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Cellular forums Home > Archive > Cellular GSM Technology > August 2006 > Re: GPRS config wierdness - solved
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Re: GPRS config wierdness - solved
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| Dave Royal 2006-08-04, 10:33 am |
| John Henderson wrote:
> Dave Royal wrote:
>
>
> Interesting - I haven't seen a device before which fails to keep
> the context setting in flash memory.
>
I normally send this sequence to the phone from the PDA:
ATZ
AT+cgdcont=1,"IP","internet.wind"
ATDT*99#
In the test referred to above I removed the AT+cgdcont... but left the
ATZ - I had forgotten that ATZ means 'reset'. If I remove ATZ as well it
works - with just ATDT...
I infer that ATDT causes the phone to forget the PDP context - and also
probably to not use the APN I've configured in the phone itself.
Dave
--
(Remove any numerics from my email address.)
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| John Henderson 2006-08-04, 3:33 pm |
| Dave Royal wrote:
> I normally send this sequence to the phone from the PDA:
> ATZ
> AT+cgdcont=1,"IP","internet.wind"
> ATDT*99#
>
> In the test referred to above I removed the AT+cgdcont... but
> left the ATZ - I had forgotten that ATZ means 'reset'. If I
> remove ATZ as well it works - with just ATDT...
>
> I infer that ATDT causes the phone to forget the PDP context -
> and also probably to not use the APN I've configured in the
> phone itself.
Now we're getting somewhere!
There are two types of reset. "ATZ" resets to user defaults,
while "AT&F" resets to factory defaults.
I haven't seen a device before which undoes the PDP context with
an "ATZ" command. But it does make sense.
Having set the device up the way you want it, you should be able
to save your user defaults with the "AT&W" command (so that
"ATZ" simply restores them).
John
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