Data port diagnostics menu, Data port diagnostics menu -21 – Verilink DIDCSU 2912 (880-502646-001) Product Manual User Manual

Page 61

DIDCSU T1 Version

Verilink DIDCSU 2912 User Manual

3-21

Data Port

Diagnostics

For diagnostics on the data port, enter “P” to access the Data Port
Diagnostics Menu. Commands on this menu activate or deactivate
loops from both the data equipment to the DIDCSU data port and
back to the data equipment, and from the network to the data port
and back to the network.

Figure 3-13 Data Port Diagnostics Menu

Table 3-10 Data Port Diagnostics Menu Parameters

Command

Description

Options

Data Port Loopback (DPL): This option tests the channels assigned to the

data port (not the entire T1 bandwidth). The remaining channels, using

the circuit builder function, are not affected. This is a bi-directional loop

(toward the DTE and network).

1) DEACTIVATE

2) ACTIVATE

Sends an industry standard CCITT V.54 loop request code toward the far

end DSU. This should result in a loopback affecting only those timeslots

assigned through the

Circuit Build Menu

to this data port.

1)LOOP DOWN

2)LOOP UP

Test Pattern: Use this option to select one of the following test patterns.

Note that patterns are always transmitted toward the net, not the DTE.

• None: This option indicates that no test pattern will be used.

• QRSS: Use Quasi-Random Signal Sequence that limits the signal to a

maximum of 15 zeros that can be transmitted sequentially. These

signals contain a medley of 20-bit words (except for more than 15

consecutive 0s). It repeats every 1,048,575 bits. Also, it contains high

density sequences and low density sequences, and sequences that

change from low density to high density and vice versa (as defined by

ANSI T1.403).

1) NONE

2) QRSS

Reset Test Counter: Use this option to reset the error counter back to 0.

At the start of a test, this counter is automatically reset.

Exit the

Data Port Diagnostics Menu

-- DIDCSU 2912 DATA PORT DIAGNOSTICS MENU --

Data Port 1 Data Port 2

Cable PRESENT PRESENT

Cable PRESENT PRESENT
DPL Loopback DISABLE DISABLE

DPL Loopback DISABLE DISABLE

DPL Loopback DISABLE DISABLE
Test Pattern NONE NONE

Test Pattern NONE NONE

Test Pattern NONE NONE
Test Error Counter 0 0

Test Error Counter 0 0

Dn) Data Port Loop Tn) Test Pattern

Dn) Data Port Loop Tn) Test Pattern
Fn) Send V.54 Loop Code En) Reset Test Counter

Fn) Send V.54 Loop Code En) Reset Test Counter

Fn) Send V.54 Loop Code En) Reset Test Counter
X) exit this screen

X) exit this screen

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