[Asterisk-Users] help with linejack card

[David T Hollis]

Gregg Lebovitz wrote:

>Hi,
>
>I am trying to get a prototype working based on Asterisk and Quicknet
>cards. I currently have to systems set up each with a LineJack card. I
>have the systems working, but can't get the voicemail demo to work
>properly. Messages to the user telephone set from the voicemail system
>are clear, but recordings left through the phone are distorted. Sounds
>like the audio has lots of echo and sampling error type distortion.
>
>I know this must be covered in the archives, but I can't find a
>reference.
>
>I am using the Asterisk demo configurations. configuration is as
>follows:
>
>;
>; Linux Telephony Interface
>;
>; Configuration file
>;
>[interfaces]
>
>;mode=immediate
>;mode=fxo
>mode=dialtone
>
>;format=g723.1
>;format=slinear
>format=ulaw
>
>silencesupression=no
>;
>; List all devices we can use.  Contexts may also be specified
>;
>context=local
>context=default
>
>;
>txgain=100%
>rxgain=100%
>device => /dev/phone0
>
>
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>  
>
Try using the slinear format.  In reading the comment that slinear would 
sometimes cause crashes, I changed to use the gsm codec.  When I tried 
to use the system, I would always get a error on playing back messages 
because a recording in that format was not found.  Changing it back to 
slinear made it work great.

BTW, if you can get the LineJack to dial outbound on the PSTN, let me 
know.  Haven't managed to get that to work just yet.