Re: chan_lcr bad quality

Hi Thomas!

How do you know that this issue is not an asterisk case ?!
Do you have a "white noise" in the line or is it just loud ?!

The volume can be handled through asterisk with the chan_lcr config
variables for sure.

Why don't you figure out to get some debug informations for the mISDN
people and post it on pastebin for the developers to have a look on it
to figure out if it's a chan_lcr coding issue or just asterisk tweaks to
accomplish?!

I don't believe that the developers will make for YOU (as they did not
for me) a solution.

Until it is resolved, why don't you get yourself a cheap HFC-S board for
10.- € and search for the problem instead for hoping that somebody does
for you something on the quick line ?!



Tamer




On 10/20/13 14:09, Thomas Witt wrote:
> Hi,
> 
> I am trying out asterisk-11.5 and chan_lcr on a raspberry pi. ISDN
> hardware is a Draytek MiniVigor 128 (HFC-S usb chip). Basically I got it
> to work using the  “mvcstromer/asterisk-11.5” branch from lcr.git and
> in-kernel mISDN. I can now successfully relay incoming ISDN calls to a
> SIP softphone and route SIP calls to the outside world through the ISDN.
> 
> While the voice transmission from ISDN to SIP is loud and clear, the
> other direction from SIP to ISDN is very noisy, has a low volume and is
> barely intelligible. CPU load during a call is about 20%, so that should
> be no issue.
> 
> As I was unable to find any documentation on chan_lcr tweaking online,
> could someone help me with some information about chan_lcr and mISDN
> codec and level handling?
> 
> Thomas
> _______________________________________________
> isdn4linux mailing list
> [email protected]
> https://www.isdn4linux.de/mailman/listinfo/isdn4linux
> 

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