Copyright © 2003 Avaya Inc. All rights reserved The Promise of SIP Inter-personal communications...
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Transcript of Copyright © 2003 Avaya Inc. All rights reserved The Promise of SIP Inter-personal communications...
Copyright © 2003 Avaya Inc. All rights reserved
The Promise of SIPInter-personal communications
April 20, 2004
Bruce Mazza
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• Today’s demands• Technology is a differentiator in attracting top talent to campuses
• Geographically dispersed teams “virtual teaming”
• Increasingly mobile students, researchers, professors and administrators
• Faster response to research colleagues and access to experts
• More and more collaboration
• Reliable and resilient Communications
• Time is finite. • “Your time” = Research Time = Grant deadlines, quality of research
• Are users equipped for this world?• Multiple phones, devices, mailboxes…
• Different access methods at different times
• Phone tag, email tag, insecure “Internet” instant messaging, unintegrated wireless
• What if it all worked together!
• Today’s demands• Technology is a differentiator in attracting top talent to campuses
• Geographically dispersed teams “virtual teaming”
• Increasingly mobile students, researchers, professors and administrators
• Faster response to research colleagues and access to experts
• More and more collaboration
• Reliable and resilient Communications
• Time is finite. • “Your time” = Research Time = Grant deadlines, quality of research
• Are users equipped for this world?• Multiple phones, devices, mailboxes…
• Different access methods at different times
• Phone tag, email tag, insecure “Internet” instant messaging, unintegrated wireless
• What if it all worked together!
Challenge – The User Has Been ForgottenNeed for a user-centric communications architecture
4
Agenda
• About Avaya
• SIP Summary
• Enabling User-Centric Communication
• Use Cases
• Backup Slides
5
About Avaya
• Leading global provider of communications solutions and services that help businesses, government agencies and other institutions excel.
• #2 Worldwide in Communication Systems• #1 Worldwide in unified messaging, messaging systems,
call centers and structured cabling systems. • Spun from Lucent Technologies in 2000• Avaya Labs Research team, roots in Bell Labs• Current customers include 30% of Internet2 Member
Universities, and 90% of the Fortune 500.• Avaya Recognized as First "Fortune 500 Citizen of the
Disability World"
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Avaya and Internet2
• Avaya recently joined Internet2
• Engaging in collaborative efforts with the VoIP Working Group and Presence and Integrated Comunications (PIC):
– SIP.edu
– VoIP SIP Interoperability Study
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Agenda
• About Avaya
• SIP Summary
• Enabling User-Centric Communication
• Use Cases
• Backup Slides
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Avaya view SIP
• Session Initiation Protocol– IETF standard for communications convergence– Based on RFC 3261 and associated documents
• Media agnostic• Voice, video, instant messaging, TTY, etc.
• A message based protocol– Derivative of HTTP– Stateless
• Compare with circuit switched communications• Views communication and collaboration in the context
of a “Communication Session” between humans, not specific devices
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AttributesMedia Agnostic Routing Protocol
• SIP a text-encoded protocol based on elements of HTTP and SMTP. Designed for peer-to-peer communications, and uses a client-server (request/reply) model similar to HTTP.
• Designed to set-up, modify, and tear down communication sessions.
• SIP can support any type of communication session; it is agnostic to the content whether it is voice, video, or instant messaging.
• Stateless. Messages carry their own routing information
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AttributesLogical User Addressing• SIP provides a logical identity (Uniform Resource Indications) URI
– E.g. “sip:[email protected]” or “sip:[email protected]”
• Identity is mapped to arbitrary devices (Uniform Resource Locator) URL. User=phone, user=e-mail, etc
• Independent of physical location. Hoteling and User Mobility are native
Desktop Application (e.g. softphone) SIP
Phone
Mobile PhoneInstant Messaging Client Desk phone
Hand held IP Device
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AttributesPresence and Instant Messaging
• SIP for Instant Messaging and Presence Leveraging Extensions (SIMPLE)
• Introduces “Presence” into communications state– Based on Subscribe and Notify Events– The Body of a Notify message can be something like XML
information.
