ELSA TanGo 2000, Руководство пользователя

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Control Commands
ELSA TanGo 2000
16
After the three escape characters have been entered, the ISDN terminal adapter is
already in the command phase. Data transfer is not interrupted until a valid command line
has been recognized.
The escape character is not associated with the
E
of the ASCII character set. It can be
redefined using the S2 register.
All commands sent to the ISDN terminal adapter must begin with the ASCII characters
AT or at (not valid: At or aT) and must be concluded with
M
. A valid command line
in an escape sequence is restricted to a maximum of 40 characters.
The command AT&F loads the firmware default parameter settings. The ISDN terminal
adapter is thus reset to its factory condition. This command does not execute during
existing connections.
Bit-oriented Registers
Bit-oriented registers are primarily used to provide status information. Please note that
the modification of a single value in the bit-oriented register may have several functions.
Great caution should thus be applied when changing bit-oriented registers! We
recommend the use of the AT commands to change the configuration of the ISDN
terminal adapter. A complete description of the S registers can be found on the
ELSA
TanGo CD.
Modifying Bit-oriented Registers
The following example will illustrate the modification of the bit-oriented options of a
register. To set the bit 6 of register S14, enter the command
ATS14.6=1 .
If you would like this value to be maintained after the ISDN terminal adapter is switched
off, the new entry can be stored with the command
AT*W .
Advanced Features
The a/b ports of the ISDN terminal adapter let you take advantage of a number of
advanced features, such as call alternation, offered by digital telephone exchanges. This
requires the use of a telephone with tone dialing and a flash button.
If you are not sure whether your telephone uses tone or pulse dialing, check the sounds
that it makes during normal dialing: If you hear a rattling sound for each digit you dial,
the phone uses pulse dialing, whereas a beeping noise indicates tone dialing.
Please contact your telephone service provider for further details regarding the
implementation of these advanced features.