I am trying to transfer "text" typed in the Hyperterminal window to the FAX. I intend to do this with following sets of commands: ATDT(fax number);//dial the fax number AT+FCLASS=1//set to fax mode after connection AT+FTM=98//set version type to transmit data Here is the text i want to transmit to FAX ATH// finally hang up the phone I get success in connecting with the remote fax. But when AT+FTM=98 command is issued, an error message is encountered. Please someone suggest me the right way to transfer ASCII data to the remote fax using AT commands.

Unfortunately you cannot send plain text via Fax. Tt first has to be converted to a special fax graphics image and Hypertemninal does not have that facility. To do this you need to have a fax printer set up on your computer. Type your text in any text editor or word processor. When you are ready to send, print it, but print it to the fax printer. That will create a fax document ready for sending. If you do not have a fax printer have a look a Mighty Fax. Make sure you get the Windows 98 version. There is a different version for Winws NT/2000/XP. http://www.rkssoftware.com Stuart

Thanks for the reply. I want to design my own application program and for this I 'm trying in the hyperterminal. Can't we use AT command for this purpose? Also I want to know that in what case the AT+FTM command does not issue Error message.

I dont know why AT+FTM is causing an error. I would have to look up a list of AT commands to find out. Could be that you issuing to early before the handshing has had time to finish. Either way, simply using AT commands is never going to work. The first thing you have to do is convert the text file in to a page orientated fax graphic image. This what a fax machine does when the page goes through the fax machine and the fax printer does the same. Deigning yout own fax programme is no trivial task. There is a lot to it. For instance how would you handle errors, how would you handle multiple page. I would do some reading first. Stuart