I am searching for some advice to my current QoS needs.
The only traffic that matters in this case is VoiP traffic. Any other traffic is fine at 'default' values. Voice traffic leading into the 6509 is marked as dscp 'EF' and I will be trusting dscp on all relevant ports.
The default egress queueing is set to 1p3q8t, which I imagine would be suitable for my needs (by setting CoS 5 to the priority queue).
The default ingress queueing on IOS 12.2(18)SXF12 is set to 1q8t. Is this acceptable, or should I change it to a queue type that has a priority (ie. 1p1q8t)?
Are there any other recommendations to ensure proper priorities are given for voice traffic?
If the voice "server" is a local LAN voice gateway that connects, analog, outside to PSTN, then yes, you're done.
If the voice "server" connects to other voice "servers" across the data network, or the voice "servers" just coordinate VoIP phones directly sending traffic to each other, and if either traffic goes across your WAN edge, then you'll likely need to insure QoS for it too.