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Appendix C: Meridian Modular Telephones add-on modules installation Page 423 of 504
Telephones and Consoles Description, Installation, and Operation
Asynchronous Data Option
The Meridian Modular Telephones can be equipped with an Asynchronous
Data Option (ADO) to enable a data call to be made using keyboard dialing
from an attached terminal or personal computer. Voice and data
communications can be conducted simultaneously without causing any
mutual interference.
Functional description
The ADO is mounted in the telephone and works in conjunction with the
Digital Interface Chip to provide asynchronous communication up to
19.2 kbps from an ASCII data terminal or a personal computer to the private
Integrated Services Network. The ADO appears as Data Communications
Equipment (DCE) in the terminal and connects to the Data Terminal
Equipment (DTE) through an RS-232-C connector mounted on the ADO
printed circuit board.
The Asynchronous Data Option supports the following:
• Hayes dialing
• Automatic data rate detection at all rates up to 19.2 kbps
• ASCII keyboard dialing (originating data calls to local and remote hosts
or DTE by using the terminal keyboard)
• 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
• Break detection and generation