voice and data lan would like them to integrate

I have a data lan on a 192.168.x.x network and a voice lan on a 172.20.x.x I would like to be on my data network and communicate with my voice network interface. I researched and came up with a default route? if so do I put a static route on both data and voice routers or just the data router? or do I need another command to make this work. Also I will not bog down my network when this happens? my friend mentioned setting a qos command? all help appreciated!
Comments
Did I understand this correctly? Your network is like this:
And you want to be able to access 172.20.1.1 (as an example) from 192.168.1.20 (as an example)? Well, this does not really have anything to do with Voice configurations and shouldn't bog down anything. All you need is a route of some kind on both gateways to identify each other. Static will do.
In this example I used R3 as the management station with a default route to 192.168.1.1.
R3 cannot reach the Voice Router, but can reach the data router. To fix this, we add static routes on the Data and Voice routers to each other
Now R3 can reach Data and Voice networks.
Show routes on data/voice to confirm routing.
Week 1 networking stuff. Cakewalk. That is, if I understood your question correctly.
LOL.... u understood him wrong.. what he said was, HELLO WORLD!