Avaya S8700 Maintenance Manual page 602

Maintenance Object Repair Procedure
One-Way Span Test (#1214)
This test is destructive.
The One-Way Span test allows 1-way span testing to and from remote test
equipment or another Avaya communications system. This tests all circuitry and
facilities from the local DS1 board to the remote test equipment or other Avaya
communications system.
The test is destructive and can only be initiated by a system technician demanded
test ds1-loop UUCSS one-way-span-test-begin command.
Every trunk or port on the UDS1 Interface circuit pack must be busied out using
the system technician busyout board command before running the One-Way
Span test.
The One-Way Span test has the UDS1 Interface circuit pack transmit a framed
3-in-24 test pattern and attempt to receive and verify the pattern. If the UDS1-BD
board receives a framed 3-in-24 test pattern sent from another Avaya
communications system or test equipment at the far end of the DS1, it begins
counting bit errors within the received pattern.
The status of the One-Way Span test is available in the hardware error log via
Error Type 3902. Several distinct Aux values give the user information of the
status of the test.
The list measurements ds1 summary command will display the length of time
the test has been running (Test Duration field) and number of bit errors
detected (Loopback/Span Test Bit-Error Count field). If the test pattern
is being sent cleanly over the span from the far end, the number of bit errors
should be very low. The Test Duration field will show 0 until the test pattern is
received from the far-end. Upon receiving the test pattern, the board will begin
calculating the test duration and number of bit errors. The command will also
display the Loopback/Span test executing (Test field), the type of pattern
generated for the Loopback/Span test (Pattern field), and whether the pattern
(i.e., 3-in-24 Pattern) is synchronized (Synchronized field).
To terminate the test, enter the test ds1-loop UUCSS end-loopback/span-test
command or the release board command. Using the release board command
will restore every trunk or port on the UDS1 Interface circuit pack to the in-service
state.
8-1298 Issue 1 May 2002 555-233-142