PPP-PT (Control LAN Packet/Port)
Issue 1 May 2002
8-969555-233-142
SCOTCH Synchronous Loop-Around Test (#1275)
NOTE:
This test is destructive.
This test verifies the circuit in the datapath of a ppp call. This test fails if the data
transmitted on the port does not match the data received in the loop-around
mode. Failure of this test indicates a port hardware fault on the circuit pack.
This test aborts if calls are using the port, or if the PPP link associated with the
port is connected. To avoid this, first enter busyout data-module extension, or
busyout port UUCSSpp, or busyout link link#, which will cause every call and
link using the port to be torn down.
2000 ABORT Did not receive circuit pack test response within the allowable time period.
1. If this problem persists, reset the circuit pack (busyout board UUCSS,
reset board UUCSS, and release board UUCSS).
2. If the problem persists, replace the circuit pack.
2012 ABORT Internal system error.
1. Retry the command at 1-minute intervals up to 3 times.
2. Escalate if the problem persists.
2100 ABORT Could not allocate the necessary system resources to run test.
1. Retry the command at 1-minute intervals up to 5 times.
2. Escalate if the problem persists.
FAIL Received tones do not match transmitted tones.
1. Retry command at 1-minute intervals up to 3 times.
2. If the problem persists, see ‘‘TDM-BUS (TDM Bus)’’, ‘‘TONE-PT (Tone
Generator)’’ and Tone Receiver repair procedures.
3. If the problem persists, reset the board (busyout board UUCSS, reset
board UUCSS, and release board UUCSS). Repeat the test.
4. If the problem persists, replace the circuit pack.
PASS Port connections across the TDM bus function properly.
Table 8-407. Test #1285 TDM Loop-Around Test — Continued
Error
Code
Tes t
Result Description / Recommendation
Continued on next page
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