• RFC has not yet agreed on standard for presence. – SIMPLE is being used by IBM, Microsoft, Avaya, etc and is
evolving into the standard for the Enterprise market– XMPP (Jabber.org) is used by AOL, etc and is evolving into
the standard for the Consumer market– Gateways will need to exist
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AttributesSecurity• SIP Space Threats are multi-faceted. Voice, IM, Video,etc
– Identity Spoofing, Toll Fraud, DoS, Viruses, SPAM, SPIM, etc• SIP Security Profile (RFC 3162)
– Signaling channel: Transport Layer Security (TLS) hop-by-hop, identity transitive trust
– Bearer channel: SRTP is the new voice security standard offering. SIP extension allows the key exchange in order to construct the security keys.
– Multimedia security. S/MIME end-end protection (confidentiality, authentication of content) for IM, email.
• Complementary attributes
– Authorization & Policy• Authentication verifies who you are• Authorization specifies what you can do.
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ComponentsUser Agents & Servers in a SIP Network
Avaya CCS Edge Server
A@
B@
C@
A@
B@
C@
A@
B@
C@
SIP over TLS
SIPIM over
TLS
SIP Service Providers
External Domains
SIP
DCP/AnalogH.323
Telephony
SIP over TLS
4602 SIP Phone
3rd Party SIP Phone
A@
B@
C@
A@
B@
C@
A@
B@
C@
SIP over TLS
SIPSIP
H.323
IP Softphone R5(Integrated IM)
SIP over TLS
Avaya Communication
Manager
EnterpriseLAN
Avaya CCS Home Server
Avaya CCS Home Server
A@
B@
C@
A@
B@
C@
SIP UserAgent
B2B UserAgent
SIP RedirectServer
SIP ProxyServer
SIPGateway
SIPPresence
SIPRegistrar/Location
Legend
Database
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Avaya Converged Communications Server Evolutionary path, integrating old and new, Avaya and 3rd party
PSTNPSTN
sip:customer.com
sip:nj.customer.comsip:uk.customer.cometc.
“Edge” Domain Server
Domain Servers
SIP DomainsInternet, Intranet, Extranet
Service Providers
SIP DomainsInternet, Intranet, Extranet
Service Providers
Converged Communications
Server
Converged Communications
ServerCommunication
Manager 2.0Communication
Manager 2.0
SEAMLESS
Communications
IP Softphone SIP/SIMPLE Instant Messaging
IP, Wireless, Digitaland Analog Endpoints
SIP Endpoints
Multi-Vendor SIP Clients & Applications
CM Features
3rd Party SIP Endpoints
3rd Party SIP Applications
“feature server”B2BUA
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Agenda
• About Avaya
• SIP Summary
• Enabling User-Centric Communication
• Use Cases
• Backup Slides
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User-centric Communications ArchitectureExpanding integration with secure SIP-based services
• Architecture focus shifts to user– Users not devices, enabling user mobility – User identity, presence, rules, routing
• Unified Access– Enhanced softphones, phones, PDA apps– Increased endpoint intelligence– Integrate with speech, web, wireless
• Application integration– SIP is a key “glue” between business and
communications applications and endpoints.
– Along with XML and Web Services
• Communication Services– Secure SIP-based integration layer to be
leveraged across Avaya portfolio– Natural evolution from current products– Open standards-based APIs
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What roles does SIP play in enabling user centric communications?
• Increases scalability to reach more users• Business Continuity through distributed topology and
stateless communications• Glue between legacy and non-legacy devices, application
servers, networks.
• Rich Presence and Instant Messaging
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Scalability
• SIP is inherently scalable– Signaling only – no media
– Session stateless
• Almost eliminates resource consumption– 100 cps = 360,000 BHCA
• ~7 calls per hour from user base of 50,000
• Various techniques to address traffic spikes– E.g. load balancing, fail-over, etc.
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Network Topology & Scaling(Domain & Sub-Domain Authoritative Servers)
Sub-Domains
Domain company.comINVITE sip:[email protected]
Edge proxy
Mapping Data
eng.company.com
User Data,Prefs….
Home proxy
INVITE sip:[email protected]
sales.company.com
Home proxy
User Data, Prefs….
mktg.company.com
Home proxy
User Data,Prefs….
