[Asterisk-Users] Re: Asterisk Crackly Bad quality

[Chris Miller]

Bruno Hertz wrote:
> On Sun, 2004-12-19 at 13:11 +1100, David Uzzell wrote:
> 
> 
>>I have * running on Mandrake 10.1 and I to had similar problems in the 
>>begging but as soon as I had ztdummy configured correctly everything 
>>seemed to just fall into place and work with IAX and *, not that I have 
>>got a perfect dialplan as that confuse's me but hey thats another subject.
> 
> 
> The problems you had and were resolved with ztdummy, were they primarily
> IAX related ?
> 
> Since, after all, the main channels relying on special timers are
> Meetme, IAX and (maybe) MusicOnHold according to
> http://www.voip-info.org/wiki-Asterisk+timer
> 
> Just want to be sure, since I still believe my mere demo playback
> issue likely has a different reason ...

I'd like to chime in here as I have a similar problem. I have been 
toying with * on other (cheapo) hardware not so successfully (mainly due 
to the audio chipsets). I just purchased an ASUS AV8 (Socket 939 Athlon 
64 3500+) system for my real world testing, it's a high end MB and 
overall it has 98% of the feature set for what I wanted to accomplish. 
Currently I'm running FreeBSD 5.3 under the amd64 port of the OS (fyi). 
I'm experiencing the exact same symptoms - choppy clicking of the demo 
voice.

I'll start by saying that I have done a reasonable amount of research on 
*, MB chipsets, and FreeBSD, and I've spent considerable time getting 
the basic functionality to work. The "ports" version of * under FreeBSD 
needed some tweaking to work under amd64 vs i386, but I have a working 
version including h323 and oss that works with the demo stuff.

 From what I have read the issue with choppy sound under the demo voice 
seems to be due to a timing issue, one that can't be solved under 
FreeBSD with the zaprtp (linux) stuff, and I haven't seen anything as 
far as USB stuff that will handle this. I do not have a Digium card 
installed yet, but I will have a TDM400P in a couple of days. Will a 
Digium card with the current driver solve the problem ? (zaptel doesn't 
compile for FreeBSD 5.3 amd64, maybe for i386).

Given that I have a working installation with the same symptoms as 
reported, I'm leaning towards us having the same problem. If this is a 
timing issue, it would be great to solve this in a systematic way 
(without external hardware). Thoughts?

Chris