Power Requirements; Data - Northern Telecom Meridian M3000 Reference Manual

The firmware in the TADO serves as an interface between the user and the
Meridian SL-100 system for establishing data calls. The firmware performs
the following functions:
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SL-100 TADO Keyboard Dialing (KBD) provides user interaction with the
MADO. Using KBD, the following information is provided:
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KBD displays a menu of features on the data terminal. A user enters a
number to be dialed or selects a feature from the menu. KBD prompts the
user for any additional information and displays call progress messages or
error condition messages, all in English phrases. Once the system
establishes the data call, KBD becomes inactive. When the system
disconnects the call, KBD resumes operation.
A subset of the keyboard dialing as defined by the Hayes SMARTMODEM
also provides user interaction with the TADO. This capability allows the
TADO to be used with personal computer software packages based on a
Hayes-type keyboard dialing command protocol. For information on KBD
and Hayes KBD, refer to 555-4001-110, M2000 Digital Telephone Reference
Manual.

Power requirements

Data

A 60 Hz, 110-V or a 50 Hz, 220-V ac power is required to provide voltages
of +5 V, +12 V, and -12 V to operate the M3000 Touchphone and TADO.
Meridian 1 Options 201, 211 Meridian SL-100 M3000 Touchphone Reference Manual MSL03
scans for user keyboard input
decodes and converts user inputs to appropriate key-press codes to send
to the Line Group Controller (LGC)
interprets call sequencing commands from the LGC
generates appropriate prompt messages, based on call setup progress
command menus
call progress messages
user input prompts
status and error information
General description 2-3