Cisco 2600 VPN Class-map QOS Priority

[pgordemer]

I have 2 remote offices that connect through Sonicwall Hardware VPN with Cisco 2600 routers. The VPN is done in the Sonicwall, not in the Cisco routers. Our Avaya phone system connects through the VPN's

I want to prioritize the voice and since voice is packeted inside the VPN before it hits the router, is it safe to say that if I priortize the IPSEC VPN traffic, that I am effectively prioritizing the voice traffic.

Would this work? Assuming T1 speeds

class-map match-any SONICWALLVPN
match protocol ipsec

policy-map VPNQOS
class SONICWALLVPN
priority 768
class class-default
fair-queue
random-detect

interface serial0/0
service-policy outbot VPNQOS

Thanks
Phil Gordemer
ARH Associates