Ben Teitelbaum Dennis Baron Tyler Johnson Walt Magnussen Jeremy George Spring 2005 VON San Jose, CA Partnering with Internet2 to Develop Next-Generation

Ben Teitelbaum <[email protected]>Dennis Baron <[email protected]>Tyler Johnson <[email protected],> Walt Magnussen <[email protected]>Jeremy George <[email protected]>

Spring 2005 VONSan Jose, CA

Partnering with Internet2 to Develop Next-Generation Campus Services

8 March 2004

2

Internet2 Who?

Elevator Explanation• Internet2's mission is to develop and deploy advanced network

applications and technologies, accelerating the creation of tomorrow’s Internet

Who we really are• Membership organization of 200+ US research universities• Parent 501.3c (UCAID) has board of university presidents• Project supported by numerous partnerships (government,

industry, international)

Goals• Enable new generation of applications• Re-create leading edge R&E network capability• Transfer capability to global production internet

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Internet2 Corporate Members Speaking or Presenting at VON

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Internet2 Universities206 University Members, March 2005

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High Performance Networks

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Internet2 Partnerships

Internet2 universities are recreating the partnerships that fostered the Internet in its infancy

• Industry• Government• International

Additional Participation• Over 60 Internet2 Corporate Members• Over 40 Affiliate Members• New Association Member Category• Over 30 International Partners

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Sponsored Education Group Participants

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Internet2 Focus Areas

Advanced Network Infrastructure• 10 GB Abilene backbone • Advanced regional networks • 100 MB to

the desktop • National fiber-optic facility

Middleware• Directories • Authentication • Authorization

Engineering• Multicast • IPv6 • Measurement • New Arch

Advanced Applications• Gigabit+ file transfer • High-end video • Remote instrumentation •

Distributed computation • Virtual co-laboratories • Distance learning • Integrated Communications

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Internet2’s Secret Sauce

Demographics• ~3.8 million students (tech-savvy, talk a lot, adapt easily)• And, by the way, they graduate (tech-transfer à la email)

Institutional Commitments• Internet2 members have committed to advance IP communications

and promote collaborative apps• Commitment to advance communication way beyond POTS

Connectivity• Great networking connectivity and campus middleware

– High-bandwidth, low-loss, low-jitter – End-to-end transparency (few NATs)– Emerging middleware infrastructure for authentication & authorization– IPv6 and multicast too!

Strong commitment to open standards

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Applications:Advanced Networking in Action

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Many ways to improve collaboration and communications…

• Multi-media integration• Integration with campus IT• Use of IPv6 and Multicast• Fidelity• Privacy• Survivability • Addressing• Mobility• Emergency services

Post-POTS Communications

* Drawings by VoIP user, Louis Teitelbaum (age 6)

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Scaling Advanced Real-Time Communications

BobAlice

UserCampus /EnterpriseUser WANs/MANs/LANsCampus /

EnterpriseHost Host

Network-LayerConnectivity high-performance, end-to-end IP transit

High-performance, end-to-end IP connectivity is necessary, but not sufficient

to connect Alice with Bob

?! !?

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BobAliceAlice Bob

Today: 3rd Party ASPs Provide the Missing Middleware


EnterpriseHost Host

Network-LayerConnectivity

Applications

3rd Party ASPs

Skype

high-performance, end-to-end IP transit

FWD Yahoo! …

?

However, communications is Balkanized by competing 3rd parties, who are unable to

provide strong authentication, identity management, or rich presence for their users

?

Bob Jonesemail: [email protected]: bob2_bigu.eduFWD: 654321Yahoo!: bobj26

BU

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Alice BobBobAlice

The Missing Piece:Campus / Enterprise Middleware


EnterpriseHost Host


Applications

CampusMiddleware


Identity Management,Call Routing,

Authentication,Presence



Identity management, authentication, call routing, and rich presence are best

implemented and scaled by campus / enterprise middleware

Bob [email protected]

BU

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Market Maker Role

BobAlice


EnterpriseHost Host


Applications



...or... ...or...AuxiliaryServices

Bridging,Gatewaying,Messaging,

…



CampusMiddleware


…


…


Open campus / enterprise SIP communications creates a communications

commons, creating vast new markets

ASPsITSPs

Hard / SoftClient Vendors

Proxies, Directories,Feature Servers…

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Need for New Campus Communications Services

Voice was once revenue-generating for many schools; no longer

Users have adopted consumer services to meet personal / profession needs• Cellular• Consumer IM&P (e.g. AIM, YIM, MSN)• Consumer VoIP (e.g. Skype, FWD)

How can universities develop services to:• Recapture these customers?• Enhance the campus life experience?• Facilitate collaborative research?• Improve productivity?

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Our Beleaguered CIOs

Difficult times to innovate• Tight budgets• Staff stretched by network security demands • Carrism (“IT is not strategic”)• Fear, uncertainty, and doubt over industry directions, regulatory environment, etc.

CIO’s need your help• Thinking beyond POTS migration• Understanding the value of new services• Building operationally supportable service models

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How Do We Do What We Do?

