ATM-EI (Expansion Interface Circuit Pack)
Issue 1 May 2002
8-213555-233-143
Packet Interface Test (#598)
This test is nondestructive and attempts to send a data packet from the TN1655
Packet Interface circuit pack through any ATM PNC Expansion Interface circuit
packs. The path the data packet takes depends on the location of the ATM PNC
Expansion Interface circuit pack being tested and whether the system has
duplicated port-network connectivity.
The Packet Interface Looparound test checks the packet-bus interface circuitry on
this board. The on-board LANHO chip sends a data stream to the bus, retrieves it
back, and checks for its consistency. If the data is consistent, the test passes;
otherwise, it fails. The test aborts if the specified EPN’s packet bus has an active
minor alarm or is out of service. This test runs as a part of initialization, periodic or
scheduled error analysis, and demand-test sequences. Figure 8-4 shows a
schematic of the test.
Figure 8-4. Packet Interface Test (#598)
Table 8-88. Packet Interface Test (#598)
Error
Code
Tes t
Result Description / Recommendation
2000 ABORT Response to the test request was not received within the allowable time period.
1. Retry the command at 1-minute intervals up to 3 retries.
2. If the test fails repeatedly, attempt to reset the circuit pack.
3. If the test continues to fail, replace the circuit pack.
2012 ABORT Internal system error
2100 ABORT Could not allocate the necessary system resources to run this test.
1. Retry the command at 1-minute intervals up to 5 times.
Continued on next page
PNC mode
iodfchip AWF 040699
LANHO
chip
LAN bus
(PN X)
ATM
circuit
pack
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