Meridian Nortel 1 Option 11C Technical Reference Manual page 270

Page 270 of 544
553-3011-100 Standard 14.00
Meridian Digital Telephones
Voice and Voice Signaling Channel
The Digital telephone Interface Chip functions as a control to switch the
handset, speaker, keyboard scanning, and LCD controls on and off.
Data and Data Signaling Channel
The ADO supports asynchronous ASCII operation. A data byte is received
from your terminal or personal computer, a control byte is added, and the two
bytes are transferred to the associated line card. In the other direction, two
data bytes are received from the line card, and the data byte is delivered to
your terminal in a bit serial format, at the terminal's bit rate.
The Meridian Digital ADO (equipped with the RS-232-C EIA interface)
supports the following features for ASCII, asynchronous, character mode,
interactive data terminals:
• HAYES dialing
• Keyboard dialing (KBD) - all transmission speeds supported
• Call origination to local and remote hosts
• Call termination
• Ring Again Capability
• Auto Dial
• Speed Call
• Automatic or Manual answering of incoming data calls
• Manual Modem pooling
• Remote loopback
Details for accessing and operating the various features are given in the
Asynchronous Data Option (ADO) User Guide (P0661883).
January 2002