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Page 206 of 302
Overview
Faceplate maintenance display codes
553-3001-204 Preliminary 0.10 August 2000
ITG Line card 2.0 maintenance
This section provides information on maintenance functions of the Meridian
Internet Telephony Gateway (ITG) Line 2.0 card. Where reference is made to
MAT/OTM, the latest version, MAT 6.67.07/OTM 1.0 (or later), is assumed.
Note: Check the M1 ESD website for information on the latest software,
firmware and application releases. Refer to Procedure 20 on page 152 to
guide you through the website.
The ITG Line 2.0 card maintenance display provides the diagnostic status of
the card during power-up, its operational state when in service, and error
information on the functional state of the card. Table 30, "Faceplate
maintenance display codes," on page 207 lists the normal and fault codes.
During power-up, the card performs multiple self-tests, including an internal
RAM test, ALU test, address mode test, Boot ROM test, timer test, and
external RAM test. If any of these tests fail, the card will enter a maintenance
loop, and no further processing will be possible. A failure message is printed
on the display to indicate which test failed. For example, if the timer test fails,
"F:05" is displayed.
If any of the other tests fail (up to and including the EEPROM test), a message
is displayed for three seconds. If more than one test fails, the message
displayed will indicate the first failure. If verbose mode has been selected (by
the test input pin on the backplane), the three second failure message is not
displayed.
If the maintenance display shows a persistent T:20 indicating an ITG software
failure and if this occurs after the card was reset during a software download
procedure, call your Nortel Networks technical support for assistance in
attempting to download new software onto the card
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