SIPquest-Intel Sept29.ppt

The Future of Enterprise Communications

Henning SchulzrinneChief Scientist, SIPquest

Associate Professor, Columbia University, New YorkSeptember 2003

SIPquest - Confidential

Enterprise Communication Needs

Factory/Plant

TeleworkersBranch Office

Mobile Professionals

Main Office

Enterprise

Evolving business models and workforce environments

Partners/Suppliers Customers

SIPquest - Confidential

The Future of Enterprise Communication

Integrated Multimedia Communication System

Enterprise

Application SharingCo Web-browsing

Instant Messaging

Video Conferencing

Audio Conferencing

Rich Presence Context Aware

Mobility & Multidevice

Scheduled & Ad hoc

PersonalizationSynchronous and

Asynchronous

SIPquest - Confidential

Overview

• Advanced enterprise multimedia communications – beyond the IP PBX next-generation VoIP

• Core characteristics and requirements• Using wireless LAN technology as an enabler for ubiquitous communications• Roaming beyond the enterprise• Challenges: E911, management, scaling, reliability

SIPquest - Confidential

Context-aware multimedia communications

• Most teams and groups need two forms of collaboration:– real-time (synchronous) telephone, ISDN video conferencing, IM– non-real-time (asynchronous) mailing lists, shared calendars, shared

document folders, project-internal web pages, …• But…

– each team or group needs to set up complex set of ad-hoc tools• difficult often, collaboration = long cc email list• access control tedious, particularly for external partners

– no integration of synchronous and asynchronous collaboration• send email of documents during meeting• versioning problems• difficult for late joiners or management to catch up

SIPquest - Confidential

Solution: integration of “phone” and “email/web” world

• Create a single, task-oriented group• Records and structures all interactions

– ad-hoc and scheduled (repeating) multimedia conferences: voice, video, text chat, guided web browsing, application sharing

– presence for coordination and presence-enabled ad-hoc conferences– bulletin board– shared, protected web pages– mailing list– access to recordings of conferences, including IM and application sharing interactions

• SIP as integrating component– multimedia communications– event notification, IM and presence– easily supports cross-enterprise collaboration

SIPquest - Confidential

Context-aware communication

• Diversity: Participants with many different devices

– temporarily only access to analog hotel phone or cell phone

– borrowed computer at remote site• Human context:

– How interruptible am I?– Where am I – home? movie theatre?

office? driving?– What time zone am I in?– How much privacy does my environment

offer?• Use “sensors” to determine context information

– data: calendars– device interaction: which device am I

using? been typing lately?– environment: badges, PIR sensors, RFID,

…

DHCPserver

458/17 Rm. 815458/18 Rm. 816

DHCP answer:sta=DC loc=Rm815lat=38.89868 long=77.03723

8:0:20:ab:d5:d

CDP + SNMP8:0:20:ab:d5:d 458/17

SIPquest - Confidential

Context-aware communications

• Working within IETF to standardize descriptions for “rich presence” information– activity, privacy, future activities– multi-device presence– assistants and associates

• Also, related to geographic location information– facilitate face-to-face collaboration– guide user to appropriate resources (“a conference room with video camera is

just around the corner”)• But needs to respect need for user control and privacy

– IETF is defining privacy policy language– allows user to control access and propagation of information

SIPquest - Confidential

Context-aware communication

• “Opportunistic communications”– old style: lug around devices – projector,

speaker phone, laptop, …– new: service discovery borrow networked

(wireless) devices in environment• video projector, echo-cancelled

microphone, plasma display, …• Move live sessions from single, mobile device to

multiple local devices session mobility• Keep configuration information even when moving

and changing devices service mobility• Many devices, one address user mobility

SIPquest - Confidential

Requirements for context-aware collaboration

• Cross-platform– users may temporarily use devices from copy service– devices from smart cell phone and hotel TV web browser to desk top PC– participants from different organizations

• Thus, importance of standards– beware of “our improved version of standard”– here, web and Internet technologies

• SIP for multimedia communications, IM, presence, events• RTSP for access to streaming media (media resources, conference recordings)• HTTP and web services for user interface, conference control and web-based

collaboration• SMTP (and related) for asynchronous collaboration• RTP for multimedia content• XML for cross-platform document sharing and whiteboards

– not just protocols, but also configuration and management

SIPquest - Confidential

Wireless LANs as a key enabler

• Ubiquitous and context-aware communications requires integrating all modes of wireless communications:

– 2G and 3G cellular networks – low-speed data, but broad coverage

– cluster of hotspots with roaming • e.g., within corporate campus or in

convention center or airport)– sparse 802.11 hotspots

• Need to be able to roam across systems:– with authentication, authorization, accounting

hand-off– real-time hand-off for on-going multimedia

conversations• maybe across devices

• SIP can support mobility even if network not fully mobility-enabled

SIPquest - Confidential

Concerns and Issues

• E-911– E-911 difficult for VoIP (and other networked multimedia)– locate nearest emergency service, not the one on the other end of the VPN– IP address does not provide location– Emergency service needs to determine user location

• efforts in North American Emergency Number Association (NENA) to provide architecture

• Management of these capabilities from a variety of devices– basic configuration via phone– human configuration via web page– automated configuration and scripting via web services and standardized configuration

files• Security, Authentication and authorization

– prevent VoIP spam• QoS for WLAN, primarily

SIPquest - Confidential

Conclusion

• Convergence is more than just the conversion of analog phones to packets– just transport convergence misses opportunities for productivity enhancements

and doesn’t solve the lack of use of most tools– need to do more than replicate dial tone

• Converge synchronous and asynchronous collaboration• Make capabilities available without configuration – but users only see tools they

need and want• Needs to work in mobile environment – 2G, 3G and 802.11

– single device and multiple mobile devices• Cross-platform and standards-based – otherwise, always fall back to least-common

denominator phone conference