We are using a cloud based VOIP service provider for our phone system. We are using non-cisco (Mitel) phones. So basically phones are connected to access-switch and then they go out to core-switch and then to edge router and out to internet to cloud service provider for call routing. We have been having quality issues and they want us to implement QOS on our network for voice.
How do I go about this? Should I use AutoQos? Do i have to configure QOS on each device in the path (access-switch, core-switch and edge-router)??
Any configuration examples would be of great help.