Issue 6
Electra Elite
5 - 26
Installing Electronic Telephone Units
4.4
COIB(4)-U20 ETU
4.4.1
Description
This ETU can function the same as the COI(4)-U( ) or
COID(4)-U( ) ETU to provide Central Office Interface.
Transmit and receive pad controls have been added to
the COIB(4)-U20 ETU.
Ground Start trunks are not
supported.
When the ETU is set for COID mode, Loop
Start trunks and Caller ID trunks are supported. Caller ID
does not work in the COI mode. Fax CO Branch support
is provided on the COIB(4)-U20 port 4 only.
This ETU contains circuitry for outside ring detection,
holding, dialing, and control functions.
This ETU can provide a CAMA trunk for E911.
CAMA trunk support is provided on COIB(4)-U20 port 3.
When functioning as a COI(4)-U( ) or COID(4)-U( ) ETU
only DTMF signaling is supported. Tip and Ring electrical
fuses are provided to comply with UL 1459 requirements.
Refer to
Figure 5-17 COIB(4)-U20 ETU
.
Figure 5-17 COIB(4)-U20 ETU
Содержание ElectraElite 48
Страница 2: ...SYSTEM HARDWARE MANUAL Stock Number 750376 Issue 6 Series 8000 48 ...
Страница 3: ......
Страница 5: ......
Страница 9: ...THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 10: ...Regulatory Information ...
Страница 11: ......
Страница 51: ...Issue 6 Electra Elite xxxii List of Figures THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 56: ...1st Tab Chapter 1 Introduction ...
Страница 57: ......
Страница 78: ...2nd Tab Chapter 2 System Specifications ...
Страница 79: ......
Страница 102: ...3rd Tab Chapter 3 Hardware Requirements ...
Страница 103: ......
Страница 110: ...4th Tab Chapter 4 Installing the KSU ...
Страница 111: ......
Страница 135: ...Issue 6 Electra Elite 4 24 Installing the KSU THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 136: ...5th Tab Chapter 5 Installing Electronic Telephone Units ...
Страница 137: ......
Страница 256: ...6th Tab Chapter 6 Installing Electra Elite Multiline Terminals ...
Страница 257: ......
Страница 289: ...Issue 6 Electra Elite 6 32 Installing Electra Elite Multiline Terminals THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 290: ...7th Tab Chapter 7 Installing Optional Equipment ...
Страница 291: ......
Страница 344: ...8th Tab Chapter 8 Installing Dterm Series i Equipment ...
Страница 345: ......
Страница 358: ...Electra Elite Issue 6 System Hardware Manual 8 13 Figure 8 15 Removing the Line Panel ...
Страница 363: ...Issue 6 Electra Elite 8 18 Installing Electra Elite IPK and Dterm Series i Equipment Figure 8 21 Installing Base Cover ...
Страница 395: ...Issue 6 Electra Elite 8 50 Installing Electra Elite IPK and Dterm Series i Equipment THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 396: ...9th Tab Chapter 9 Installing Electra Professional Equipment ...
Страница 397: ......
Страница 403: ...Issue 6 Electra Elite 9 6 Installing Electra Professional Equipment THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 404: ...10th Tab Chapter 10 System Maintenance ...
Страница 405: ......
Страница 428: ...11th Tab Appendices ...
Страница 429: ......
Страница 433: ...Issue 6 Electra Elite A 4 Glossary of Abbreviations THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 434: ...SYSTEM HARDWARE MANUAL NEC America Inc Issue 6 Series 8000 48 ...
Страница 435: ......