Maintenance-Object Repair Procedures
555-233-143
8-194
Issue 1 May 2002
g. Error Type 513 — The ATM Crosstalk test failed. The board is either
writing to or reading from a TDM time slot that is not allocated to the board.
1. Test the board (test board UUCSS), and follow the test procedures
suggested for this test. In random tests of a single DSP during low
or high traffic, the same DSP can be tested more than once.
h. Error Types 769 and 770 — are board-degraded alarm errors that result
when the ATM switch is sending corrupted cells or excessive AAL/LAP-D
retransmissions (off-board ATM cell corruption errors). These errors
indicate the detection of a problem in handling ATM cells that are received
from the fiber interface.
Aux Data:
The problem is most likely not on the ATM-EI circuit pack reporting the
errors, but it could be due to one or more of the following reasons:
■
The fiber is not snugly connected to either the board or the ATM
switch.
■
The EPN’s packet bus is corrupting the cells. See
(Aux Data 35 only).
■
The fiber between the ATM switch and the ATM-EI is too long
(greater than 2 km for multimode fiber). Use loopback to see if the
fiber is corrupting the cells.
■
Some other ATM-EI board is not receiving the cells properly.
■
The intervening ATM switch is dropping the ATM cells due to a
shortage of bandwidth, or the S8700 Multi-Connect system is using
more than the subscribed bandwidth.
Error Type 771 — The ATM switch is sending cells with unknown VPI and
VCI address (wrong connection).
1. Ensure that the ATM-EI board address on the ATM switch matches
the ATM-EI (ATM) address on the S8700 Multi-Connect side.
i. Error Types 1024-1151 — These errors represent problems detected by
the ATM-EI board in response to SETUP and ADDPARTY requests from
software.
■
The Error Types and descriptions are in
■
Aux Data values represent port network and angel numbers and are
in
Error
Type
Aux
Data
Description
769
34
Excessive AAL-5 retransmission requests
769
35
Excessive LAP-D retransmission requests
770
25
Uncorrectable ATM cell headers – threshold
771
26
VPI, VCI pair unknown
Summary of Contents for S8700 Series
Page 50: ...Maintenance Architecture 555 233 143 1 26 Issue 1 May 2002 ...
Page 74: ...Initialization and Recovery 555 233 143 3 12 Issue 1 May 2002 ...
Page 186: ...Alarms Errors and Troubleshooting 555 233 143 4 112 Issue 1 May 2002 ...
Page 232: ...Additional Maintenance Procedures 555 233 143 5 46 Issue 1 May 2002 ...
Page 635: ...status psa Issue 1 May 2002 7 379 555 233 143 status psa See status tti on page 7 406 ...
Page 722: ...Maintenance Commands 555 233 143 7 466 Issue 1 May 2002 ...