Working groups• Build testbeds• Develop prototypes, standards, and best practices• Disseminate / educate (workshops)

Infrastructure• National• Regional• Campus

Services• Abilene• Commons• InCommon

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Next Up...

Dennis Baron (MIT)• SIP.edu

Tyler Johnson (UNC-Chapel Hill)• Middleware for Videoconferencing

Walt Magnussen (Texas A&M)• Texas A&M ITEC• NG911 Project

Jeremy George (Yale)• Presence and Integrated Communications

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SIP.edu Working Group

Goals• Grow SIP connectivity in Internet2

• Increase value proposition for end-user SIP adoption

• Promote convergence of voice and email identity

• Low entry-cost means for campuses to...

– Provide a useful service

– Get their feet wet with SIP

Means• Publishing “cookbook” with several alternative “recipes”

• Obtaining corporate sponsorship and promotional pricing– Cisco– Avaya

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Why Phone NUMBERS?

Users should not be burdened with device addresses, when it’s people they really care about

Addresses should be mnemonic and empower enterprises to manage the identities of their users

sip:[email protected]

It’s time to put E.164 phonenumbers behind us!

A.G. Bell did not say:

“+1-617-252-1232, come here. I need you!”

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SIP.edu Architecture

SIPProxy

DNSSIP-PBXGateway

PBX

INVITE (sip:[email protected])

INVITE(sip:[email protected])

DNS SRV query sip.udp.bigu.edu

telephoneNumberwhere mail=”bob”

PRI / CASbigu.edu

CampusDirectory

SIP User Agent

Bob's Phone

Proxy Partnerships

Gateway Partnerships

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DNS

INVITE (sip:[email protected])DNS SRV query

sip.udp.bigu.edu

bigu.edu

SIP User Agent

locationDB

REGISTER(Contact: 207.75.164.131)

INVITE (sip:[email protected])

SIPProxy

Bob's SIP PhonesSIP

Registrar

IP Voice, Video, IM, ...

If Bob has registered, ring his SIP UAs; Else, call his extension through the PBX.

SIP.edu Architecture (real soon)

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Campus Deployments

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Future Directions

Support models for student/faculty UA registrations

• Let them come with any SIP appliance or soft-phone• Support for advanced media-video, IM, wideband audio, etc.

Interdomain SIP authentication

Voice SPAM prevention

Interoperability with other SIP services

PSTN Caller-ID integration

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Partnership: GDS

A Global Dialing Scheme that uses H.323 to interconnect hundreds of universities and research networks for VoIP and video conferencing

Vendor partnerships promoted the development of scalable H.323 routing from

• RADVISION• Cisco• GNU (open source)• VCON• Polycom• First Virtual• Tandberg

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Partnership: ViDeNet

Interconnecting hundreds of universities and research networks using GDS formed an international community for video conferencing

• Sharing knowledge• Providing leadership and direction to the community at large• Enabling inter-institutional conferencing• Unearthing issues that are key to scalable technology, such

as global routing issues, directory services and federated security.

This project grew the market for IP video conferencing

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Partnership: H.350

Provides an enterprise or carrier with a standardized way to store and access conferencing information including VoIP, video and IM.

Directory Services for:• Multimedia conferencing• H.323• H.235• SIP• Non-standard protocols• Call preferences (forwarding)• XMPP (jabber) in draft

Developed in partnership with

• RADVISION• Tandberg• Polycom• VCON• Internet2 Video Middleware

Group• National Science Foundation

Internet2 partners were first to market because of early test beds and access to working code and conceptual understanding

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TAMU ITEC

ITEC.tamu.edu

Established July of 2004

One of four Internet2 Technology Evaluation Centers

Focus on VoIP and Information Assurance

Housed at Research Park, TAMU

Supporting Vendors• Agilent• Alcatel• Anritsu• Broadsoft• Cisco• IPTel• IXIA• Nortel• Pingtel• Siemens• Shoreline

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NG911 Project

NTIA-funded project to build out IP-enabled PSAPs using the SOS call architecture

• Location information pushed to User Agent (SIP phone) which in turn reports location to PSAP

• Cisco to support DHCP extensions in phones• Will compare existing Phase II location services to Proposed

I911 architecture.• Adding graphical information to 911 call • Showing ability to reroute call to alternate PSAP • Will provide training to State Emergency Communications

Coordinators

Demo planned 1st week of May in DC

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NG911 Project Partners

Academic• Texas A&M University

• Columbia University

• The University of Virginia

• Internet2

Corporate• Cisco

• Nortel

Association• National Emergency Number

Association (NENA)

Government• The State of Texas

Commission on State Emergency Communications (CSEC)

• The State of Virginia Division of Public Safety Communications of the Virginia Information Technologies Agency (VITA)

• Brazos County Texas E911 District

• City of College Station, Texas

32* gray features in progress.

