We currently have 5 different global sites.
Each site has a different ISP providing Internet access.
They are connected via VPN
For better QoS for a VoIP implementation we need to use MPLS
My Question is can we run the service using our different ISPs or do we have to use one global service provider specifically for MPLS/VPLS? curretnly we have 5 different ISP service agreements currently which all run out at different times (but still have a way to go on the contracts).