George Vieira wrote:
>
> Hi all,
>
> I am now working on pppd rather than using "ifup" to dial to our customers
> mainly to get diald working properly.
> What I have noticed and this also happens on "ifup" is that when the chat
> script runs and tries to do a ATZ, the modem doesn't respond and the dial up
> eventually hangs up and trys again which then it initialises OK.
>
> For some reason it doesn't respond the first time around and second time it
> works. This takes about 2 minutes before it eventually tries to connect and
> frustrates our programmers especially when the link drops out.
Hmm it's been a while since I talked directly to modems but perhaps AT&F
may help. It's not ideal but you can use it to restore factory defaults
rather than ATZ. Another alternative may be to fiddle with the AT
commands until the modem is happy and then flick at an AT&W to write it
to non-volatile RAM.
I'm wondering if it's some sort of DTR thing from the previous call. If
it's an external modem does the same problem exist after powercycling
the modem or in the case of an internal, power cycling the machine?
Cheers,
Graeme
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