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2–OK
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1–OK
9261
IN
OUT
IN
OUT
IN
OUT
IN
OUT
NET1 NET2 NET1 MON NET2 MON
NET 1 NET 2 PORT
97-15646
Test
Jacks
Troubleshooting
9-5
9161-A2-GH30-30
April 1998
9261 Dual T1 NAM Test Jack Functions
The T1 NAM has four sets of test jacks located on the upper section of the
faceplate. Four nonintrusive access points are also provided.
97-15652
Internal
Circuitry
NET1
In
NET1
Out
TX
RX
NET1
RX
TX
NET2
NET2
In
NET2
Out
NET1
NET2
NET1
MON
NET2
MON
Out
In
In
Out
Test Jack Name Function
NET1 IN
(Network 1 In)
An intrusive test jack that allows a signal to be inserted
towards the Network 1 interface by external test equipment.
NET1 OUT
(Network 1 Out)
An intrusive test jack that interrupts the signal coming from
the Network 1 interface and allows it to be terminated by
external test equipment.
NET1 MON IN
(Network 1 Monitor In)
A monitor jack that noninstrusively monitors the signal going
into the network (a composite of all channels allocated to the
Network 1 interface).
NET1 MON OUT
(Network 1 Monitor Out)
A monitor jack that noninstrusively monitors the received
signal coming out of the network (a composite of all channels
allocated to the Network 1 interface).
NET2 IN
(Network 2 In)
An intrusive test jack that allows insertion of a signal toward
equipment attached to the Network 2 interface by external
test equipment.
NET2 OUT
(Network 2 Out)
An intrusive test jack that interrupts the signal coming from
equipment attached to the Network 2 interface and allows it
to be terminated by external test equipment.
NET2 MON IN
(Network 2 Monitor In)
A monitor jack that noninstrusively monitors the signal going
into the equipment attached to the Network 2 interface.
NET2 MON OUT
(Network 2 Monitor Out)
A monitor jack that noninstrusively monitors the signal
coming out of the equipment attached to the Network 2
interface.