VOIP is more overhead due to the fact that it is at layer 3 and frame relay
at layer 2. If you can do frame relay voice over that is the better way to
do it but voice over ip is more flexible. Meaning that if you have some
sites that aren't frame relay and some that are VOIP might be the way to
As best that I can remember: The voice packets over VOIP have IP addresses
and are routable. The voice packets in VOFR do not have IP addresses and as
such can traverse only the FR link. VOIP can be run over FR links. See:
http://www.cisco.com/warp/public/788/index.shtml
Where they use VOFR to ref
VoFR is layer two, L2 encapsulation, less overhead per call
VoIP is layer three, uses H.323, L3 encapsulation, larger overhead
This of course is just a nut shell difference between the two.
Oscar Rau wrote:
> Hi,
>
> How different is VOIP and VOFR? I thought IP networks are possible over Fram
Do both customers have existing VoIP and VoFR networks and what sort of
equipment do they use?
If you can connect on an IP level you should be able to use h323 as common
protocol between the two systems. Otherwise you may want to look at some
sort of Clearing house solution.
Cheers
Pat
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