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Table 4-1. Key, Jumper, and Switch Settings
Number Setting
1
2
3
Position D
4
5
6
7
Low
High
Description
Loop Mode Key: Press the key switches through the
following operating modes: Normal operation, Digital
loop, Remote loop. The unit enters loop mode when the
distant modem gets switched to remote loop.
Clock Source
Internal
Remote
External
Interface Speed
1.544 kbps
1544
All other settings are not applicable.
Processor Connector
Not used. Do not install any jumpers!
For factory use only. Do not install any jumpers!
Fiber Optic Output Power
CHAPTER 4: Setup
11
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