Donald D'Alessandro wrote: > > I have connected my PIC to a PC and it sends the 'at' command strings > correctly. Do your routines work for an external modem? > > What do you mean by, "Do you want to?"? > > Thanks, > Donald Opss...i wrote "incorrect"... Please, verify the SD and RD leds...all must FLASH when you send a command, for example, "ATA" + ENTER (CR) ASCII 13 Don't forget, before to do all tests, to send a INIT string... Well, if your AT commands goes very well, maybe your CABLE (TXD)=MODEM has problems... Miguel Wisintainer