[asterisk-biz] Foip solution

[Trixter aka Bret McDanel]

On Wed, 2010-03-31 at 00:44 -0400, James Sharp wrote:
> Depending on how loaded the TDM return link
> is, latency can be all over the place.
> 

the definition of "latency all over the place" is jitter.  Its not a
latency problem its a jitter problem.  Jitter is the varying
inter-packet arrival time, if it is constant even if it is 1 week later,
there is no jitter.


high latency can ruin conversation quality, but not call quality.
conversation quality is harmed because of the psychological trigger of
when the other person is finished speaking and it is your turn.  Most
people believe this to be 250-300ms of silence, when you have high
latency people will double on each other.  This is not as big of a deal
with fax machines which handle this very well.  

It is jitter and loss that kills faxes not latency.  
-- 
Trixter http://www.0xdecafbad.com     Bret McDanel
pgp key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x8AE5C721