Im about to implement an SRST connection from the east coast (CUCM) to the west coast (CUCME) over our 6mb MPLS link (80ms latency). Should I use G.729 or G.711 over the WAN link? I'm reading through one book that says I should use G.729 since its a WAN, though they don't give a connection speed/latency chart. Thoughts?
The phones being used are: 7960, 61, and 65 along with communicator
G.711 provides better voice quality and less sensitive to packet loss. Using it is preferred if you have enough bandwidth. Between IP phones I recommend using G.722 codec. It provides better voice quality with the same bandwidth requirements as G.711.
thanks, I checked with our provider and they are providing (and we are paying for) full 6mb "Real-Time" Class of Service on the MPLS link, so I think we should be good. THe last part I guess is at our hand off of MPLS at each location. Here at the head end, the MPLS terminates into a Cisco 6509 and at the branch office, it terminates into a Cisco 3750. Your saying we need to apply QOS marking on the exiting interfaces at each location? Thanks
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If you have 2 ISR routers, one acting as Failover, do we need to have both the same number of SRST licenses on the 2 routers?
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