Enabling QoS on 2600 or 1750 for voice over IPSec

We have several SOHO users that use 7940 phones behind 831/871 routers
at their homes. They connect to our HQ via an IPSec VPN connection to
our network, over their cable or DSL. The problem is with QoS --
they're having more and more trouble with callers not hearing them.

With the help of TAC we've implemented shaping and ip precedence on
their 831/871 routers, but, we also need to setup our 2600 router (we
also have a backup 1750) to recognize the precedence bits and act on
them. I've found a few guides but nothing that really hits the nail
on the head. (fyi the VPN tunnels terminate to a 3000 concentrator,
which is behind the perimeter router and an ASA 5510 (firewall only)).

Thank you for any advice -- MJ

 

Hi MJ,

You may wish to investigate Cisco's Recognizing and Categorizing
Symptoms of Voice Quality Problems:

http://www.cisco.com/en/US/tech/tk652/tk698/technologies_white_paper09186a00801545e4.shtml

Hope this helps.

Brad Reese
BradReese.Com - Cisco Network Engineer Directory
http://www.bradreese.com/network-engineer-directory.htm
1293 Hendersonville Road, Suite 17
Asheville, North Carolina USA 28803
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Website: http://www.bradreese.com/contact-us.htm