Electra Elite
Issue 6
System Hardware Manual
5 - 21
S
ECTION
4
T
RUNK
ETU
S
The Electronic Telephone Units described in this section provides a link
between trunks in the Electra Elite 192 system and outside equipment. All
ETUs are installed in the interface slots of the KSU.
4.1
BRT(4)-U10 ETU
4.1.1
Description
The Basic Rate Trunk (BRT) Interface ETU terminates
ISDN Basic Rate Trunk lines and supports four ISDN-BRI
circuits. Each trunk supports two B channels. These
eight B channels can be used for CO trunks with DTMF
signaling. Tip and Ring electrical fuses are provided to
comply with UL 1459 requirements.
This ETU uses an S/T-type interface. When connecting to
a CO, a locally provided Network Termination unit (NT1)
is required. Caller ID is supported.
One BRT ETU provides a maximum of four ISDN circuits
that provide eight B channels to be used as trunks.
Figure 5-12 BRT(4)-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 ...
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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 ...