[Asterisk-Users] SIP Jitter Buffer for 1.2.5

[Adam Moffett]

> jitterbuffer            for svn trunk + jitterbuffer
> jitterbuffer-1.2         for 1.2 + jitterbuffer
> test-this-branch        for the test branch with a lot of cool stuff 
> including
>                     the jitterbuffer

I installed the jitterbuffer-1.2 branch and I have a few questions.

First and foremost I'm getting hundreds of lines like this in my log file:

Mar 17 10:54:03 WARNING[22831] abstract_jb.c: Recieved frame with 
invalid timing info: has_timing_info=0, len=1668178290, ts=1718447988
Mar 17 10:54:03 WARNING[22831] abstract_jb.c: Recieved frame with 
invalid timing info: has_timing_info=0, len=1668178290, ts=1718447988

The console shows something similar:
Mar 17 10:57:09 WARNING[22866]: abstract_jb.c:347 ast_jb_put: Recieved 
frame with invalid timing info: has_timing_info=0, len=-1, ts=166273064
Mar 17 10:57:09 WARNING[22866]: abstract_jb.c:347 ast_jb_put: Recieved 
frame with invalid timing info: has_timing_info=0, len=-1, ts=166273064
Mar 17 10:57:10 WARNING[22866]: abstract_jb.c:347 ast_jb_put: Recieved 
frame with invalid timing info: has_timing_info=0, len=-1, ts=166273064

My log file is going to be very big today.  What could be responsible 
for frames (every frame?) having invalid timing info?

Second I'm not sure if it's actually doing anything.  For testing, I 
tried setting the max size to 2000ms and implementation to fixed.....if 
I'm reading the comments in the sample config correctly that should 
create a 2000ms fixed jitter buffer, which in turn should mean a 2 
second delay in audio, but I wasn't hearing any delay at all.  Is this 
not a valid way to test whether the jitter buffer is doing something?

Third....I'm interested in a way to create some jitter ;)  I was 
thinking I might take an ethernet hub and try to saturate it with 
several simultaneous large file transfers or something like that.  
Another possibility might be an 802.11 wireless connection at a fairly 
long range.  If anyone knows of a more convenient way for me to create a 
jittery connection I'd be very interested.