board can
support up to five expansion boards and 40 additional LEDs.
The total number of LEDs is 384, but the Electra Elite 48 System
can only support up to 200 mailbox indications. Multiple locations
of the same mailbox are permitted. Refer to
DBM(B)-U( ) and DBM(E)-U( ) Message Display Boards
7-32 Maximum Display

Figure 7-31 DBM(B)-U( ) and DBM(E)-U( ) Message Display Boards

Indications.
Issue 6
Figure 7-31
and Figure
7 - 25