AT&T 3.0 manual IN-2Maintenance and Troubleshooting

Index

Cold start, 1-21Control unit

housing

installing Release 2.0 or earlier, 5-34- 5-36

installing Release 2.1 or later, 5-30- 5-33

removing, 1-15- 1-16

power supply problems, 4-2- 4-11powering down the system, 4-1- 4-2processor problems, 4-12- 4-33ring generator, 4-4- 4-7

CSU Ioopback test error messages, 4-79procedure, 4-72- 4-78restoring module, 4-80results, 4-78summary, 4-71- 4-72

D

Dial tone, 3-8

E

Error codes, 2-5- 2-18Error events, 4-81- 4-83Error log

checking, 1-23– 1-24,2-3- 2-5interpreting error codes, 2-5- 2-1 8 overview, 2-1

printing, 2-2- 2-3trouble accessing, 1-24

Error messages

board memory programming failure, 4-70

flash ROM won’t erase, 4-69incorrect slot, 4-70memory card, 4-66- 4-69memory erase, 4-69

Error threshholds, 2-2

ESF T1 CSU DTE Ioopback test, 4-71- 4-79

Extension

busy-out, 5-13- 5-15maintenance-busy status, 5-9- 5-11restoring, 5-18- 5-20

F

Feature module, replacing diagram, 4-32procedure, 4-31- 4-33

Forced installation

codes displayed during, 4-25- 4-28error conditions during, 4-25- 4-29summary, 4-20

Frigid start, 1-22,4-17- 4-19Front cover, Release 2.1 or later,

1-15- 1-16,

H

Housing installing

Release 2.0 or earlier, 5-34- 5-36Release 2.1 or later, 5-30- 5-33

removing, 1-15- 1-16Hybrid/PBX mode, 1-27

IN–2Maintenance and Troubleshooting