Data Interface Unit - Comdial G0408 Manual

Digital Telephone System
While the first console (the one installed at the logic-paired port) extends the autodial
buttons of the paired telephone by 48 and provides DSS/BLF coverage for station ports
10 through 57, the second console (the one installed at the programmed station port)
provides DSS/BLF coverage as follows:
• On a 32-station system with two 8-station expansion modules, the first 16 buttons
are automatically assigned (defaulted) to station ports 42 through 57 for DSS
purposes.
• On a 32-station system with one 8-station expansion module, the first 8 buttons are
automatically assigned (defaulted) to station ports 42 through 49 for DSS purposes.
• On any other smaller station capacity system, all buttons are unassigned.
When an installer installs a console and programs it to complement a telephone without
first having a console installed at a port that is logic-paired to that telephone, its button
assignment is automatically defaulted, as described above, but the user can reprogram it
as required. It is important to remember that when a programmer programs for a second
console, the system sets the console button mapping to that which is described above.
When a programmer clear the assignment, the system resets the button mapping to match
a logic-paired console. This means that when the second console feature is cleared, the
console installed at that port complements the telephone that is installed at its
logic-paired port instead of the telephone that is located at the program designated port,
and its buttons are automatically reassigned to stations 10 through 57.
D

Data Interface Unit

The Data Interface Unit (DIU) is a device that provides the capability to plug an Industry
Standard Telephone (IST) or another device (such as a FAX machine or modem) into the
digital station port of a Digital Service Unit (DSU).
The DIU functions as a switch that connects the DSU station voice channel to either the
digital proprietary phone port (connector labeled "PHONE") or the IST port (connector
labeled "FAX/MODEM"). The IST port can be used to provide a data connection for a
FAX or modem. It can also be used for virtually any IST device such as a cordless
telephone or answering machine.
In addition to the power connector, the DIU has a connector for a digital multiline
telephone (Impact or DigiTech), and another connector that you can use for any one of
the following on-premise devices:
• Industry Standard Telephone (IST)
• facsimile machine (FAX), or
• modem.
A – 20 Digital Telephone System Features
IMI66–107