[cisco-voip] Nortel phones on Cisco Swtich

[Chris Ward]

Hi Morgan,

I am not a switching QoS expert, so I will let someone else answer those
specific questions, but I do want to talk about the audio quality issue you
are talking about. Typically, quality issues like static or echo are analog
problems meaning they are caused by DSPs or analog lines. Basically, any
device that processes voice in analog form rather than packetized. They
won¹t usually be caused by IP/QoS related issues.

Audio quality issues like delayed audio, jitter, stutter, and audio that
cuts in and out are more likely to be caused by QoS issues.

QoS is still very important, but I want to make sure you are focusing on the
right area. The QoS SRND has all you would need to know about QoS design
suggestions and even specific examples for Cisco switches:

http://www.cisco.com/en/US/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRND/Qo
S-SRND-Book.html

HTH

Chris Ward 

From: Morgan Andreas <morgan.andreas at gmail.com>
Date: Thu, 12 Feb 2009 09:48:25 -0600
To: <cisco-voip at puck.nether.net>
Subject: [cisco-voip] Nortel phones on Cisco Swtich

I have a Nortel BCM200 phone system w/ I2002 & I2004 phones. We are needing
to configure QOS on the 3560Gs they have in place for their Nortel phones.
They are currently complaining of static on all the phone lines including
their intercom system (thru the Nortel phone system). We have them Vlan'd
out (voice/data) but not sure of the commands to enable the QOS on switch
for the phones. Does anyone happen to have any incite as to what needs to be
done in order to enable the QOS for these phones? Any help would be
appreciated.

Thanks


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