Miscellaneous Functions; Station Card Functions; Ring Generator Unit (Rgu); Power Failure Transfer Unit (Pftu) - Vodavi STARPLUS Triad XTS Installation Manual

Peripheral Cards and Components

Miscellaneous Functions

The following units are related to other system functions that are external to the KSU.
The Ring Generator Unit (RGU) provides ringing voltages for Single Line Telephones. Each
Cabinet supporting SLTs must have an RGU installed.
Single Line Telephones do not ring
when called on intercom ...
Message Waiting signal to Single
Line Telephones with message
waiting lamps does not light lamp ...
The Power Failure Transfer Unit (PFTU) provides automatic cut-over of up to 6 CO lines to up to
6 Single Line Telephones when system power or the central processor fails.
CO lines connected through the
PFTU are never available to the
system in normal operation ...

Station Card Functions

The system can be equipped with various types of station interface cards.
The digital key telephone interface board (DTIB) provides the interface for twelve Digital
Telephones, DSS/BLF Consoles.
Unable to receive intercom dial
tone ...
Poor transmission characteristics
...
Key telephone set inoperative ...
Key telephone unable to invoke
features ...
No LED indications ...
Table 4-13: Ring Generator Unit (RGU)
Problem
Table 4-14: Power Failure Transfer Unit (PFTU)
Problem
Table 4-15: Digital Key Telephone Interface Board (DTIB)
Problem
Chapter 4 - Maintenance and Troubleshooting
Possible Solutions
Check RGU connection.
Verify correct SLT type programmed (SLT with
Msg Lamp in Station ID programming).
Possible Solutions
Make sure the NORMAL/TEST switch on
the PFTU is in the Normal position.
Check PFTU programming.
Possible Solutions
Reset the system.
Check wiring.
Check wiring.
Replace DTIB.
Check station programming.
Check feature programming.
Check using known operative keyset.
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