Paradyne 317x E1 1. E1 DSU/CSU Test Jacks, 2. Test Jack Block Diagram, Test Jack Functions

Maintenance

Test Jacks

Six test jacks are located on the front panel

(Figure 4-1). These test jacks allow for two break-in tests (Network In and Network Out) and four monitor access points (Equipment Monitor In, Equipment Monitor Out, Network Monitor In, and Network Monitor Out) to the E1 DSU/CSU.

Test jack functions are shown in Figure 4-2 and described in Table 4-7.

EQPT

NET MON

Out In

Figure 4-1. E1 DSU/CSU Test Jacks

NET

MON

Out

TERMINAL EQUIPMENT

(DTE)

LINE

RECEIVER

DSU/CSU

CIRCUITRY

LINE

RECEIVER

NETWORK

NET	EQPT				NET
		Port 1		Port 3
In	MON		Port 2 Port 4		MON
	Out				In	495-14588-02

Figure 4-2. Test Jack Block Diagram

	Table 4-7
	Test Jack Functions
Test Jack Name	Function
NET In	A break-in test jack that allows a signal to be inserted toward the network by
(Network In)	external test equipment. The signal is inserted on the DTE side of the E1 DSU/CSU.
NET Out	A break-in test jack that interrupts the signal coming from the network and allows it
(Network Out)	to be terminated by the external test equipment.
EQPT MON In	A monitor jack that nonintrusively monitors the signal going into the terminal
(Equipment Monitor In)	equipment (DTE).
EQPT MON Out	A monitor jack that nonintrusively monitors the signal coming out of the terminal
(Equipment Monitor Out)	equipment (DTE).
NET MON In	A monitor jack that nonintrusively monitors the transmitted signal going into the
(Network Monitor In)	network. This is a composite of the channels allocated to the DTE and data ports.
NET MON Out	A monitor jack that nonintrusively monitors the received signal coming out of the
(Network Monitor Out)	network. This is a composite of the channels allocated to the DTE and data ports.

3170-A2-GB20-20 December 1996 4-13