Best practice for separate Data + Voice

[breakwaterit]

Hi,

I would like some advise on the best practice for seperating vocie and data. I am using a 2811 with a NM-ESW-16 module. I have seen examples of sub interfaces is this the best way to configure, if so are there any issues with doing this?

[gogasca]

You might check our design guide:

http://www.cisco.com/warp/public/779/largeent/it/ese/srnd.html

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_implementation_design_guide_chapter09186a0080447508.html#wp1043057

Gonzalo