Electra Elite
Issue 6
System Hardware Manual
5 - 25
4.2
COI(4)/(8)-U10 ETU
4.2.1
Description
The COI(4)/(8)-U10 ETU provides the Central Office
interface. The COI ETU contains circuitry for outside ring
detection, holding, dialing, and control functions.
This ETU can provide a CAMA trunk for Enhanced E911.
The COI(8)-U10 ETU provides identical circuits to serve
up to eight CO trunks that can be any combination of
Loop Start or Ground Start with DTMF signaling. The
COI(4)-U10 is for Loop Start trunks with DTMF signaling
only. ETU Tip and Ring electrical fuses are provided to
comply with UL 1459 requirements. Refer to
Figure 5-14
COI(8)-U10 ETU
.
Figure 5-14 COI(8)-U10 ETU
Summary of Contents for Electra Elite 192
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Page 10: ...Regulatory Information ...
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Page 52: ...Issue 6 Electra Elite xxxii List of Tables THIS PAGE INTENTIONALLY LEFT BLANK ...
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Page 74: ...Issue 6 Electra Elite 1 22 Introduction ...
Page 96: ...Issue 6 Electra Elite 2 22 System Specifications ...
Page 104: ...Issue 6 Electra Elite 3 8 Hardware Requirements THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 213: ...Electra Elite Issue 6 System Hardware Manual 5 67 Figure 5 39 FMS 8 U10 ETU ...
Page 336: ...Issue 6 Electra Elite 7 54 Installing Optional Equipment THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 368: ...Issue 6 Electra Elite A 4 Glossary of Abbreviations THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 369: ...SYSTEM HARDWARE MANUAL NEC America Inc Issue 6 Series 6000 192 ...