Test Pattern; Clr Errors; Insert 511 Errors; Figure 7-3. Clear Errors Screen - ADTRAN TSU LT User Manual

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TSU LT User Manual

Only V.54 loopbacks can be used with fractional T1 since the full T1 stream including the

FDL is not transported to the far end (unless it is a private network).

TEST PATTERN

Sets the pattern for the test and initiates the transmission of the pattern. There are four patterns available.

The test is terminated by selecting

1:8 ALL DS0s

Generates a 1 in 8 pattern in all DS0s.

511 Active DS0s

Generates a 511 test pattern and inserts the pattern into currently active channels.

All Zeros

Generates an all zero's pattern in every channel.

All Ones

Generates an all one's pattern in every channel.

has two functions.

CLR E

RRORS

1. It clears out the 511 error total when you press Enter.

2. It displays a total of the 511 errors. If 511 errors are being received, the display is updated

accordingly. See Figure 7-3.

This menu function is very useful for testing end-to-end integrity of the network. First loop up the far

end TSU LT. Then send a 511 pattern from the local TSU LT. The

used to determine if the link is functioning properly by verifying that no errors are being counted.

When running a 511 pattern test, press the Enter key to insert an error into the 511 pattern.

61202060L4-1

ATTERN

Chapter 7. Test Menu

screen can then be

CLR E

RRORS

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