Adjuncts and Peripherals
DS1/T1 CPE loopback jack
SI Installation and Upgrades
825
June 2004
Figure 318: Network interface at “dumb” block for a 120A2 (or later) ICSU
Figure notes
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