Test Jacks - Paradyne 3172 Operator's Manual

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.
NET
Out
TERMINAL
EQUIPMENT
(DTE)
NET
In
Test Jack Name
NET In
(Network In)
NET Out
(Network Out)
EQPT MON In
(Equipment Monitor In)
EQPT MON Out
(Equipment Monitor Out)
NET MON In
(Network Monitor In)
NET MON Out
(Network Monitor Out)
3170-A2-GB20-10
EQPT
MON
In
LINE DSU/CSU
RECEIVER CIRCUITRY
EQPT
Port 1
MON
Port 2
Out
Figure 4-2. Test Jack Block Diagram
Table 4-7
Test Jack Functions
A break-in test jack that allows a signal to be inserted toward the network by
external test equipment. The signal is inserted on the DTE side of the E1 DSU/CSU.
A break-in test jack that interrupts the signal coming from the network and allows it
to be terminated by the external test equipment.
A monitor jack that nonintrusively monitors the signal going into the terminal
equipment (DTE).
A monitor jack that nonintrusively monitors the signal coming out of the terminal
equipment (DTE).
A monitor jack that nonintrusively monitors the transmitted signal going into the
network. This is a composite of the channels allocated to the DTE and data ports.
A monitor jack that nonintrusively monitors the received signal coming out of the
network. This is a composite of the channels allocated to the DTE and data ports.
March 1996
Figure 4-1. E1 DSU/CSU Test Jacks
LINE
RECEIVER
Port 3
Port 4
Function
Maintenance
NET
MON
Out
NETWORK
NET
MON
In
495-14588-02
4-13