Lucent Technologies Release 7 User Manual
DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-1781
TONE-BD (Tone-Clock Circuit Pack)
9
Manual EPN Tone-Clock Interchange
In an EPN with duplicated Tone-Clock circuit packs, one circuit pack is always
preferred over the other. For the first Port Network in a cabinet, this is the
Tone-Clock circuit pack in carrier A. If a second Port Network is configured in a
cabinet, its preferred Tone-Clock is the one in carrier E. The intention is that the
preferred circuit pack be active whenever it is healthy. Once a failing preferred
Tone-Clock circuit pack has been replaced or repaired, the system will make it
active as soon as possible.
preferred over the other. For the first Port Network in a cabinet, this is the
Tone-Clock circuit pack in carrier A. If a second Port Network is configured in a
cabinet, its preferred Tone-Clock is the one in carrier E. The intention is that the
preferred circuit pack be active whenever it is healthy. Once a failing preferred
Tone-Clock circuit pack has been replaced or repaired, the system will make it
active as soon as possible.
Control over interchanges for an EPN is accomplished in essentially the same
ways as items 1 and 3 in the PPN case above. In addition, when the
non-preferred Tone-Clock circuit pack in an EPN is active, and the preferred
circuit pack is repaired and proven capable of filling its roles, the system will
automatically interchange back to it as soon as possible.
ways as items 1 and 3 in the PPN case above. In addition, when the
non-preferred Tone-Clock circuit pack in an EPN is active, and the preferred
circuit pack is repaired and proven capable of filling its roles, the system will
automatically interchange back to it as soon as possible.
Software Maintenance Interchange
Interchanges may be instigated by software Tone-Clock maintenance in two
ways.
ways.
1. A scheduled Tone-Clock circuit pack interchange occurs according to the
parameters set by the change system-parameters maintenance
command. This can be disabled or set to run weekly, but the standard
(default) situation is for it to occur daily, at the time specified in the
system-parameters list for scheduled maintenance to begin. This
interchange will be blocked if the lock switches are set, if the
non-preferred Tone-Clock circuit pack in an EPN has been selected with
the set tone-clock command, if the standby Tone-Clock has been set to
the busyout state, or if the clock generation capability of the standby
Tone-Clock circuit pack is known to be impaired. When this scheduled
interchange occurs, the standby Tone-Clock circuit pack becomes active
for a period of 20 seconds to test its ability to generate clock signals, and
then is returned to standby mode.
command. This can be disabled or set to run weekly, but the standard
(default) situation is for it to occur daily, at the time specified in the
system-parameters list for scheduled maintenance to begin. This
interchange will be blocked if the lock switches are set, if the
non-preferred Tone-Clock circuit pack in an EPN has been selected with
the set tone-clock command, if the standby Tone-Clock has been set to
the busyout state, or if the clock generation capability of the standby
Tone-Clock circuit pack is known to be impaired. When this scheduled
interchange occurs, the standby Tone-Clock circuit pack becomes active
for a period of 20 seconds to test its ability to generate clock signals, and
then is returned to standby mode.
2. Unscheduled interchanges occur when on-board Tone-Clock circuit pack
maintenance, or ongoing switch maintenance tests of TONE-BD,
TONE-PT, or TDM-CLK uncover failures serious enough to raise any
MAJOR or MINOR alarm against the active Tone-Clock circuit pack.
TONE-PT, or TDM-CLK uncover failures serious enough to raise any
MAJOR or MINOR alarm against the active Tone-Clock circuit pack.
International Settings [G3r V2]
The TN780 Tone-Clock circuit pack uses three firmware configuration parameters
for international support [G3r V2]. The following two are automatically set by the
software load for the targeted country:
for international support [G3r V2]. The following two are automatically set by the
software load for the targeted country:
■
The circuit pack’s country-code (USA, ITALY, AUSTRALIA, etc.)
■
The circuit pack’s companding mode (mu-Law or A-Law)