Protocols compatibility with ModemTest

[JackTheSnake]

Hi,

I am testing dialup modem with passmark modem test. Congratulation this is a very good program!!

In my tests, I need to change the speed and the protocols of the transmission.

I try to use the modem init string to modify the speed and the transmission protocol with the AT commands.

But when I try to change the protocol and the speed, I am not able to have a connection between the 2 modems.

Does the modemtest software support other protocols than V90 or V92?

Thanks,

Jack

[David (PassMark)]

It should work. But it has been several years since we tested this. (Dial up modems are rapidly going out of fashion nowadays).

The user specified modem init string is sent to the modem immediately before the dial command (ATD <phone number>).

After the init string is sent to the modem you should see one of the two following messages depending on the modem's response.
Invalid modem response. Expected 'OK' but got: <error>
OR
Init completed successfully

So if you get the init string right, you should be able to select any feature or function that your modems support (include speeds and protocols)