DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-1778TONE-BD (Tone-Clock Circuit Pack)
9
TONE-BD (Tone-Clock Circuit Pack)
The Tone-Clock circuit packs house two independent components. The tone
generator provides all the tones needed by the system, and the clock generates
the system clocks for the Time Division Multiplex (TDM) Bus and the LAN Bus,
and aids in monitoring and selecting internal synchronization references.
When resolving errors/alarms on the Tone-Clock circuit pack, the following
sections should also be consulted:
■ Use the
set tone-clock PC
command to establish the tone and
synchronization resources for the system.
■ TONE-PT (Tone Generator)
■ TDM-CLK (TDM Bus Clock)
■ SYNC (Synchronization)
The TN2182 is a combined Tone-Clock-Detector circuit pack which contains a
third independent function not available on the TN768 or TN780. The TN2182
contains 8 ports used for all-purpose tone detection. These ports are called
Enhanced Tone Receiver ports (ETR-PT) and are described in the documentation
for ETR-PT.
Tone-Clock Circuit Packs and System
Reliability Options
The following sections describe the relationship between the various System
Reliability Options and Tone-Clock circuit pack configurations.
Standard Reliability Option
Systems with the Standard Reliability Option (no duplication options) have one
Tone-Clock circuit pack in each port network (PPN and EPN). For the PPN or the
first EPN of a cabinet this is in the A carrier. Cabinets containing a second EPN
MO Name (in
Alarm Log) Alarm Level Initial Command to Run
1
1. UU is the universal cabinet number (1 for PPN, 2 -44 for EPNs). C is the carrier designation (A,
B, C, D, or E).
Full Name of MO
TONE-BD MAJOR test tone-clock UUC short Tone-Clock Circuit Pack
TONE-BD MINOR test tone-clock UUC short Tone-Clock Circuit Pack
TONE-BD WARNING release tone-clock UUC Tone-Clock Circuit Pack
