Coid(4)/(8)-U( ) Etu; Description - NEC ElectraElite 48 System Hardware Manual

Issue 6
5 - 34
4.6

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

4.6.1

Description

The COID(4)/(8)-U( ) ETU provides 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 E911.
The COID(4)/(8)-U( ) 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 5-21 COID(8)-U( ) ETU
Installing Electronic Telephone Units
Electra Elite