Instruction manual

Connecting the Control Unit to the Network Interface

Step 5: Inserting the Office Repeater

Plug the office repeater into the left slot of the 551 T1 CSU (see Figure 4-11):

Screws for

option settings

Figure 4-11. Inserting the Office Repeater into the 551 Tl CSU

The front panel has the following:

■ six 310 jacks for in-line access and monitoring of the span line and the

signal monitor unit card

■ two GMT fuses for protection of the local powering circuitry

■ four test points

4-40

Installing the Channel Service Unit