Determining your Class of Fax / Modem

V14 was originally designed to work with only Class 1 modems. They currently are the most prevalent type of fax / modem on the market. Some high end modems are Class 2 or support both Class 1 and 2.

To determine what class of fax / modem you have, you will need to make sure that the modem is installed properly, is Hayes compatible, and that you have some sort of communications program installed. Most modems come with a communication program of some type, like Crosstalk or QuickLink, but you can use ProComm (if you have it) or even Windows Terminal program. Once you have one of those running, you will need to get to a place where you can enter commands for the modem. The following commands will determine what the Class of modem is:

AT
This should return an OK from the modem
AT+FCLASS=?
The modem should then reply:
0,1 For a Class 1 Fax
0,2 For a Class 2 Fax
0,2.0 Also for a Class 2 Fax
0,1,2 For a Class 1 and Class 2 Fax

Note: Class 2 only modems require Class 2 software like QuickLink 2.2.2!

TeleMagic, Inc has not tested V14 with Class 2 modems, faxing with V14 may not work!

Class 2 only modems will not load the Fax software TSR driver if you try to use them with a Class 1 fax software. The driver software would act like the modem is not connected properly or not turned on, so that on start up you might see an error message like this:
Modem not found, do you wish to re-initialize the modem? y/n

This error message could truly mean that the modem is not connected or turned off, but you can use the Modem command above to sort out incompatibilities.

 

-- End of FAQ #597

FAQ ID #597

Product Related: TM CS v14.2x

Last Updated: March 20, 2000