Page 504 of 536
Chapter 25 — Fault locating and clearing
553-3121-210
Standard 3.0
January 1999
After the fault is corrected, go to
“Final maintenance procedure” on page 534
to completely restore normal operation.
Table 74
Trunk fault indicators
ISDN and DTI faults
Fault locating and clearing procedures for 1.5 Mb ISDN or DTI related faults
are contained in the ISDN DTI/PRI Administration and Maintenance.
Indicator
Possible indications
System messages
ERR090, 220, 270
OVD001—010
TRK messages
Visual indicators
Red LED lit on trunk circuit card
User reports
Users have trouble with a specific trunk
Callers report continuous ringing
Trouble with calls on console and/or telephones
Summary of Contents for Meridian Meridian 1
Page 3: ...553 3121 210 Standard 3 0 January 1999 ...
Page 17: ...xiv Contents 553 3121 210 Standard 3 0 January 1999 ...
Page 97: ...Page 78 of 536 Chapter 8 Installing a new system 553 3121 210 Standard 3 0 January 1999 ...
Page 107: ...Page 88 of 536 Chapter 10 Installing the system ground 553 3121 210 Standard 3 0 January 1999 ...
Page 113: ...Page 94 of 536 Chapter 11 Installing the power supply 553 3121 210 Standard 3 0 January 1999 ...
Page 125: ...Page 106 of 536 Chapter 12 Adding an expansion cabinet 553 3121 210 Standard 3 0 January 1999 ...
Page 209: ...Page 190 of 536 Chapter 18 Connecting the trunks 553 3121 210 Standard 3 0 January 1999 ...
Page 323: ...Page 304 of 536 Chapter 21 Installing Hospitality 553 3121 210 Standard 3 0 January 1999 ...
Page 419: ...Page 400 of 536 Chapter 23 Pre programmed data 553 3121 210 Standard 3 0 January 1999 ...
Page 555: ...Page 536 of 536 Chapter 25 Fault locating and clearing 553 3121 210 Standard 3 0 January 1999 ...