Sli(4)/(8)-U( ) Etu; Description; Figure 5-47 Sli(8)-U( ) Etu - NEC ElectraElite 48 System Hardware Manual

Issue 6
5 - 84
5.8

SLI(4)/(8)-U( ) ETU

5.8.1

Description

The SLI(4)/(8)-U( ) ETU.has a built-in ringing generator
(RSG) and provides an interface for Single Line Telephones
or analog Voice Mail ports.
This ETU also provides circuitry for loop status detection,
talk battery, sending ringing signals, message waiting, and
loop disconnect for dial pulse signal detection.
The PBR circuit on the
ETU is required with Voice Mail or DTMF Single Line
Telephones.
MBD-U10 Unit

Figure 5-47 SLI(8)-U( ) ETU

Installing Electronic Telephone Units
Electra Elite
( )
or the PBR( )-U