Monitoring and Testing

Test Jacks

Six test jacks (Figure 5-1) are located on the front panel. The DSU/CSU test jack functions are shown in Figure 5-2 and described in Table 5-9. The Selectable Test Jack branch of the asynchronous terminal menu tree (see Appendix A) allows you to select either Equipment (EQPT) or Network (NET) functionality for the Monitor test jack.

"Procedure

To select either Equipment or Network for the Monitor test jack:

1.From the Main Menu screen, select Control.

2.From the Control screen, select Select Monitor Jack.

3.Select either EQPT (Equipment) or NET (Network) depending on the type of Monitor test jack that you want to implement.

NET MON EQPT

In

In

In

Out

Out

Out

 

 

496-14808

Figure 5-1. Test Jacks

 

EQPT NET

MON

 

 

 

In Out

In

 

 

 

Mon Jack: EQPT

 

Mon Jack: NET

 

 

 

(Selectable)

 

 

TERMINAL

LINE

INTERNAL

LINE

 

EQUIPMENT

NETWORK

RECEIVER

CIRCUITRY

RECEIVER

(DTE)

 

 

 

 

 

 

 

(Selectable)

 

 

 

Mon Jack: EQPT

 

Mon Jack: NET

 

 

EQPT NET

MON

 

 

 

Out In

Out

 

496-14875

Figure 5-2. Test Jack Block Diagram

3162-A2-GB20-40

August 2000

5-17