2-5 Home Proxies
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Network Topology & Scaling(Domain & Sub-Domain Authoritative Servers)
Sub-Domains
Domain company.com
INVITE sip:[email protected]
Edge proxy
Mapping Data
eng.company.com
User Data,Prefs….
Home proxy
mktg.company.com
Home proxy
sales.company.com
INVITE sip:[email protected]
Home proxy
User Data, Prefs….
User Data,Prefs….
2-5 Home Proxies
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Business Continuity / Survivability• Active / standby failover
• Shared virtual IP address:– Standby server monitors the liveness of the Active
server
– All state updates are replicated
Proxy / Presence
SIP
SIP phone
Softphone
Proxy / Presence
ReplicatedState
DNS
SIP phone
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Business Continuity / Survivability– Standby takes over IP address on detection of Active
failure
– “Original Active” becomes Standby on restart and synchronizes missed data updates
Proxy / Presence
SIP
SIP phone
Softphone
Proxy / Presence
ReplicatedState
DNS
SIP phone
X
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Convergence Glue
• SIP is the glue between legacy and non-legacy devices, application servers, networks.
• Promotes interoperability of applications, networks, vendors.
– SIP’s text-based structure greatly simplifies interoperability between different vendor implementations by making it easier to interpret messages.
• Supports mobility of devices• More intelligent endpoints and applications• Allows customers to evolve rather than forklift
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B2BUA
• SIP Proxy gets requests to or from users. Can’t do mid-call processing
• However, the proxy can hand requests to feature servers (B2BUA) for additional processing,
• Crucial to provide end-to-end tracking of the call state, mid-session manipulation and control (I.e. media transcoding),
• Mechanism for integration with advanced and legacy applications.
– Advanced telephony
– Call Center, etc.
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Evolutionary Strategy provides Investment Protection
SIP-enabled Avaya™ Communication Manager
B2BUA
IP phones
SIP Origination / Termination Network
PSTN & MobileNetworks
TDM phones IP Softphone R5
Avaya™ Converged Communications
Server
SIP
SIP
SIP to SIP routing
SIP
4602 SIP Phone
SIP
SIP
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SIP Telephony Feature Support (SIPPING 16)
• Call hold
• Music on hold
• Attended / unattended transfer
• Call forwarding – unconditional / busy / no answer
• 3-way conference
• Find me
• Call forward
• Call waiting
• Automatic redial
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Additional Telephony Features via B2BUA with Avaya Communication Manager
• Active appearance select• Automatic call back• Automatic call back cancel• Call forwarding all• Call forwarding busy/no answer• Call forwarding deactivation• Call park• Call park answer back• Call pick-up• Conference on answer• Calling party number block• Calling party number unblock• Directed call pick-up
• Drop Last Added Party• Exclusion (Toggle on/off)• Held appearance select• Idle appearance select• Last number dialed• Malicious call trace activation• Malicious call trace deactivation• Manual signaling• Priority call• Send all calls enable • Send all calls disable• Transfer on hang up• Transfer to voice mail• Many more…
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• Researchers and Educators depends on knowledge in distributed reservoirs of information
• Dependencies on geographically dispersed research teams and distance learning
• High levels of collaboration are needed
• Continuous cost reduction
• Develop home grown applications to fulfill specific needs
Drivers for Presence and IM in Education
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• Available to talk now• Available via IM only• Traveling • Working off-site• Not available
An End to Phone Tag• ‘Communication Sessions’ are based on “Presence” This helps
dictate how you might want to communicate with that person.
• I.e. the publication of your willingness and ability to communicate
– Note that Presence publication is selective
Voicemail
Softphone
IM Client
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Avaya IPSoftphone
SIP/SIMPLE Presence & Instant Messaging
ENTERPRISE BUDDY LIST
SIP-enabled Avaya Communication Manager
On-hook / Off-hook
Desk phones
Avaya Converged Communications Server
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Softphone
Features Leveraged with Presence
• “Click-to-conference”
Communication Manager
IP phone TDM phone
CCS Home Proxy(incl. Presence & Registrar)
User at the airport on a softphone
SP SIP Network
SIP
Media
SIP phones
“I want to have a conference with 4 other people who are giving ‘Available’ Presence indications”
SIP Conference Server
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Avaya Vision of Presence • Presence Server.
