There's something I'd like to know looking toward successfully implement commercial VoIP over a MPLS infrastructure.
Supporting IP QoS (DiffServ) across the core backbone and/or MPLS traffic-engineered paths is really required ? Consider a whole backbone built with high speed throughput connections, plenty of bandwidth availability and no periods of congestion!
I do believe TE tunnels (paths) are necessary for quick recovery when a node or link fails, but rather them assuming something I haven't experienced yet I'd like to listen from those who really have already successfully deployed commercial VoIP.
Best regards.
Jimmi.