On 2015-04-04, hru...@gmail.com <hru...@gmail.com> wrote: > I can speak with the "Elsa Microlink 33.6TQV" with almost any > speed (using "cu" command), also similar speeds, in which one is > not exact multiple of the other. > > With the "Sony Ericsson GM29" only with a speed of 9600bps. If I give it > the two commands *E2FAX and &F, I can do it with 19200bps, and > only with 19200bps. > > Why? Does the first modem adapt its comunication speed with the computer?
Yes. That's the traditional behavior of dial-up modems with the AT command set. They use the bit pattern of the "AT" character sequence to automagically recognize the interface speed. The company that pioneered this was Hayes with their line of SmartModems. > And if this is a normal behaviour, why is the second modem so strict with > the speed? I guess they didn't bother to clone these by now obscure details of 1980s technology. -- Christian "naddy" Weisgerber na...@mips.inka.de
