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Originally posted by ictelco:
Yeah its the "new" less expensive version of frame relay. I think it stands for Multi Protocol Layered Switching. It is supposed to route thru private network structure rather than the internet. In 3 years time, it has only had an issue 1 time. Absolutely no voice quality issues and with a ipgw4 it uses very minimal bandwidth. Definitely the way to go when connecting multiple locations with multiple pbx's. The two dsl locations with ip phones are only 1 phone at each location, and it works ok on that.
I get the part that the systems are linked via MPLS but there must be an internet connection as well If you have remote sites that have ip phones runninig....