Page 494 of 536
Chapter 25 — Fault locating and clearing
553-3121-210
Standard 3.0
January 1999
Symptom:
Problems placing calls on 2500-type telephones and some
trunks
Several users of 2500-type telephones report trouble placing calls. Other
users may report trouble dialing on certain trunks. A Digitone Receiver may
be disabled. Look up all system messages in the Option 11C Compact
software guide and follow the instructions given. If the fault does not clear,
use this procedure.
Constantly observe and look up system messages as you perform this
procedure.
You may need to replace the NTMW01 SSC card.
Possible cause
Action
Disabled Digitone
Receiver
Check for disabled Digitone Receiver TNs by entering
LD 34
STAT
If any are disabled, try to enable them by entering
ENLX c u
(“c u” represents card and unit number)
If the Digitone Receiver will not enable, go to the next possible
cause.
Defective Digitone
Receiver
Test the Digitone Receiver on the NTMW01 SSC card by entering
DISX 0 and then ENLX 0.
If the Digitone Receiver fails the test, replace the SSC circuit card.
If the Digitone Receiver passes the test, go to the next possible
cause.
Telephone problem
Check the telephone with this problem. Make sure that the
class-of-service (DTN) is properly assigned to the telephone and
the telephone is not defective.
Содержание Meridian Meridian 1
Страница 3: ...553 3121 210 Standard 3 0 January 1999 ...
Страница 17: ...xiv Contents 553 3121 210 Standard 3 0 January 1999 ...
Страница 89: ...Page 70 of 536 Chapter 6 Bracing cabinets against earthquakes 553 3121 210 Standard 3 0 January 1999 ...
Страница 97: ...Page 78 of 536 Chapter 8 Installing a new system 553 3121 210 Standard 3 0 January 1999 ...
Страница 107: ...Page 88 of 536 Chapter 10 Installing the system ground 553 3121 210 Standard 3 0 January 1999 ...
Страница 113: ...Page 94 of 536 Chapter 11 Installing the power supply 553 3121 210 Standard 3 0 January 1999 ...
Страница 125: ...Page 106 of 536 Chapter 12 Adding an expansion cabinet 553 3121 210 Standard 3 0 January 1999 ...
Страница 139: ...Page 120 of 536 Chapter 13 Installing the circuit cards 553 3121 210 Standard 3 0 January 1999 ...
Страница 157: ...Page 138 of 536 Chapter 15 Installing and connecting SDI and Ethernet ports 553 3121 210 Standard 3 0 January 1999 ...
Страница 175: ...Page 156 of 536 Chapter 16 Starting up and testing the system 553 3121 210 Standard 3 0 January 1999 ...
Страница 209: ...Page 190 of 536 Chapter 18 Connecting the trunks 553 3121 210 Standard 3 0 January 1999 ...
Страница 323: ...Page 304 of 536 Chapter 21 Installing Hospitality 553 3121 210 Standard 3 0 January 1999 ...
Страница 419: ...Page 400 of 536 Chapter 23 Pre programmed data 553 3121 210 Standard 3 0 January 1999 ...
Страница 455: ...Page 436 of 536 Chapter 24 Changing pre programmed data 553 3121 210 Standard 3 0 January 1999 ...
Страница 555: ...Page 536 of 536 Chapter 25 Fault locating and clearing 553 3121 210 Standard 3 0 January 1999 ...