User manual

Chapter 7. Test Menu
61202156L1-1 TDU 120e User Manual 7-5
QRSS Pattern
The QRSS pattern is commonly used to simulate real data in
T1 interfaces. This pattern can be assigned to appear in all
DS0s or only in TST DS0s. When QRSS is set in all DS0s and
one of the network loopbacks previously described is acti-
vated at the far end, a total end-to-end integrity check can be
run without the need for any external test equipment.
When QRSS is assigned to TST DS0s, an integrity check of the
link can be run along with normal data flow. The TST DS0s
are user assigned as part of the DS0 Map.
This sets the pattern for the test and initiates the transmission
of the pattern. The test is terminated by selecting None.
The following patterns are available:
QRSS All DS0s - Generates a QRSS test pattern and inserts
the pattern into all DS0s.
QRSS TST DS0s - Inserts a QRSS pattern in those DS0s
mapped as TST in the currently active map (A or B).
None - Terminates pattern generation.
For an example, perform the following steps:
QRSS always runs at 64K/DS0.
Step Action
1
Select QRSS ALL DS0s.
2
Press
Enter
to record the selection. The TDU 120e starts
to generate a QRSS test pattern and inserts the pattern
into all DS0s.
3
To end the test, select N
ONE
.