Avaya 6424D+M Bedienungsanleitung PDF herunterladen (Seite 10)

Local Mode

In local mode, commands typed at the data terminal keyboard are read, interpreted, and acted

upon by the ADM to make and end data calls as well as to modify data option values. There are

two varieties of local mode: local-idle and local-data. The ADM is in local-idle mode whenever

no data call has been initiated. The ADM goes into local-data mode when an established data

call is temporarily suspended by a user who wants to view or modify option values or disconnect

a call.

Data Mode

In the data mode, data from your data terminal or PC is exchanged with a host computer or other

data endpoint without interpretation by the ADM.

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, and explains how to set

them from your ISDN set keypad. 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 terminal,

see the CMD Set and Program command descriptions in Chapter 3.

Data Mode, Local Mode, Speed, and Parity Options

The data mode option setting determines whether the outgoing calls that 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, 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

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Avaya 6424D+M Bedienungsanleitung Seite 10