Figure 5-18 Coid(8)-U10 Etu - NEC Electra Elite 192 Hardware Manual

Electra Elite
System Hardware Manual
4.4 COID(4)/(8)-U10 ETU
4.4.1 Description
The COID(4)/(8)-U10 ETU is the Central Office interface
for Caller ID Detection. This ETU provides circuitry for
outside ring detection, hold, dialing, Caller ID detection,
and control functions.
This ETU can provide a CAMA trunk for Enhanced 911.
The COID(4)/(8)-U10 ETU provides four/eight trunks that
are Loop Start with DTMF signaling only. Tip and Ring
electrical fuses are provided to comply with UL 1459
requirements.

Figure 5-18 COID(8)-U10 ETU

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