Re: [PATCH 0/3] Long dial string support (2nd)

[Andras Domokos <andras.domokos@nokia.com>]

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Hi Rajesh,

On 11/22/2010 10:58 PM, ext Rajesh.Nagaiah(a)elektrobit.com wrote:
> Hi Andras,
>
>    
>> Dial strings can now be as long as 120 digits (not counting
>> '+'). This feature is going to be needed by the FDN feature.
>>
>> An FDN may consist of a phone number plus a DTMF string. In
>> order to have the call succeed when FDN is enabled, both
>> parts need to be provided when making a call, as a single dial string.
>>
>> For AT modems the long dial string can be and has to be
>> passed as is to the modem, for ISI modems the dial string
>> needs to be split into phone number (dest.
>> address sub block) and DTMF tone (post dest. address sub
>> block) before feeding it to the modem.
>>      
> Sending the DTMF tone in post dest. address sub block in case of
> the ISI modem or sending as part of the dial string in case of
> AT modems, will the modem take care of DTMF postfix handling by
> itself or its only going to use that for FDN check ?
>
> If its going to be earlier case, then not all modems support
> this feature and also sending the postfix DTMF tone automatically
> by the modem without notifying to the AP, then the user neither
> wont be aware of ongoing DTMF tone sending as there will be no
> local playback of the tone nor will have any control over the
> DTMF tones sending.
>
> So we should parse the dial string and extract the DTMF postfix
> (after the FDN check, anyways we are not suppoting FDN in oFono).
> Once the call gets connected, then the postfix DTMF tones can be
> sent out and signaled to the application about the start and stop
> events of each tone, so the application can generate the
> corresponding DTMF tones using the tonegenerator for local
> playback.
>
> Also currently the "w"/"W" stop character handling is not there,
> so I am not sure if its intentionally left out or missing ?
>    

I think the situation has been clarified based on the
discussion with Denis. I stop pushing these patches.
> BR,
> Rajesh
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>    

Regards,
Andras