911112

sip:sos@domainw/location or w/out location

geo location

POTS/Wireless Network

IP Network

911

IP Gateway

sip:sos@domainwithout location

Envinsa Server

sip:psap@domainwith location

location

GeoLynx Display

ALI ServerDHCP Server

DNS Server**

DHCP InformMAC Address

Location Info

TCP Socket Telephone Number

PSAP Info

HTTP SOAPLatitude/Longitude

Location Info

VerifiedLocation Info

civil location**

Prototype

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Emergency call conferencing

INVITE

3rd partycall control

INVITE

INVITE

REFER

REFER

REFER

Conferenceserver

PSAP

Recorder

Firedepartment

HospitalPSAP brings all related parties into a conference call

INVITE

media info

INVITEmedia info

Caller

INVITE

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Goals and Objectives

American Distance Education Consortium (ADEC)Tachyon Networks, Inc.Internet2 Technology Evaluation CenterDepartment of TelecommunicationsTexas A&M University, College Station, TX 77843

ADEC VoIP Beta Testing

Contact: Walt Magnussen Email: [email protected] http://itec.tamu.edu


• Conduct instrumented tests of Tachyon’s VoIP capability.

• Determine optimal configuration parameters and assess performance over satellite links for VoIP equipment from a variety of vendors.

• Monitor field tests at multiple ADEC sites in a normal operational environment.

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•Call is placed from SAT phone to LAN phone

•Contending data is also transmitted over satellite link

•Voice and contending data travels from Tachyon facilities in San Diego to the Internet2 network via the San Diego Supercomputing Center

•Voice and data gets routed to Texas A&M University Network

•Voice and data reaches the ITEC LAN switch

•Data Quality Analyzer measures packets lost over the entire network

•Voice Quality Tester takes transmitted voice and received voice then returns back a score (MOS) ranking the call quality

Concept and Design

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Tachyon Satellite Indoor UnitsLab Testing Setup

Tachyon Satellite Antenna

Graduate student Karthik Kannan places a call from the satellite phone to the local network phone.Packetized voice conversation travels to Tachyon indoor units.

Packetized voice conversation is converted to an RF signal to be transmitted over the satellite antenna.

Lab Implementation

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VoIP Phone Codec TestingInternet2 Technology Evaluation CenterDepartment of TelecommunicationsTexas A&M University, College Station, TX 77843



•Evaluate various VoIP codecs

•Compare various vendor implementations of the codecs

•Research Codec Testing Algorithms

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Cisco 3640 Router

Cisco 2950 Switch

Cisco 2950 Switch

IXIA Traffic Generator

Anritsu - Network Analyzer

IP Phone IP Phone

10 Mbps

10 Mbps

100 Mbps 100 Mbps

10 Mbps

10 Mbps

1000 Mbps (Copper )

1000 Mbps (Copper)

Agilent VQTAdapter Adapter

Handset Cord

E&M E&M

Handset Cord

•Ixia traffic generator loads one side of the network with generic TCP traffic.•Call is placed from one IP phone to the other.•Anritsu Data Quality Analyzer measures packet loss between the two phones.•Agilent VQT transmits audio file though one IP phone and receives the audio file with potential missing packets though the other IP phone.•VQT then compares the two audio files and returns a call quality score (MOS).

Network Lab Setup

Above: Graduate students Clark Xu Yang and Karthik Kannan analyze results from voice quality test.

Design and Implementation

Network Diagram

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G.723/G.729 Codecs

0.75

1.00

1.25

1.50

1.75

2.00

2.25

2.50

2.75

3.00

3.25

3.50

3.75

4.00

0% 5% 10% 15% 20% 25% 30% 35% 40% 45% 50% 55%

Packet Loss

MOS (PESQ LQ)

Cisco G.729

Pingtel G.729

Siemens G.723

G.711 Codecs

0.75

1.00

1.25

1.50

1.75

2.00

2.25

2.50

2.75

3.00

3.25

3.50

3.75

4.00

4.25

4.50

0% 5% 10% 15% 20% 25% 30% 35% 40% 45% 50% 55% 60% 65%

Packet Loss

MOS (PESQ LQ)

Cisco G.711

Pingtel G.711

Siemens G.711

Pingtel GIPS G.711

Results and Conclusions

•G.711 codec provided acceptable audio quality (MOS >3.0) up to 5% packet loss.•GIPS codec significantly outperformed G.711 before declining in audio quality at 15%packet loss.

•G.729 codec degraded at a faster rate when packet loss exceeded 5%•Higher bandwidth applications such as LANs or MANs should use G.711 as default

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Paths-in-the-Snow Engineering

“We have a rare chance to get VoIP right… so don’t blow it.”

- Jeff Pulver, Fall 2004 keynote

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Rich Presence

CommunicationThat is:

Faster Cheaper Better

Quieter!

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You Must Be Able to Get There From Here!

Balkanization and walled garden deployments may be the biggest threat to fulfilling the promise of IP communications

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Disruptive Innovation

Rich Presence

Integrated Communication

Automated Location Based Services

Win/Win opportunities for vendors and users

Ford, HP, Microsoft, Wave3Software, Xten

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Documents

Ben Teitelbaum Dennis Baron Tyler Johnson Walt Magnussen Jeremy George Spring 2005 VON San Jose, CA Partnering with Internet2 to Develop Next-Generation