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ATM-EI (Expansion Interface Circuit Pack)
Issue 1 June 2005 541
o. Error Type 1793: LANHO transmit FIFO overflow error (the transmit FIFO RAM buffers on
the circuit pack overflowed). This most likely indicates a hardware problem on the circuit
pack, because the speed of the LAN/packet bus is much higher than the speed of the link
connected to the port.
1. Test this ATM-EI circuit pack (test board location).
2. If Test #598 fails again, replace the ATM-EI circuit pack.
p. Error Types 2049 and 2050: The ATM-EI is out of lock with the backplane system clock.
1. Test this ATM-EI circuit pack (test board location).
2. If Test #304 fails, follow the repair procedures suggested for this test.
q. Error Type 2305: Too many parity errors on data received from the LAN/packet bus (could
be due to packet-bus problems).
1. Test the ATM-EI circuit pack (test board location).
2. If Test #598 fails, follow the repair procedures suggested for this test.
3. If the test passes, look for and resolve any PKT-BUS (packet bus) alarms/errors.
4. If there are no PKT-BUS errors and the problem persists, escalate the problem.
Error Type 2309: The packet-interface chip (LANHO) is malfunctioning.
5. Test the ATM-EI circuit pack (test board location).
6. If Test #598 fails, follow the repair procedures suggested for this test.
r. Error Type 2561: ATM-EI 2-way transmission failure (circuit pack is having problems
creating connections to other PNs in the system).
1. Test the ATM-EI circuit pack (test board location).
2. Follow the repair procedures suggested for Test #241.
s. Error Types 2817 and 2818: A DSP test failure detected along the circuit path of the
ATM-EI circuit pack.
1. Test the ATM-EI circuit pack (test board location).
2. Follow the repair procedures suggested for Test #1258.
Error Type Description Aux Data indicates
2817 DSP test failure The Aux Data field contains the following
information about the failed DSPs:
X is the number of talker DSPs
Y is the number of listener DSPs
Z is the number of echo-cancelling DSPs
2818 One or more DSPs failed DSP number that has failed