Cell Relay Archive[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] voice over atm [was: Re: ppp over atm...why?]
James Carlson wrote: > > albert.e.manfredi@boeing.com writes: > > > (If you really want to get twisted, you can also use AAL5 exclusively, for > > voice CBR channels and data channels, as far as that goes.) > > Not at all twisted. Frankly, I think that using AAL-1 for voice is > pretty twisted. Each VC represents persistent state through the core > of the network. Doing that for a high bandwidth multiplexed > connection (say, a trunk between Class 5 switches) makes sense. Doing > it for each person gabbing to another does not. > there is, of course, another option and that is to use aal-2 with silence suppression. as you suggested, aal-1 for voice makes more sense than aal-5 for voice because aal-1 has less overhead. in fact, voice over atm is more efficient than voice over ip even when using aal-5. voice really is the killer app for atm because it carries voice better than ip does...the same doesn't hold true for data. -- __ ______ __ / __/ | lucent technologies, naperville il, usa _/ (_(_) / (_(_/_/_(_/ . ronald.h.davis@lucent.com "if you ain't the lead dog, the scenery never changes" -- edmund wilson |
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