[cisco-voip] Echoes after upgrades

[Ryan Ratliff]

Is this IP to IP or IP to PSTN?

The only possible echo for IP phones to IP phones (bugs aside) is acoutic
echo (the sound from the earpiece going in the mic).  If using a headset or
speakerphone, try the handset and see if this makes any difference.  You can
also get a sniffer capture from the PC port of the phone and use
Ethereal/Wireshark to extract the audio to see if the echo is being
introduced by the phone or the phone is just playing the RTP it receives.

There are quite a few docs out there for troubleshooting echo from phones to
gateways, search cisco.com.
One example...
http://www.cisco.com/en/US/tech/tk652/tk698/technologies_tech_note09186a0080
149a1f.shtml 


-Ryan 
-----Original Message-----
From: Johan Bloemhard [mailto:bloemhard_johan at silverfalls.k12.or.us] 
Sent: Friday, March 09, 2007 5:39 PM
To: Ryan Ratliff
Cc: cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] Echoes after upgrades

Yeah, I thought (it's been a long week) but as you know, when I thought I
was upgrading, I actually downgraded the phones and the echoes were there.
Now I corrected the err of my ways and am running 8.2(1) but the echoes are
still there.

Johan Bloemhard
Senior Information Technology Specialist ___________________________________
Silver Falls School District 4J
802 Schlador Street
Silverton, OR 97381
w: 503.873.6331
-----Original Message-----
From: Ryan Ratliff [mailto:rratliff at cisco.com]
Sent: Thursday, March 08, 2007 4:34 PM
To: Johan Bloemhard
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Echoes after upgrades

You UPGRADED the 7941 to 7.0.3??

Before you go any further upgrade it to 8.2(1) to get the DST fix.   
Then check your echo.

-Ryan

On Mar 8, 2007, at 1:43 PM, Johan Bloemhard wrote:

I upgraded the CM, CM OS, and 7941 phone loads and now I'm getting a weird
echo on the majority of my calls-I've attached a QRT log for your viewing
pleasure.  Nothing looks that major on the logs...



CM Details:

CM System Version: 4.1(3)sr3c



Phone Details:

App Load ID  Jar41.2-9-2-26.sbn

Boot Load ID  7941G_02070629Amd32megREL.bin

Version  7.0(3.0S)

Hardware Revision  1.0

Serial Number  INM10161AR7

Model Number  CP-7941G

Message Waiting  No



Thanks in advance for any input that you might have,



Johan Bloemhard
Senior Information Technology Specialist ___________________________________
Silver Falls School District 4J
802 Schlador Street
Silverton, OR 97381
w: 503.873.6331



<QRT Log.xls>
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