Avaya Communication Manager Administrator's Manual page 523

3. To disconnect, the user enters +++. At the CMD: prompt, the user types end and presses
Enter.
Telephone dialing
To make a data call, an ISDN-BRI telephone user presses the data button on the terminal,
enters the number on the dial pad, and then presses the data button again.
The following data functions are not available on ISDN-BRI telephones:
One-Button Transfer to Data
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Return-to-Voice
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Data Call Preindication
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Voice-Call Transfer to Data and Data-Call Transfer to Voice
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The system handles all presently defined BRI bearer data-call requests. Some capabilities that
are not supported by Avaya terminals are provided by non-Avaya terminals. If Communication
Manager does not support a capability, a proper cause value returns to the terminal.
BRI terminals receive a cause or reason code that identifies why a call is being cleared. The
BRI data module converts certain cause values to text messages for display.
In a passive-bus multipoint configuration, the system supports two BRI endpoints per port, thus
doubling the capacity of the BRI circuit pack. When you change the configuration of a BRI from
point-to-point to multipoint, the original endpoint does not need to reinitialize. Only endpoints
that support service profile identifier (SPID) initialization can be administered in a multipoint
configuration.
Analog modems
When a telephone user places a data call with a modem, the user dials the data-origination
access code assigned in the system before dialing the endpoint.
Considerations
A BRI telephone cannot call a data terminal, and a data terminal cannot call a BRI
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telephone.
Data Call Setup
Issue 2.1 May 2006 523