Nortel Networks NN44200-700 manual MPB16-4 board troubleshooting, Hardware troubleshooting

38Chapter 3 Hardware troubleshooting

MPB16-4 board troubleshooting

TroubleAction

The CallPilot Diagnostics tool reports that all or some of the DSPs have failed.

CallPilot starts up, but voice services are not available.

CallPilot works, but the voice quality is low—T1/SMDI configurations only.

Ensure that the release of your board is 05 or later.

If you have more than one MPB16-4 board in the server, ensure that the SCBus cable is present and properly connected.

You have more than one MPB16-4 board on your system. Ensure that the DS30X cable is connected to the correct MPB16-4 board.

•Ensure that the release of the MPB16-4 board(s) is 05 or later.

•Ensure that the SCBus cable is not defective.

CallPilot works, but	Ensure that the PEC of your MPB16-4 board(s) is NTRH20BA.
no voice services are
available—T1/SMDI
configurations only.	Note: The T1/SMDI systems do not work with CallPilot systems
	equipped with NTRH20AB MPB16-4 boards.

The Configuration Wizard fails programming the DSPs.

The system does not read some MPC8 cards, displays DSP errors or hangs at login.

•Ensure that the latest CallPilot PEPs are installed on your system.

•Ensure that no utility (such as Dspmon) that can access the DSPs is running. The Nbhalnda utility (in the CallPilot tools) cannot program DSPs accessed by more than one application.

•Check the MPC8 cards and replace the defective ones.

•Check the MPC8 socket pins on the carrier board and ensure that they are not bent.

•Ensure that the MPC8 cards are plugged in properly. Do not force the MPC8 cards backwards in the slots.

Nortel CallPilot

Troubleshooting Reference Guide

NN44200-700 01.05 Standard

5.026 June 2007

Copyright © 2007, Nortel Networks