[Asterisk-Users] Cisco 7960 Echo

[Mike Reiling]

Hello everyone,
	I finally got my Cisco 7960.  Seems like a very nice phone.  I have it 
configured for SIP and working with asterisk.  But, I am having some 
echo problems.  The person I call does not hear an echo, but I hear my 
own voice echo back to me about .5 seconds later (maybe a little less). 
  Does not matter if I call an internal Zap extension, or outbound over 
my X100P.  I changed the codecs, around and the one that gives the 
least amount of echo is g729a.

It is plugged in my office, but my asterisk server is in the attic, 
with a wireless link.  Could that be a problem.  There is very minimal 
latency.  A traceroute from the phone shows this:

SIP Phone> traceroute cartman
traceroute to cartman(192.168.100.3), 30 hops and 40 byte packets
SIP Phone>
    1)    192.168.100.3     10ms    1ms   10ms

The server is a celeron 433.  Should I toss a faster processor at the 
computer, or is it the wireless link?  I can't really image it being 
the wifi link, as VOIP works over the internet, with much higher 
latency.

Any suggestions?

Thanks,
Mike