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Re: [EFM] TDM circuit emulation


I would be interested in the economics of the efforts that I have been 
seeing.  With the new chip sets available to build narrowband/wideband 
cross connects, the cost per T0/E0 per port is going to be very low for the 
direct simple implementations.  With the issue of jitter compensation, 
clock tolerance, service overhead, etc, I am nor sure that TDM emulation 
will pay for itself outside of it being part of other services.  The real 
problem is that most requirements for TDM emulation are for "Private Line" 
type of services, which running over packets/frames intermingled with other 
services and/or other customer's, traffic is hard to qualify as "Private 
Line" other than name only.  It will be interesting to see how this works out.

Thank you,
Roy Bynum
Orbital View LLC

At 12:39 AM 12/10/2001 +0900, ??? wrote:

>What do you think of T1/E1 and T3/E3 circuit emulation over EFM?
>Some vendors have announced TDM integration over IP.
>It might be some problematic in cost/performance due to cost of
>delay/jitter compensation. And how about supporting resiliency?
>Jangrai Roh