DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-1782TONE-BD (Tone-Clock Circuit Pack)
9
The third configuration parameter is used only for Italy (country c ode: ITALY), and
selects whether

new

versus

old

ISPT (Istituto Superiore Poste Telegrafi) tones will
be used for dial and confirmation tones. Values for dial confirmatio n tone can be
set independently on th e change system-parameters miscellaneous form.
Whenever such changes are made , the effects are immediately enforced on all
TN780 Tone-Clock circuit packs without disrup ting tone or timing servic es.
In addition the TN780 allows customization o f up to six system tones in order to
meet specific c ountry needs. These changes are mad e via the change
system-parameters country-options form.
The TN2182 allows the same internation changes as the TN780 but allow s the
customization of up to 24 system tones in ord er to meet specific country needs.
These changes are made via the change system-parameters country-options
form.
How to Replace the Tone-Clock Circuit Pack
Replacing the Tone-Clock circuit p ack is a service-disr upting proced ure on Port
Networks with a single Tone-Clock, because the Tone-Clock circuit p ack is
always needed to generate c locks for its network. For EPN Tone-Clock
replacement where no second Tone-Clock circuit pack exists, only that EPN is
affected. When the circuit p ack is removed, all c alls are dropped immediately,
the EPN enters emergency transfer within one minute, and no cal ls can be set up
from or to that EPN. However, if the PPN Tone-Clock is removed for replacement
in a Standard Reliability Option system, the System Emergenc y Transfer feature
is activated within millisec onds, and the entire system is d isrupted; no ca lls can
be placed, and existing calls are d ropped.
Tone New ISPT
Value(default) Old ISPT Value
Dial continuous cadenced
Confirmation cadenc ed continuous