– Subscribe to a network based buddy list. – Collects information from applications about presence state of
devices that it manages. • Vision – Network-based Presence
– Your phone has a presence state– Your Desktop calendar has a presence state– Your Wireless LAN card has a presence state– IM client– Cell Phone– Hard phone
• Aggregate a Users total presence state from a plethora of different devices• Implement User Policy in the network. Control the availability of presence
information.
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Avaya Vision of Presence
• Example: Define new boundaries of Presence– Old World – “Busy” used to mean that a particular phone
was off hook.
– New World – Busy may mean that a user is off-hook on a telephone, typing an e-mail, in a meeting, or whatever else that User’s policy is setup to describe as busy.
• Use presence to affect call flow – Old World – Call Forward on Busy/No Answer
– New World – Call Forward on Busy/No Answer will have a whole new meaning.
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Personal Profile Manager
• Concept is to manage and store personal directory information – Accessible from any client or endpoint– Available to applications requiring directory access
• Permissions Management– Manage access to communications state
• Selective presentation of presence and availability
Converged Communications Server (includes Personal Profile Manager)
Directory leveraged by all SIP-enabled devices and applicationsSIP
Manage Personal Directory and Permissions Management preferences
SIP Presence NOTIFY
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Integration with Desktop Tools
• Microsoft & Lotus competences:– Desktop Collaboration, email, calendaring, to-do lists, contact
lists etc.
• Avaya’s competences:– Telephony and voice messaging are key convergence features
• Especially multi-party conferencing
• Points of Integration:– Combining application state and communication state
– Integrating calendar data into routing decisions via presence
– Instant Messaging
– UM currently integrated with email from both vendors
36
Agenda
• About Avaya
• SIP Summary
• Enabling User-Centric Communication
• Use Scenarios
• Backup Slides
37
Concept: Auto Conferencing based on Availability
Communication Manager
IP phone TDM phone
Converged Communication Sever Home Proxy
(incl. Presence & Registrar)
Researcher at University 1 Abilene
SIP
Media
Researcher at University 2
“I want to automatically launch a conference today with 4 specific researchers as soon as they all give ‘Available’ Presence indications”
SIP Conference Server
Researchers at University 3
Researcher in Field on 802.11
wireless device
Presence Server Automatically detects desire presence state
Conferences all parties together. and
Voice Call is recorded
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Concept: Hospital Presence and Notify
2. Physician enters his notification and
presence preferences into self-service portal
4. Lab tech enters test results into patient records
management system
MedicalInformationSystem
Avaya CCS
5a. Records management system
sends event to Notification App
5b. Or, alternatively, App polls records management system
for updates
1. System Administrator sets up
notification rules in Notification Application
3. Patient undergoes a
series of medical tests
6. Based on the Physician’s calendar, he is Not Available …a little too busy!
7. Presence server status allows call routing to on-call
physician and reserves resources
on a Pre-surgery Video Conference.
8. On-call physician accesses test results
and immediately is put into a video and IM
conference with Available experts from
around the nation.9. Notify App system
maintains a record of the notification and response and
conference. All encrypted
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Concept: Converged Seamless Mobility Architecture
Wireless LAN Infrastructure
Motorola Dual 802.11/Cellular Handset
PWN
Outside the Campus Within the Campus
Communication Manager-enabled
IP-PBX and SIP Presence Server
Mobility Manager
Jane is taking a call on campus on her 802.11 wireless device, but drives to the city for dinner plans.
