[asterisk-dev] Implementing Native Bridging in a DAHDI kernel driver

[Fábio Urquiza]

Hi Matthew. I'm current working on the last 11 version.

-Fabio
On Dec 23, 2015 16:54, "Matthew Jordan" <mjordan at digium.com> wrote:

>
>
> On Tue, Dec 22, 2015 at 4:49 PM, Fábio Urquiza <flus at cesar.org.br> wrote:
>
>> Hi All,
>>
>> I have a PABX hardware composed of several FXO, FXS and E1 cards and a
>> Digital Matrix IC that commutes TDM between it's channels. The software
>> that runs the PABX CPU is a embedded linux distribution and I'm planning
>> using Asterisk as the Softswitch. I've already have developed a driver with
>> basic functions to detect phone off the hook and dial tones, do ringing and
>> to commute channels of different cards but now I need to figure out how to
>> interface that with Asterisk.
>>
>> I imagine that I have to implement some DAHDI functions and structures in
>> order to the Asterisk dahdi_chan detect the cards and map all to spans. The
>> problem is that the natural flow of a DAHDI call consists getting the TDM
>> from a channel using dahdi_receive() and sending the TDM to another channel
>> using dahdi_transmit(), and I need the TDM to be commuted internally in the
>> driver using the Digital Matrix IC.
>>
>> Browsing the Asterisk documentation I came along a concept called "Native
>> bridging" in which all bridging are done internally, with no TDM going
>> through the Asterisk. I like to ask you if that is the best approach to
>> take on that matter and if you have some pointers of how to implement that
>> concept in the DAHDI driver that I'm writing for this particular hardware.
>>
>> Thanks and best regards,
>>
>> -Fabio Urquiza
>>
>
> Hi Fabio:
>
> The answer to this depends on which version of Asterisk you're targeting.
> Which version did you have in mind?
>
> Matt
>
> --
> Matthew Jordan
> Digium, Inc. | Director of Technology
> 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
> Check us out at: http://digium.com & http://asterisk.org
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