Roll Call (west to east):
Pacific none, Mountain none, Central: Lance Cunningham, Charles Ganshorn CISCO, Walt Magnussen TX A&M, Eastern: Bob Dixon, Bob Curtis Rutgers, Sheila FERMIN Lab, Mike, Eastern: Ben, Terri, Mike LaHaye, Lance (bottum right).
Getting started - Walt has not gotten far in his homework, wrapping up BTOP grant work. Good news, due by next Friday.
E164 discussion summary - we were going to look at various global dialing systems for realtime communication for video and voice. Also possibility of looking at IMS and the GDS that is already out there. Charles said CISCO was proposing IME.
Walt would like someone to talk about IMS, and asked ?? (Charles) for IME overview
IME is another way to exploit 164 addressing, exploits calls across TNN to create secret so routing info across IP can be believed. Validated because they know the shared secret. Once you have the IP route, you can do whatever media. Presumption is to still have a valid number behind it.
Walt said this presents an interesting twist to what he planned to talk about today. He mentioned what 164 platforms he was looking at. Looks like we have six options to recommend and come up with what would be the best. Goal in the next six or seven meetings, with content experts brought in.
Walt asked Charles to present on the IME part, along with anyone else from CISCO.
Walt said today's meeting may be brief.
E164 is part of ICU standards that puts together the dialing process the phone companies have used the last century. Last ICU recommendation out in 2004. Recommends across the board that all dialing sequences be 15 digits. Country code, location specific code (area code), central office code and the subscriber code.
Like with internet addresses, you have North American admin number - done under asupices of FCC for north America, but contracted out for organizations. New Star has been that company. He talked about determining the owner of that subscriber and being the dialing plan admin for the U.S. Reached out to Brian Groesser this morning, said one of his contacts would (Karen Palmeri) - Walt is going to contact her to see if she'd address this group.
One approach, equilvalent to our own country code. May have some issues with dialing from - if voice and video - off our PBX unless we provided routes to that service code. Not sure what is all involved there. Or use all the phone numbers we have non assigned - likely not viable, but it would be a way to do it.
Other services like IME and IMX and ?? are ways to disperse the numbers, but numbers dispersed are E164 numbers. No matter which way you go, GDS or Gatekeeper federation would have to have E164 numbers behind them.
Charles contacted Tim Cody and New Star who runs SIP service and possibility of Internet2 getting involved. Tim was all over that, issue is in the exchange service they run, and the need to get mutual agreements to see who is looking at information and passing calls. Would the carriers play ball? Haven't been interested in the past. With each other, ok, but not with non-carrier entity.
Walt talking about a subscribed to service into their registry and you can specify who you have your numbers advertized to. Other carriers subscribed to that service doing like work, you 'd see them. On a per call basis, not a per minute basis. Both designed around SIP based calls. Whatever we do has to support h.323 world.
Charles? Talked about standard CODEC and multiplexing opposed to individual media transport per audio and video stream. Can negotiate a common media. Problem is when neither side understand the others media. Can add TIP to end point.
Protocol of originating end point mentioned. Can do SIP trunks into 323 endpoints. Their own skinny protocol. Trunk protocol between call managers may be different and without relationship. Protocol mediation device.
For telepresense, the signaling up may be different, but when all done, media encapsulation and wrap is set up the same.
Mike LaHaye asked if this implies a multiprotocol signaling box to allow interoperable data or media streams to be set up. Yes, you trunk between the different call platforms. Mike asked Charles (CISCO) if that is viable for interoperability across vendor products. LaHaye mentioned a media gateway vs. a signaling gateway.
Talk about precluding call and cascading multipoint switch used in telepresence and using a MCU for those not doing telepresence. When transcoding becomes available later this year, you can do a point to point call by engaging the transcoder - dynamically inserted to have compatible media and still have a point to point without meeting at an MCU.
Discussion about media sharing and protocols needed. Talk about the signaling conversion being easy, but the media conversion sucks up time, money and degrades the experience by inserting extra delay.
Discussion about how to get numbers validated with telco. If they are willing to do so.
Walt will send doc out - an extension of the ICU standards for E164.1 - criteri procedures for reservation assignments... 20 some pages. He will review, ask Karen to talk us through pros and cons of reserving our ouwn numbrs or using what is available on campus. Could have one single box tracking numbers.
Walt said Charles IME would do that too - it forms a peer to peer network at GoDaddy to validate you are a peer to peer.
Mike LaHaye asked if this would scale to this communities needs. Charles said yes, we don't know if there is a limit, infancy stage, but intended to be scalable to a global scope.
LaHaye asked if CISCO is routing this to provide reachability or something GM would deploy?
Charles said routing in the seed of member p2p network, with Go Daddy certificate, and those who want to participate, get an IME server and be part of the p2p network to control how much or how little info they put in. Could selectively pick. Mike could control if routes were visible by CISCO.
Charles said they have IME implement. ResearchChannel, ARnet and some part of the UWisc is participating. For voice? For video or both? Point is to do a rich media call. (Media and video presence)
Charles mentioned bleeding edge subset inside of Cisco - global voice network is back from the edge a bit, bleeding edge is starting to use the IME technology.
Walt said this sounds promising. Next meeting in two weeks. Walt will ask Karen, and asked Charles to give additional information next meeting.
Walt asked Ben if he has more questions? Ben said the plan is to have same timeslot in two weeks. Ben will have an adobe connect session for slide sharing. TO DO: BEN.
(April 1, 2:00 PM Eastern)
End 2:46 PM