The tweets presented below were sent during the HD Communications Summit, September 15, 2009. Some formatting and selective spelling correction done for readability.
Alan Percy, Director Market Development, AudioCodes
- Alan Percy, Dir Mkt Develpment, AudioCodes takes stage. How do we get to “our dream” of HD. Awareness/education one step, very important
- Percy – Feeding bloggers, formation of HDConnect necessary to share information, share our experiences
- Percy – HD community create “hype” need to show how to make it stick; demos, case studies, product intros
- Percy – Carriers announcing HD products, 1.7M cust potentially in Moldova, over 500K. Japan/OKI announced encoder
- Percy – Only handful of apps can leverage HD, but Microsoft, Broadsoft, Avaya,MailVision #Digium all using, need to evangelize more software
- Percy – HD Peering is the next hurdle, today now HD deployments are islands. Need to connect , Metcalfe’s law (More users,best network
- Percy – HD peering like fax machines in ’70s, initially islands, then more people got
- Percy – Proposal an “HD Connect Peering” committee for HDCOnnect ; Berninger says “proposing” means volunteering…
- Percy – Which voice coder? Not going to have “one universal HD coder” move to specialized coders for wireless, wireline, enterprise, hosted
- Percy – Coders expected to improve, stereo close. If only one video coder, many today’s portable video apps wouldn’t have happened
- Percy – Connecting islands, using wideband transcoder (Mediant 3000) by AudioCodes; convert from G.722 to AMR-WB
Jan Linden, VP Engineering, Global IP Solutions
- Berninger – HD event makes Linden happy, has been promoting HD for a while.
- Linden – GIPS in a lot of IP phones, endpoints, gateways
- Linden – Been using HD voice for nearly 9 years. Talk about end user experience
- Linden – Standard phone quality tinny, muffled, some sounds like S, F hard to distinguish, more difficult to understand accents
- Linden – Go through tradeoffs for HD, speech codec sets upper limits of speech quality
- Linden – Impact on HD due to Network packet loss, network jitter, latency
- Linden – Handset needs HD capable mic; at least 16 kHz sampling rate, HD capable speaker, need 16 kHz sampling
- Linden – HD voice quality enhancement need echo cancellation, noise suppression, VAD, AGC
- Linden – Implementation issues, PC limitations include not designed for real time comm, every device different, mobile device limitation
- Linden – mobile devices, limited processing, battery l;ife, OS limits access to real time VoIP, speaker/mic placement encourage echo/noise
- Linden – HD codec only half of story, must account for network impairments, environment factors in full implementation
- Linden – Quotes Rodman/Polycom CTO, “If you’re going to do [HD], do it right, it doesn’t cost extra”
Mike Eastman, VP Sales, WYDEVoice
- Mike Eastman VP Global Sales, talk about (New!) HD Softbridge
- Eastman – Leverage work done by AudioCodes, GIPS to roll out HD Conferencing bridge
- Eastman – Smaller version of bridge supports 1,000 concurrent, big version 10,000 users
- Eastman – new bridge supports G.722, G.722.1, G.722.2, iSAC, some softphones. Don’t want to transcode, but suport native
- Eastman – Intel blade server, each blade supports 1,000 users, support “geo-distributed” architecture, support full featured conf eng
- Eastman – Supporting legacy callflows via AEL; real-time I/F in SIP so speaker can see states, and web services API
- Eastman – Architecture can be set up geographic unit; send one voice stream per conference in a geo. Most traffic is light
- Eastman – New HD conferencing service, FreeconferencecallHD.com launched last week
- Eastman – Support soft phone, inc Gizmo5, CounterPath, Skype, IP Phones like Polycom, IP PBXes like #Digum Asterisk, FreeSwtich
- Eastman – Through API, can look at recorded calls, play back calls on a live call .. (hey, cool!!)
- Eastman – Softbridge supports 2 to 10,000 concurrent users
