Re: [codec] #16: Multicast?
Koen Vos <koen.vos@skype.net> Sun, 09 May 2010 21:36 UTC
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Message-ID: <20100509143636.21296os5ryogl1ic@mail.skype.net>
Date: Sun, 09 May 2010 14:36:36 -0700
From: Koen Vos <koen.vos@skype.net>
To: "Raymond (Juin-Hwey) Chen" <rchen@broadcom.com>
References: <062.7439ee5d5fd36480e73548f37cb10207@tools.ietf.org> <3E1D8AD1-B28F-41C5-81C6-478A15432224@csperkins.org> <D6C2F445-BE4A-4571-A56D-8712C16887F1@americafree.tv> <C0347188-A2A1-4681-9F1E-0D2ECC4BDB3B@csperkins.org> <u2x6e9223711004210733g823b4777y404b02330c49dec1@mail.gmail.com> <000001cae173$dba012f0$92e038d0$@de> <r2q6e9223711004211010gfdee1a70q972e8239fef10435@mail.gmail.com> <001101cae177$e8aa6780$b9ff3680$@de> <t2t6e9223711004211119i6b107798pa01fc4b1d33debf1@mail.gmail.com> <002d01cae188$a330b2c0$e9921840$@de> <CB68DF4CFBEF4942881AD37AE1A7E8C74AB3F4A017@IRVEXCHCCR01.corp.ad.broadcom.com> <4BD11C50.2020206@usherbrooke.ca> <CB68DF4CFBEF4942881AD37AE1A7E8C74AB3F4A287@IRVEXCHCCR01.corp.ad.broadcom.com> <002c01cae939$5c01f400$1405dc00$@de> <CB68DF4CFBEF4942881AD37AE1A7E8C74B903454B3@IRVEXCHCCR01.corp.ad.broadcom.com>, <009901caede1$43f366d0$cbda3470$@de> <BCB3F026FAC4C145A4A3330806FEFDA93AB072BCC6@EMBX01-HQ.jnpr.net> <CB68DF4CFBEF4942881AD37AE1A7E8C74B90345C0D@IRVEXCHCCR01.corp.ad.broadcom.com> <20100507144856.171013mxhy3wdfbc@mail.skype.net> <CB68DF4CFBEF4942881AD37AE1A7E8C74B90345CCF@IRVEXCHCCR01.corp.ad.broadcom.com>
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Cc: "codec@ietf.org" <codec@ietf.org>
Subject: Re: [codec] #16: Multicast?
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Hi Raymond, I can still only come to one conclusion: For typical VoIP applications, Moore's law has lessened the pressure to reduce bitrates, delay and complexity, and has shifted the focus to fidelity instead. This trend is also visible in recent ITU-T standards like G.718, G.719 and G.729.1. Some exceptions to the rule may exist, but, like ITU-T, we don't need to cover every imaginable use case in one standard. All in all I'm happy with the current requirements document, and it's unclear what specific changes (besides a Bluetooth mode) you have in mind...? best, koen. Quoting "Raymond (Juin-Hwey) Chen" <rchen@broadcom.com>: > Hi Koen, > >>> I wouldn't be surprised if the total VoIP users worldwide exceed 100M, >>> probably significantly. > >> Correct, Skype alone has > 100M active users... > > [Raymond]: I knew Skype has hundreds of millions of subscribers. My > comment above was specifically referring to the non-computer-based > VoIP subscribers where a physical telephone set is involved in a > VoIP phone call. Sorry for not making it clear. > >>> Most of these are still narrowband. > >> No: super-wideband. > > [Raymond]: See my comment above. For those VoIP phone calls that > involve at least a physical telephone set, most of them are still > narrowband calls today. I trust that what you said (super-wideband) > must be correct for computer-to-computer calls since Skype dominates > that market there and you know that market better than I do, but I > am talking about something totally different here. > >> Are IP phones that come on the market today still using only >> narrowband? That must be a quickly reducing segment, no? > > [Raymond]: Many enterprise IP phones shipped today indeed have > wideband (16 kHz) capabilities. However, a lot of enterprises may > still configure them to do only narrowband calls. Even if some > enterprises do enable wideband calls on these phones, wideband calls > are typically only available for IP-phone-to-IP-phone calls between > IP phones in their own corporate network. The moment an employee > dial out of the corporate network, it's essentially all narrowband. > > There are some wideband cell phone trials in Europe. However, when > I spoke to a veteran in the cell phone industry, his assessment was > that the up-take on wideband cell phones would be pretty slow, and > the narrowband cell phones would be here to stay for a VERY, VERY > long time. He said even today we still have to support the very > first digital cellular standard codec, the 13 kb/s GSM Full-Rate > codec, about 20 years after it came out. His point was that > narrowband cell phones would not go away for a long, long time. I > guess similar things can be said for narrowband land-line > telephones. > >> I do agree that "we shouldn't completely ignore narrowband." > > [Raymond]: Glad that we have an agreement here :o) > Have a good weekend. > > >
- [codec] #16: Multicast? codec issue tracker
- Re: [codec] #16: Multicast? Colin Perkins
- Re: [codec] #16: Multicast? Christian Hoene
- Re: [codec] #16: Multicast? Marshall Eubanks
- Re: [codec] #16: Multicast? stephen botzko
- Re: [codec] #16: Multicast? Colin Perkins
- Re: [codec] #16: Multicast? Colin Perkins
- Re: [codec] #16: Multicast? stephen botzko
- Re: [codec] #16: Multicast? Christian Hoene
- Re: [codec] #16: Multicast? stephen botzko
- Re: [codec] #16: Multicast? Marshall Eubanks
- Re: [codec] #16: Multicast? Christian Hoene
- Re: [codec] #16: Multicast? stephen botzko
- Re: [codec] #16: Multicast? Christian Hoene
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Jean-Marc Valin
- Re: [codec] #16: Multicast? Koen Vos
