Maintenance-Object Repair Procedures
555-233-143
8-1682 Issue 1 May 2002
TONE-PT (Tone Generator)
NOTE:
Replacing the IPSI or Tone-Clock circuit pack requires a special procedure
which is described in ‘‘TONE-BD (Tone-Clock Circuit)’’ on page 8-1659.
That section also describes the LED display for this board.
The tone generator resides on the IPSI or Tone-Clock circuit pack and provides all
system tones such as dial tone, busy tone, and so on. If an active tone generator
fails, its port network may not have tones (see the ‘‘Tone Generator Transmission
Test (#40)’’ on page 8-1686. For instance, a user may go off-hook and hear no
dial tone. This problem will affect only users on the same port network where the
faulty IPSI or Tone-Clock circuit pack resides. The system will be able to process
certain type of calls (that is, internal calls will succeed while outgoing calls will
not).
The IPSI or Tone-Clock circuit pack also provides the clocks for the system and
can serve as the synchronization reference. Therefore, when resolving alarms on
the IPSI or Tone-Clock circuit pack, use the ‘‘TDM-CLK (TDM Bus Clock)’’,
‘‘SYNC (Port-Network Synchronization)’’, and ‘‘TONE-BD (Tone-Clock Circuit)’’
maintenance documentation.
See ‘‘TONE-BD (Tone-Clock Circuit)’’ on page 8-1659 for a discussion of the
relationship of Tone-Clock circuit packs with the various reliability options.
MO’s Name (in
Alarm Log) Alarm Level
Initial SAT Command To
Run
1
1. UU is the universal cabinet number (1–44 for CSS PNC, 1–64 for ATM PNC). C is the carrier
designation (A, B, C, D, or E).
Full Name of MO
TONE-PT MAJOR test tone-clock UUC short Tone Generator
TONE-PT MINOR test tone-clock UUC short Tone Generator
TONE-PT WARNING release tone-clock UUC Tone Generator
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