Figure 5-42 Sli(8)-U10 Etu - NEC Electra Elite 192 Hardware Manual

Electra Elite
System Hardware Manual
5.7 SLI(4)/(8)-U10 ETU
5.7.1 Description
The SLI(4)/(8)-U10 ETU is the interface for Single Line
Telephones and for analog voice mail units. It has a
built-in ringing generator (RSG) and supports 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 in the CPUB( )-U10 ETU or the
PBR( )-U10 ETU is required with Voice Mail or DTMF
Single Line Telephones.

Figure 5-42 SLI(8)-U10 ETU

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