User`s manual

Getting Started
Setting Critical Options to Make a
Data Call
The ADM is shipped to you with default data option settings. Depending on your
particular needs, you may need to change some of these options. This section
briefly describes the four most important data options —local mode, data mode,
speed, and parity. It also explains how to set them from the softkeys of your
8500 series display terminal. If you are unable to successfully transmit data after
following the procedures in this section, refer to Chapter 4, ‘‘Data Options and
Profiles’’ for complete information on each of the options.
You can also set these options and additional data options from an attached data
terminal or PC keyboard. These additional options may allow you to specify
more precisely the configuration which best suits your needs. For information on
setting data options from an attached data terminal or PC, see the CMD Set and
Program command descriptions in Chapter 3.
Data Mode, Local Mode, Speed, and Parity
Options
Data Mode
The data mode option setting determines whether the outgoing calls you make
will use X.25 packet switched data on the ISDN D-channel or one of several
other data protocols circuit switched on an ISDN B-channel. (For incoming calls,
your ADM automatically adapts to the data protocol in use by the compatible
calling endpoint.) The D-channel X.25 packet switched option value is DX25.
The B-channel circuit switched data mode option values are: B2 (factory setting),
BA, BV64U, BV64I, BV56U, and BV56I.
Select D-channel X.25 packet switched data (DX25) for packet switched
data connections.
Select B-channel AT&T Mode 2 (B2) or B-channel AT&T Mode 3/2
Adaptive (BA) for connectivity over 64 kbps facilities to endpoints
supporting only one or both of these protocols.
Select B-channel V.120 protocol (BV64U, BV64I, BV56U, and BV56I) for
connection to equipment supporting this newer industry standard protocol.
Select BV64I for error corrected (I-frame) mode or BV64U for uncorrected
(UI-frame) mode connections over 64 kbps facilities. Select BV56I for
error corrected (I-frame) mode or BV56U for uncorrected
(UI-frame) mode connections over 56 kbps facilities.
The data mode option setting must correspond to the capabilities administered
on your ISDN telephone line. Contact your System Administrator for information
on the proper setting of this option. For more detailed information on data mode,
refer to the Mode option in Chapter 4 ‘‘Data Option Definitions.’’
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