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Circuit Pack Descriptions
7-64 Issue 1 December 1997
23G/23G-U OLIU Circuit Pack Description 7
Purpose of Circuit 7
The 23G/23G-U OLIU circuit pack provides a 1310 nm long reach interface
between an optical OC-12 line and 12 STS-1 electrical signals.
23G/23G-U OLIU Faceplate Indicators 7
The 23G/23G-U OLIU circuit pack faceplate indicators are shown in Figure 7-26.
The red FAULT LED lights on detection of circuit pack hardware failure or by loss
of circuit pack +5 V, −5.2 V, +15 V, and/or −2.3 V DC. The green ACTIVE LED
lights when the circuit pack is active (carrying service).
Figure 7-26. 23G and 23G-U OLIU Circuit Packs
Lucent
S1:1
23G
x
x
x
x
x
OLIU
ACTIVE
FAU LT
Lucent
Lucent
S1:1
x
x
x
x
x
OLIU
ACTIVE
FAU LT
Lucent
Lucent
Lucent
IN
OUT
23G-U
Universal
Optical
Connectors
Lucent
IN
OUT
Lucent
Lucent
Lucent
Lucent
R
ST Connectors
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