I thought 768Kbps was the minimum you needed NOT to use LFI....... at
768Kbps, it takes ~15ms for a 1500byte frame to be put on the line. So even
if a couple 1500-byte ethernet frames came between your voice frames, it
would wouldn't be too bad....... but depending on the queuing method, even
at 768Kbps, the regular ethernet traffic could indeed cause a problem.......
you could use a priority queue to make sure that all the voice traffic
*always* goes through before any of the other traffic, but from what I
understand the LLQ is much better for these purposes.
Mike W.
"Brian" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> What codec are you using? If the speed of the link is T1 or less I would
> definitly do LFI. Otherwise large packets (1500 bytes) could be starving
> the voice from the minimum latency that it needs.
>
> Brian
>
>
> On Thu, 31 May 2001, Amit Gupta wrote:
>
> > Hi Everybody,
> >
> > I have configured the following parameters on the
> > serial interface for VoIP.The quality of the calls is
> > not very good during working hours you can feel some
> > delay/small interruptions while using it.
> >
> > interface serial 0
> > ip tcp header-compression iphc-format
> > no ip mroute-cache
> > no fair-queue
> > ip rtp header-compression iphc-format
> > ip rtp priority 16384 16383 64
> >
> > Could anybody suggest any other alternative to improve
> > the quality.
> > Will removing the compression help ?
> > Do I need to have something like Link Fragmentation
> > and Interleaving configured.
> >
> > Thanks
> >
> > Amit
> >
> >
> >
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>
> Brian Feeny,CCDP,CCNP+VAS Scarlett Parria
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