[gta03] mc75i heads up

[Joerg Reisenweber]

Am Mo  1. Dezember 2008 schrieb Andy Green:
> Somebody in the thread at some point said:
> | Just a small heads-up,
> |
> | despite fighing the flu, I'm excited to report that I have just been
> able to
> | talk with our forthcoming new modem (cinterion mc75i) in multiplex mode
> | without any problems (using our trusted gsm0710muxd w/ some minor patches)
> |
> | A modem support class will hit ogsmd soon.
> 
> Sounds good... what should one send this thing to get anything out of
> it?  For example, +++ATZ down the serial port from powerup should issue
> OK or something?

hmm, "+++" (including a pause after it) to escape to command mode shouldn't be 
necessary as long as we aren't in an established datatransfer. (As I get it, 
all about muxer is to have datatransfer on a different virtual channel than 
AT commands).
Sending a mere "AT\r\n" should return an OK.
Of course reset command "ATZ\r\n" should work as well

All this of course applicable only if the muxer really establishes a number of 
virtual serial connections each of them compatible to a usual one.

/jOERG
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