___________________________________________________________________________________
6 - 28
Installing ETUs (Circuit Cards)
___________________________________________________________________________________
Document Revision 3
Electra Elite IPK II
5.3
COI(4)/(8)-U( ) ETU
5.3.1
Description
The COI(4)/(8)-U( ) ETU is 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)-U( ) ETU has 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)-U( ) ETU 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 6-14 COI(8)-U( ) ETU
Summary of Contents for ELECTRA ELITE IPK II
Page 2: ......
Page 3: ...SYSTEM HARDWARE MANUAL INT 1076 IPK II DOCUMENT REVISION 3 VERSION 2000...
Page 4: ......
Page 6: ......
Page 10: ...THIS PAGE INTENTIONALLY LEFT BLANK...
Page 641: ...SYSTEM HARDWARE MANUAL NECUnified Solutions Inc Document Revision 3...
Page 642: ......