Doug on IP Comm – An independent voice on VoIP, telecom, and IP Communication

Summary: 29 things I learned at the HD Communications Summit

Posted on: May 29, 2009

If you don’t feel like plowing through all of the HD Communications Summit pieces, here’s a recap of what went on.

1)       Jeff Pulver can still pull over 100 of the “right people”  to an event just after InterOp and just before the U.S. Memorial Day weekend.

2)       The baseline for a PSTN/POTS phone call hasn’t changed since 1937 or so – unlike everything else in the modern world.

3)       Pulver plans an FCC petition this fall to upgrade PSTN to HD;  digital TV provides a case justification to move to a new technology.

4)       Frequency range for a PSTN call is 300-3000 Hz

5)       AudioCodes Google Search on “HD Voice/VoIP” – Past 10 years, 190,000 hits. Past 12 months, 82,000 hits, so the trend line is going up and to the right.

6)       Depending on who’s talking, HD audio would use a range between 100-7000 Hz. Diminishing returns after 7000 Hz delivery.

7)       The tighter PSTN clips consonants.

8)       FM radio sounds better than a PSTN call.

9)       HD Connect is the working name of the HD Communications trade association Pulver is starting because a) Polycomm has a trademark on HD Voice and b) AudioCodes has a trademark on HD VoIP

10)    Everyone wants a “HD Connect” logo to put on their boxes

11)    When HD voice (generic) happens [in North America], it will happen really really fast, predicts everyone.

12)    But right now, [North American] service providers are on the fence waiting to see who jumps first.

13)    Nobody can agree on a single HD codec, but most agree we need fewer codecs and there seems to be sufficient codecs out there

14)    More codecs = more part cost, more support costs, so the fewer, the better

15)    Ain’t no such thing as a “free” codec. Support costs and potential indemnification issues lurk.

16)    Wireless and wireline will likely use different codecs because the cellular carriers need to get the most out of their leased spectrum (i.e. spectral efficiency)

17)    Transcoding will be necessary to move between HD codecs; AudioCodes is happy.

18)    North American cable companies are getting ready for HD, but until the business case is clear (i.e. “Show me the money”), they aren’t in any rush.

19)    Cable may have a leg up by locking in DECT CAT-iq as a standard so service providers can provide an end-to-end experience without transcoding or other tweaking.

20)    The Europeans are ahead of us (again).  BT, France Telecom, T-Mobile are all deploying HD today in their respective territories.

21)    France Telecom expects to be able to exchange HD voice calls with other carriers by the end of the year.

22)    Enterprises are likely to be the earliest adopters of HD. They control their own infrastructure, are deploying VoIP, HD gets rolled out as “just another app” onto the existing infrastructure.

23)    Avaya has incorporated wideband codecs in all of its phones; Polycom is adding wideband codecs to all of its phones.

24)    HD is a “killer app” when it comes to talking to a non-native language speaker and you can’t understand his/her accent.  The broader range means you can understand what someone is saying rather than having to work at interpreting (i.e. filling in the blanks) as to what they are really saying.

25)    HD on cell phones is happening – in Europe.  France Telecom is (once again) leading the way with mobile HD.

26)    Truphone says it is working with HD in the lab and is ready to roll when the time is right.

27)    Qualcomm has done demos/field trials of HD on cellular.

28)    In the trials, Qualcomm used the Swiss-army-knife of IP telephony – Digium’s Asterisk – to transcode between its 4GV-WB codec and G.722.

29)    Qualcomm is still trying to fight the EVDO/LTE battle.

Earlier pieces on the HD Communications Summit

HD Communications Summit: Pulver announces HD marketing association, FCC petition, fall event

HD Communications Summit: Codec convergence, “HD” logo take center stage

HD Communications Summit: Cable bides its time

HD Communications Summit: Islands of HD, trending upward

HD Communications Summit: HD Cellular is happening

HD Communications Summit: Analysis – Will international needs bootstrap HD voice?

Presentations at the HD Communications Summit – pictures

HD Communications Summit – A PR/marketing view

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3 Responses to "Summary: 29 things I learned at the HD Communications Summit"

The HD Communications Summit took place right before the Memorial Day holiday. :))

Thanks for helping to share the HD Communications story.

Very nice.

One correction – AM radio has nearly twice the frequency response of PSTN (i.e. AM sounds better). FM radio clocks in at 5x the frequency response of the PSTN (i.e. FM sounds much much better)

One expansion – The point of HD is not a single improvement in voice quality moving from 3.3khz to 7khz frequency response. The point of HD is kicking off continuous improvement. This is the different between the one time improvement that introduces HDTV to the world and the continuous improvement dynamic that keeps digital camera sales growing 30% year in and year out.

Thank you for your interesting article. Learned a lot new to subscribe to your news. I would wait for new articles. Good luck.

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