[Asterisk-Users] Cisco 7960 Echo

[Richard Tomson II]

Definitely turn it on for the x100p. I also have it on for my t100p
which is used for internal extensions. See if that helps. 
If you use the aggressive_suppressor, it basically makes it half duplex,
I have been using it that way for over a month and it works for me.
You may notice both ends can't talk at once, but most people don't talk
at the same time the other end is talking anyway.

Rich.



On Fri, 2003-03-14 at 13:24, Mike Reiling wrote:
> No, since the echo happens even when calling locally.  Should I turn it 
> on for the T100P (analog phones attached to channel bank)?
> 
> Thank,
> Mike
> 
> On Friday, March 14, 2003, at 12:18  PM, Richard Tomson II wrote:
> 
> > Have you turned on the echo cancellation on the X100P?
> > Check the zaptel Makefile. I use the Mark2 with Aggressive_suppressor.
> >
> > Rich.
> >
> > On Fri, 2003-03-14 at 10:42, Mike Reiling wrote:
> >> 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
> >>
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> >
> >
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> >
> --
> Mike Reiling
> Systems & Network Administrator
> SoftCoin, Inc.
> 2000 Sierra Point Parkway
> Brisbane, CA  94005
> 650-624-3869 - P
> 650-624-3899 - F
> 
> It might look like I'm doing nothing, but at the cellular level I'm 
> really quite busy.
> 
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