On 12 November 2011 20:02, a dehqan <dehqa...@gmail.com> wrote:
> dio_write($handle, 'AT') & dio_write($handle, "AT") make firefox times out
> on Waiting for localhost ... .
> But dio_write($handle, "AT\n") makes it prints AT exactly the same command
> or  Atttt > Atttt , ..
>
> On Sat, Nov 12, 2011 at 10:02 PM, Negin Nickparsa <nickpa...@gmail.com>wrote:
>
>> are you sure about ATD03518726535\n?
>>
>>  can you try if ( dio_write($handle, 'AT') )?
>>
>

Don't use \n, use \r.

http://en.wikipedia.org/wiki/AT_commands#Example_session



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