=Sound card access interface inside freeswitch=
We created a file access interface to the sound card, so it can be used in any endpoints as long as it supports file IO. The syntax is in the form:
<pre>
sound_stream://[Sound Device name].snd
</pre>
TODO: we can add sample rate and so on attributes later.
Example:
<pre>
sound_stream://default.snd
</pre>


==Maya44 card==
We handle it specially, which can be counted as number. the format is:
<pre>
sound_stream://[INT].snd
</pre>
example:
<pre>
sound_stream://3.snd
</pre>
which can be translated as dsnoop:Maya44,1 with left channel. 
===counting the total valid maya44 channel no===
api:
* '''show_luna_cards_input_no''' : will show all valid input channels, format: 1,2,3,4,10,16.
* '''rescan_luna_cards_input_no''' : will rescan maya44 cards.


==System default sound card==
System default sound card will have channel id: 1,2