RE: [EFM] On cost benefit
We have great voice quality on GSM, so long as the base stations are sync'd
to stratum clocks for hand over. US digital is pretty good too. Charges are
outrageous for rooming, but these service providers are our customers. What
goes around comes around.
Support for a sync mechanism in EFM could be a factor in success in these
markets.
Bob
-----Original Message-----
From: owner-stds-802-3-efm@majordomo.ieee.org
[mailto:owner-stds-802-3-efm@majordomo.ieee.org]On Behalf Of O'Mahony,
Barry
Sent: 24 January 2002 21:41
To: 'FEffenberger@xxxxxxxxxxxxxxxxx'; rabynum@xxxxxxxxxxxxxx;
carlosal@xxxxxxxxxxxxxxxxxx; Chou, Joey
Cc: stds-802-3-efm@ieee.org
Subject: RE: [EFM] On the Worship of Speed
Just to play devil's advocate here, the fastest growing segment of the
telephony market, namely mobile telephony, apparently has little trouble
selling in service to customers, despite long, "poor" latency.
Of course the argument goes that the "advantage factor" of mobility
counteracts the reduction on perceived voice qulaity in people's minds.
Maybe so. But I bring it up to point out that there is some quesiton, in
some quarters, as to how well a test subject's responses in a MOS testing
scenario correlate to what they're actually willing to pay for.
~~~~~~~~~~~~~~~~~~~~~~~
Barry O'Mahony
Intel Labs
Hillsboro, OR, USA
tel: +1 (503) 264-8579
barry.omahony@xxxxxxxxx
barry.omahony@xxxxxxxxxxxx
~~~~~~~~~~~~~~~~~~~~~~~
-----Original Message-----
From: FEffenberger@xxxxxxxxxxxxxxxxx
[mailto:FEffenberger@xxxxxxxxxxxxxxxxx]
Sent: Wednesday, January 23, 2002 8:06 PM
To: rabynum@xxxxxxxxxxxxxx; FEffenberger@xxxxxxxxxxxxxxxxx;
carlosal@xxxxxxxxxxxxxxxxxx; joey.chou@xxxxxxxxx
Cc: stds-802-3-efm@ieee.org
Subject: RE: [EFM] On the Worship of Speed
DSL uses ATM.
Also, DSL typically leaves the existing POTS service undisturbed,
and is most often a data-only service.
If you are talking of VoIP, then the answer to your question is "Poorly".
The slop in the network is hidden by intensive processing on both ends
of the network. Echo-cancellers and error concealment. And, of course,
no guarantee of performance. Of all people, I shouldn't have to convince
you of the problems of trying to sell such a service to customers.
Sincerely,
Frank
-----Original Message-----
From: Roy Bynum [mailto:rabynum@xxxxxxxxxxxxxx]
Sent: Wednesday, January 23, 2002 10:00 PM
To: FEffenberger@xxxxxxxxxxxxxxxxx; carlosal@xxxxxxxxxxxxxxxxxx;
joey.chou@xxxxxxxxx
Cc: stds-802-3-efm@ieee.org
Subject: Re: [EFM] On the Worship of Speed
Frank,
How does it work on 128kb DSL links with PPOE today?
Thank you,
Roy Bynum
At 09:38 PM 1/23/2002 -0500, FEffenberger@xxxxxxxxxxxxxxxxx wrote: