Instruction manual

UPGRADES AND ADDITIONS
Port Circuit Pack Upgrades for DEFINITY Generic 3r
It may be necessary, depending on the features required for a particular upgrade, to upgrade
some of the port circuit packs. Table AR lists the port circuit packs that may need to be
upgraded to a later vintage of the same circuit pack or to a different circuit pack, along with the
circumstances that make the upgrade necessary.
TABLE AR. Port Circuit Pack Upgrades
Type
Service
Line
Trunk
Code
TN725 Speech Synthesizer
TN748 or TN748B Tone Detector
TN714 Tone Clock
TN741 Tone Clock
TN756 Tone Clock
TN776 Expansion Interface
TN775 EPN Maintenance
TN762 Hybrid Line
TN747 Central Office Trunk
TN760 Tie Trunk
TN763 Auxiliary Trunk
TN722 DS1 Tie Trunk
TN767 DS1 Interface
Upgrade Reason
Replace with Iastest model of TN725 (for example, TN725B)
for full functionality.
Replace with latest model of TN748 (for example, TN748C) if
the Outbound Call Management (OCM) feature is required for
the system.
Replace all TN714 models with TN768 Tone Clock for full
Functionality. If Stratum 3 interface is required in the PPN,
replace with TN780 Tone Clock.
Replace all TN741 models with TN768 Tone Clock for full
functionality. If Stratum 3 interface is required in the PPN,
replace with TN780 Tone Clock.
Replace all TN756 models with TN768 Tone Clock for full
functionality. if Stratum 3 interface is required in the PPN,
replace with TN780 Tone Clock.
Replace all TN776 models with TN570 Expansion Interface for
connection to Switch Node Interface.
Replace with latest model for full functionality.
Replace TN762 with TN762B or later model for 7300 sets and
if dropping incoming calls.
Replace TN747 with TN747B or later model if ACD is required
for the system.
Replace TN760 with TN760B vintage 6 (or later model) if CAS
is required for the system and if there is an end-to-end signal -
ing problem.
Replace TN763 with latest model if Audichron Announcement
Equipment is included in the system.
Replace TN722 with TN722B vintage 6 (or later model) if CAS
is required for the system.
Replace with the latest model of TN464 32-Channel E1 Trunk
if ISDN-PRI and the DS0 channel are required for the system.
TN767 can be reused if only DS1 or NFS in-line service are
required.
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