Arne Gylseth wrote:
> Well, I have been asking myself a few questions:
>
> 1. I have observed a number of times that Astlinux gives bether sound
> quality than other Asterisk installations, I have tried, but still I ask
> myself: Can this be really true, or is it just a number of coincidents ? (I
> can se it and I can hear it, but I still dont know if I can believe it.)
>
> 2. Is the Astlinux based on a standard Linux kernel or is it a modified
> kernel that gives it some improved properties for ip telephony ?
>
> 3. Coult it be the Asterisk source code that is modified in some way ? Some
> functions like the Disa function, as an example just give some partly good
> enough functionality, if based on one of the newer Digium source codes. It
> works, but not 100 % like I wanted it to work. With the Astlinux
> 0.3.0installation it works just perfect. The dialtone is 100 % stable,
> there is
> no unwanted interupts of any kind. It just work, smooth and nice.
>
> In this tread it has been mentioned that Asterisk can not coexist wery well
> with X-win. Well the alternate installations I have tested Astlinux against
> has all benn text based installations, only with a minimum number of
> processes running.
>
> For me it looks like there is smething more of improvements built into the
> Astlinux than just a reduction of the number of running processes. When I
> take a Clarkconnect server and compile the newest Digium Asterisk
> sourcecode
> into it, and reduce the number of active proceses to allmost nothing, and
> run it like a Asterisk server, it still sounds like ip-telephony with a
> "allmost good enough digital sound". When I compare with a Astlinux
> installation running on a much less powerfull computer, it just sounds and
> work quite perfect. If I run the Astlinux on a more powerfull PC it still
> sounds and work just perfect.
>
> For me it looks like that to make iptelephony "to work", you can just use
> any guide and standard distro and it will work. But if it is a question
> of things like tweaking out the right sound quality and to make everything
> running just perfect like it should, there is still some element of
> mysterious and unexplainable behaviour as a part of it all. (How could to
> digital streams of the same analoge sound signal sound different, and also
> one other example: How could two allmost equaly configured routers perform
> rather differently with ip telephony, even though they should work equally
> and the same way.)
>
> I whish I were able to understand one day how to Asterisk installations can
> "sound different", when based on the same protocols and identical same
> configuration files, same hardware etc. I think it shouldn't be possible,
> but still it looks like it is ???
>
> Best reg Arne.
>
Arne,
First of all, this whole thread has been rather flattering. I have
always had very good luck with AstLinux. I always just thought it was
because I have an above average understanding of it :).
As others have pointed out, one of the biggest changes in AstLinux is
the use of the native sound prompts. When playing these back, the
difference is HUGE compared to the original prompts provided with
Asterisk. Actually, [EMAIL PROTECTED] now uses these prompts as well. Have
you compared sound quality with it?
Honestly, other than that, I don't think that I can point to a single
method, patch, change, etc. that would make that much of a difference.
However, it seems that you have found a great mix of hardware and
software. I'll do my best to keep from breaking anything!
--
Kristian Kielhofner
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