[Asterisk-Users] What business IP phone to use

[Conrad Wood]

On Sat, 2006-02-25 at 00:21 +1100, David Ankers wrote:
> Aha, micro seconds in networking terms is normally written usecs or us
> (actually it's the greek letter mu as in ulaw) rather than ms which are
> milliseconds seconds - what had me puzzled was that it was stated that this
> could harm the voice path!
> 
> > The difference can also cause unnecessary delays and therefor echo in the
> > path. For example, procurve switches typically have 13ms switching time,
> > the high-end netgears about 21ms. As soon as you stack a couple of
> > switches you are talking 26ms vs 42ms extra delay in the path!
> 
> There is then only 8 usecs between the two switches, how on earth would this
> make any difference to the voice path at all? Let alone induce any echo... 
> 
> Obviously the originally poster didn't understand the difference. And based
> on this, he's probably advising people not to use Netgear switches for
> voice, oh dear.  
> 
> 

Agree , previous statement was incorrect and I should probably not post
late at night ;-)
A few microseconds delay in the path obviously doesn't cause extra echo.
Thank you for pointing that out.

== Conrad