Thanks to Presence Information, as Jane walks out to the parking lot, her call is automatically handed to the Public Wireless Network
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Communications Convergence VisionS
ystem M
anag
emen
t
SIP Infrastructure
SIP Clients & Endpoints(including Avaya & 3rd Party)
3rd P
arty Ap
plicatio
ns
and
Web
Services
Un
ified C
om
mu
nicatio
ns
Ap
plicatio
ns
Fu
ture A
vayaA
pp
lication
s
Perso
nal W
orksp
ace M
anag
er
Co
ntact C
enter
Ap
plicatio
ns
Co
mm
un
ication
Man
ager
(Telep
ho
ny F
eature
Server)
41
Agenda
• About Avaya
• SIP Summary
• Enabling User-Centric Communication
• Use Scenarios
• Backup Slides
42
Avaya view on SIP Interoperability
• Avaya is an active participant in IETF standards for SIPPING and SIMPLE– Reserve the right to implement IETF draft standards as required
– Will respond to market requirements to support certain SIP “extensions”
• Leveraging a commercial SIP framework as basis for development
• Avaya participates in SIPit (bi-annual SIP interop convention)– Capabilities tested:
• Basic calls; Presence; IM
– Vendors tested with:
• Alcatel, AT&T, AudioCodes, AudioTest, Broadcom, Cisco, Compaq, Digaco, dynamicsoft, HCL, Hughes, Indigo, Mediatrix, Mitel, NIST, Nokia, Nuera, Pingtel, Polycom, Radcom, Radvision, Siemens, SNOM, Sylantro, Telogy, TonesTest, Trillium, Vovida, Webley, Wipro, Worldcom
• Will be leveraging standard test tools in development (e.g. Navtel)
• Planning to pursue independent certification (e.g. MierComm)
• Will certify interoperability with selected partners (e.g. Level(3))
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• Latest generation IP Softphone supporting Avaya Communication Manager 2.0
• Incorporates a SIP IM client and a presence-based contact (“Buddy”) list
– Contact directory includes both phone numbers and IM user IDs
– Tracks contact list presence information (peer to peer in Release 2.0)
– IM-to-Voice and Voice-to-IM at a touch of a button
• Expands Productive Dial & Call Receipt Capabilities
– Better integration with Microsoft® Outlook® - enabling dialing from contact lists and screen pops that offer contact information when calls from contact list members are answered
– LDAP Directory dialing– Click and Dial from Web browsers
IP Softphone R5Integrated Voice & Instant Messaging
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Avaya IP Softphone 5.0Integrating voice & instant messaging
• Adds presence, instant messaging – Contact directory with phone numbers
and IM “buddy list” IDs– Combined phone and IM presence shown– Includes call and IM logging capability– IM-to-voice, voice-to-IM at touch of a button– Delivered by Converged Communications
Server
• Full-function rich telephony– Delivered by Communication Manager 2.0
• Evolutionary– Easy to add to traditional and IP telephony– Same softphone customers already deploying
• Standards-based – SIP, SIMPLE– (Roadmap: Integration with consumer IM)
45
Avaya IP Softphone 5.0Enhancing user productivity
• Softphone useable in many ways– PC with headset or USB phone device– Softphone controls IP phone– Softphone controls existing digital phone– Voice bridged out to home or wireless phone– (Softphone for Pocket PC PDA)
• Desktop integration – Click and dial from Web browser highlights– Dial from Microsoft Outlook contacts– Dial from other desktop apps through TAPI– Contact screen-pops on incoming call– Call log integration into Outlook journal– LDAP enterprise directory dialing
46
• Exceptional value– Entry level multi-line SIP-base IP phone
– Access to Communication Manager 2.0 features(extending “SIPPING 16”)
– Can be used in conjunction with IP Softphone
– List Price of $195
• Increasing choice in endpoints– Starting with market demand for lower costs– Open SIP standards enable multivendor interoperability– Actively testing third-party SIP phones and encouraging vendors to join
DevConnect program to test interoperability with Avaya applications
Avaya 4602 SIP PhoneCost effective standards-based SIP phone
47
Summary
• Converged Communications is about integrating communication context with application context
• Avaya is developing a converged communications application suite
– SIP enabled communication infrastructure– Enterprise presence infrastructure– Integrated with applications– Operate in a multi-vendor SIP environment– Deliver value add end-to-end SIP solutions
• Internet2 offers Avaya an opportunity to collaborate with thought leaders on leading edge technology for Higher Education and beyond
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Official Convergence Communication Providerfor the 2002 and 2006 FIFA World Cup™
FIFA Women’s World Cup USA 2003
© 2004 Avaya Inc. All Rights Reserved.
All trademarks identified by the ® or TM are registered trademarks or trademarks, respectively, of Avaya Inc. All other trademarks are the
property of their respective owners.