2 General description
555-4001-110 Standard 09.03 July, 2002
Versions without the Handsfree feature have a piezo-disc transducer for
alerting tones and on-hook dialing. The M2112 is equipped with an
integrated loudspeaker for both handsfree voice communication and
alerting tones. Each programmable key has an associated Liquid
Crystal Display (LCD) indicator, and all programmable keys can be
assigned in any combination of loops and features.
Data
When equipped with the Meridian Asynchronous Data Option (MADO),
the M2000 Digital Telephones provide data capabilities. MADO
provides an RS-232-C interface to ASCII terminals and personal
computers at data speeds from 110 byte/s to 19.2 kbyte/s. The
firmware in the MADO serves as an interface between the user and the
Meridian SL-100 system for establishing data calls. The firmware
performs the following functions:
•
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
SL-100 MADO Keyboard Dialing (KBD) provides user interaction with
the MADO. Using KBD, provides the following information:
•
command menus
•
status and error information
M2112
11
Hold
Release
Volume control
Handsfree/mute
M2317
12
Hold
Release
Volume control
Handsfree/mute
Programmable
soft–keys
Table 1 Meridian digital telephones (Sheet 2 of 2)
Version
Programmable
keys
Fixed keys
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