Testing a loopback jack without a smart jack
Issue 4 October 2002
151
555-233-116
Testing a loopback jack without a
smart jack
When the loopback jack is added to a span that does not contain a smart jack, the
span is divided into 2 sections: from the ICSU, or from the MM710, to the
loopback jack and from the loopback jack to the central office (CO). Section 2
includes the short cable from the loopback jack to the dumb block demarcation
point (part of the loopback jack). This cable is the only part of Section 2 that is part
of customer premises wiring. It is not covered in the loopback jack’s loopback
path. See
Figure 30
through
Figure 33
.
Figure 30.
Network interface at “dumb” block for a 120A2 (or later) ICSU
1. Span section 1
2. Span section 2
3. 120A2 (or later) ICSU
4. RJ-48 to network interface
(up to 1000 ft. [305 m])
5. Loopback jack
6. Dumb block (demarcation point)
7. Interface termination or fiber multiplexer (MUX)
8. Central office
Содержание MultiVantage
Страница 6: ......
Страница 14: ...Contents 555 233 116 14 Issue 4 October 2002 A Connector and cable pinout charts 231 IN Index 243...
Страница 24: ...About this book 555 233 116 24 Issue 4 October 2002...
Страница 120: ...DEFINITY LAN gateway system 555 233 116 120 Issue 4 October 2002...
Страница 134: ...Terminal server installation 555 233 116 134 Issue 4 October 2002...
Страница 162: ...ISDN converters and adapters 555 233 116 162 Issue 4 October 2002...
Страница 172: ...Busy tone disconnect equipment for non U S installations 555 233 116 172 Issue 4 October 2002...
Страница 178: ...Call detail recording CDR option settings 555 233 116 178 Issue 4 October 2002...
Страница 188: ...DEFINITY INADS 555 233 116 188 Issue 4 October 2002...
Страница 196: ...Music on hold 555 233 116 196 Issue 4 October 2002...
Страница 224: ...Multimedia communications products MMCX MMCH ESM 555 233 116 224 Issue 4 October 2002...
Страница 242: ...Connector and Cable Pinout Charts 555 233 116 242 Issue 4 October 2002...