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