Supported AT commands
Diva Client for Windows 2000/XP/2003 includes a 'port driver' which enables many non-ISDN applications such as terminal emulation programs (e.g. Windows HyperTerminal) and fax programs to connect to devices and services across the ISDN network.
The port driver is a COM Port emulation working directly on top of the Diva client card. The functionality of the COM Port can be controlled using AT commands, or by installing a virtual modem on the port.
Please also consult this page to determine what modems are supported with your device.
Predefined modem configuration profiles
For ease of use, Dialogic have included a range of pre-defined AT strings that encompass most of the most commonly used setups.
Simply type in the following AT command:
AT &Fn
Where n is the number of one of the pre-defined AT command strings. This will reset the modem and recall the factory setting for that number according to the table outlined below.
| n=1 | Data, X.75 |
| AT String: |
E1 V1 Q0 S0=255 +iM1 +iP1 +iS7/0 |
| n=2 | Data, V.110 synchronous |
| AT String: |
E1 V1 Q0 S0=255 +iM1 +iP2 +iS7/0 |
| n=3 | Data, V.110 asynchronous |
| AT String: |
E1 V1 Q0 S0=255 +iM1 +iP3 +iS7/0 |
| n=4 | Data, Analog synchronous |
| AT String: |
E1 V1 Q0 S0=255 +iM1 +iP4 +iS1/2 |
| n=5 | Data, Analog asynchronous |
| AT String: |
E1 V1 Q0 S0=255 +iM1 +iP5 +iS1/2 |
| n=6 | Data, V.120 |
| AT String: |
E1 V1 Q0 S0=255 +iM1 +iP6 +iS7/0 |
| n=7 | Data, V.120 56K |
| AT String: |
E1 V1 Q0 S0=255 +iM1 +iP7 +iS7/170 +iB9 |
| n=8 | Voice |
| AT String: |
E1 V1 Q0 S0=255 +iM3 +iP8 +iS1/0 |
| n=9 | RNA, HDLC framing |
| AT String: |
E0 V0 Q0 S0=255 +iM4 +iP9 +iS7/0 |
| n=10 | RNA, 56k |
| AT String: |
E0 V0 Q0 S0=255 +iM4 +iP9 +iS7/170 +iB9 |
| n=11 | BTX, (T.70) |
| AT String: |
E1 V1 Q0 S0=255 +iM1 +iP10+iS7/0 |
| n=13 | Group 3 Fax (T.30) |
| AT String: |
E1 V1 Q0 S0=255 +iM2 +iP7+iS1/2 |
Note: If an application talks directly to a COM Port, instead of via one of the virtual modems, you will need to initialise that port 'manually' using AT commands. Otherwise, it will simply default to being an X.75 modem.
Background:
When a virtual analogue modem has been installed on COM5, for example, then an application will dial out using the particular virtual modem that has been initialised as an analogue modem.
However, in the situation where the application talks directly to the COM port, rather than to the virtual modem which has been installed on that COM port, then the COM Port itself still has to be manually initialised to be an analogue modem. If not, it will default to being its default value - an X.75 modem, even though it is easy to assume that you have installed an analogue modem on it.
First published: 10-May-2011
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