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Chapter 12: ISDN TA/V Configurations
An ISDN TA/V’s configuration determines its operating characteristics with
regard to how it connects to and communicates with the local DTE, and how
it communicates over the ISDN line. To this end, your ISDN TA/V is
equipped with four factory-set configurations (Factory 0 - 3), covering the
most common connectivity requirements of the attached DTE. These are
held within the ISDN TA/V’s memory and cannot be altered.
A further three memory locations are used to store editable configurations—
those containing your preferred power-up configurations (automatically
loaded each time the ISDN TA/V is powered on), with the other two
containing user defined configurations (User 1 - 2).
One of the ISDN TA/V’s memory areas which is not saved when the ISDN
TA/V is powered off, is used to temporarily hold the configuration which is
actually being used. This memory area is of course fully editable and supports
configuration changes which are made while the ISDN TA/V is powered on.
The configuration within this memory location is termed the active
configuration.
This chapter explains the significance and use of each of these
configurations; how to build and store configurations within the user-
definable locations, and how to examine the active configuration.
12.1 Factory Configurations
The four factory set configurations which are permanently stored within your
ISDN TA/V’s memory have been designed to cater for the most common
applications of the ISDN TA/V.
Chapters 14-17
contain a detailed listing of
the parameter settings which together form a configuration; and
Section 12.3
explains how you can examine the settings of a particular configuration.
• Factory 0 —
V.24/V.28 DTE interface operating asynchronously. Dialing is
initiated using the AT command language, and automatic answering and
sensing of the required DTE interface rate are enabled, as is the type of
rate adaption, error correction, data compression, etc. This is the most
common application of an ISDN TA/V and Factory 0 should be used for
most PC-to-PC, and PC-to-host ISDN communication.
12. ISDN TA/V Configurations