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Mikael Abrahamsson
- Re: [codec] #16: Multicast? Jean-Marc Valin
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Koen Vos
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? stephen botzko
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Koen Vos
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Mikael Abrahamsson
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Mikael Abrahamsson
- Re: [codec] #16: Multicast? (Bluetooth) Koen Vos
- Re: [codec] #16: Multicast? Koen Vos
- Re: [codec] #16: Multicast? stephen botzko
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Koen Vos
- Re: [codec] #16: Multicast? (Bluetooth) Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? (Bluetooth) stephen botzko
- Re: [codec] #16: Multicast? Christian Hoene
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Christian Hoene
- Re: [codec] #16: Multicast? Christian Hoene
- Re: [codec] #16: Multicast? (USB) Roni Even
- Re: [codec] #16: Multicast? codec issue tracker
- Re: [codec] #16: Multicast? stephen botzko
- Re: [codec] #16: Multicast? Cullen Jennings
- Re: [codec] #16: Multicast? Mikael Abrahamsson
- Re: [codec] #16: Multicast? Koen Vos
- Re: [codec] #16: Multicast? (Bluetooth) Koen Vos
- Re: [codec] #16: Multicast? stephen botzko
- Re: [codec] #16: Multicast? Christian Hoene
- Re: [codec] #19: How large is the frame size depe… Christian Hoene
- Re: [codec] #19: How large is the frame size depe… stephen botzko
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #19: How large is the frame size depe… Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? (Bluetooth) Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? stephen botzko
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? stephen botzko
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Koen Vos
- Re: [codec] #16: Multicast? Christian Hoene
- Re: [codec] #16: Multicast? Gregory Maxwell
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Koen Vos
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Koen Vos
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Koen Vos
- Re: [codec] #16: Multicast? Koen Vos
- Re: [codec] #16: Multicast? Benjamin M. Schwartz
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] Thresholds and delay. stephen botzko
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Kevin P. Fleming
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Jean-Marc Valin
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Jean-Marc Valin
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Christian Hoene
- Re: [codec] #16: Multicast? Koen Vos
- Re: [codec] #16: Multicast? Christian Hoene
- Re: [codec] #16: Multicast? Ben Schwartz
- Re: [codec] #16: Multicast? Marshall Eubanks
- Re: [codec] #16: Multicast? Brian Rosen
- Re: [codec] #16: Multicast? Christian Hoene
- Re: [codec] #16: Multicast? Jean-Marc Valin
- Re: [codec] Thresholds and delay. Ben Schwartz
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] Thresholds and delay. stephen botzko
- Re: [codec] #16: Multicast? Christian Hoene
- Re: [codec] Thresholds and delay. Ben Schwartz
- Re: [codec] #20: Computational complexity? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] Thresholds and delay. jari.hagqvist
- Re: [codec] Thresholds and delay. stephen botzko
- Re: [codec] Thresholds and delay. Ben Schwartz
- Re: [codec] Thresholds and delay. Marshall Eubanks
- Re: [codec] #16: Multicast? Cullen Jennings
- Re: [codec] Thresholds and delay. Michael Knappe
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Koen Vos
- Re: [codec] #16: Delay factor: algorithmic delay … Christian Hoene
- Re: [codec] #16: Delay factor: algorithmic delay … Mikael Abrahamsson
- Re: [codec] #16: Delay factor: algorithmic delay … Roman Shpount
- Re: [codec] #16: Delay factor: algorithmic delay … stephen botzko
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Cullen Jennings
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Koen Vos
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Koen Vos
- Re: [codec] #16: Multicast? Christian Hoene
- Re: [codec] #16: Multicast? Jean-Marc Valin
- Re: [codec] #16: Multicast? Herve Taddei
- Re: [codec] #16: Multicast? Christian Hoene
- Re: [codec] #16: Multicast? Jean-Marc Valin
- Re: [codec] #16: Multicast? Sandy (Alexander) MacInnis
- Re: [codec] #16: Multicast? Christian Hoene
- Re: [codec] #16: Multicast? Raymond (Juin-Hwey) Chen
- Re: [codec] #16: Multicast? Roman Shpount
- Re: [codec] Suggested summary... Herve Taddei
- Re: [codec] #16: Multicast? Herve Taddei
- Re: [codec] #16: Multicast? Cullen Jennings
- [codec] Suggested summary... Christian Hoene
- Re: [codec] Suggested summary... stephen botzko
- Re: [codec] Suggested summary... Herve Taddei
- Re: [codec] Suggested summary... Christian Hoene
- Re: [codec] Suggested summary... Michael Knappe
- Re: [codec] Suggested summary... stephen botzko
- Re: [codec] Suggested summary... Christian Hoene
- Re: [codec] Suggested summary... Christian Hoene
- Re: [codec] Suggested summary... stephen botzko
- Re: [codec] Suggested summary... Raymond (Juin-Hwey) Chen
- Re: [codec] Suggested summary... Christian Hoene
- Re: [codec] Suggested summary... Herve Taddei
- Re: [codec] Suggested summary... Raymond (Juin-Hwey) Chen