SIP Development: Products and Applications

1. SIP Development:Products and Applications henry.sinnreich@wcom.com International SIP ’03 Conference, Jan. 16, 2003

2. Voice Mail SIPServer PSTNPhone PSTNPhone PSTNPhone PSTNPhone SIP Phone SIP Phone PBX SIP Phone SIP Phone WorldComvBNS+ IP Network RedirectServer WAN U.S. WorldCom Network WorldComSwitchnet THE WORLDCOM CONNECTIONSM ARCHITECTURE Web-basedOperationsSupport System NetworkGateway Managed Services QOS Device Router/ Gateway QOS Device Router PVC LAN LAN PVC or T1 Firewall Firewall Customer Premises Look! No PBX! Customer Premises SIP Products and Apps

3. Voice Mail SIPServer PSTNPhone PSTNPhone PSTNPhone IPPhone IPPhone PBX PBX WorldComvBNS+ IP Network RedirectServer WAN U.S. WorldCom Network LAN LAN WorldComSwitchnet ANIMATED CALL PATH: IP PHONE TO PSTN PHONE Web-basedOperationsSupport System Sip Signaling Voice Path NetworkGateway EnterpriseGatewayor Router EnterpriseGatewayor Router QOS Device QOS Device PVC or T1 Firewall Firewall Customer Premises Customer Premises SIP Products and Apps

4. Voice Mail SIPServer PSTNPhone PSTNPhone PSTNPhone IPPhone IPPhone PBX PBX WorldComvBNS+ IP Network RedirectServer WAN U.S. WorldCom Network LAN LAN WorldComSwitchnet ANIMATED CALL PATH: IP PHONE TO PSTN PHONE Web-basedOperationsSupport System Sip Signaling Voice Path NetworkGateway EnterpriseGatewayor Router EnterpriseGatewayor Router QOS Device QOS Device PVC or T1 Firewall Firewall Customer Premises Customer Premises SIP Products and Apps

5. Access Router QoS Appliance SIP Firewall/NAT Local GWY Small Office Example PSTN Network GWY’s Hosted IP Comm’s DSL or T1 to WorldCom Can be the WorldCom Connection for all services Optional headsets for softphones Ethernet Switch Can be replaced by Virtual Local GWY PSTN lines to LEC SIP phones SIP Products and Apps

6. Access Router PBX Enterprise GWY QoS Appliance SIP Firewall/NAT Local GWY Medium Office Example PSTN Network GWY’s PBX phones Hosted IP Comm’s nxT1 to WorldCom Can be the WorldCom Connection for all services Optional headsets for softphones Ethernet Switch Can be replaced by Virtual Local GWY PSTN lines to LEC SIP phones SIP Products and Apps

7. DSL Trade-Off Examples for Data and Voice with QoS TCP (FTP, e-mail, Web) flow control UDP (voice) session counting ToS is signaled to WorldCom IP access to backbone * Additional data bursting when there is less voice SIP Products and Apps

8. QoS Appliance Example • Snapshot on how well the set policy is performing: • BW in use • BW allocated • BW bursting • Adjust bandwidth settings accordingly Note: There is no RFC for managing/policy for UDP and TCP traffic flows. Courtesy SITARA Networks SIP Products and Apps

9. On-net calls Off-net LD and International Calls Virtual On-Net remote home user appear as a v-net number Forced On-Net 9 or 10 digit PSTN number forced to On-Net VNET Integration available Local/Inbound Calls via Customer-Prem based Local Gateway Non-trusted caller support Calling features Call transfer Call forwarding – unconditional, conditional, on-screening Call Blocking Feature Blocking Find-Me with per-address ring timers Selective Call Acceptance Multiple called aliases Flexible dialing prefixes Call-by-name Internet-integrated Voicemail/Messaging Mobility Ease of adds, moves, changes Remote Call-In Example: 1-800-USE-VNET Current Customer-Facing Features SIP Products and Apps

10. Current client features Features available on SIP Phone Caller ID Call Waiting Redial List Directory Missed Call List Received Call List Placed Call List Personal Directory Do Not Disturb Anonymous Call Blocking Speaker Phone Call Transfer Mute Headset Multiple Lines 3-way Conferencing Java API Support(Currently Pingtel only) SIP Products and Apps

11. Soft Client in 1Q03 Internal use since early 2002 SIP Products and Apps

12. Service Configuration Management SIP Products and Apps

13. Feature Selection SIP Products and Apps

14. Subscriber Account Management SIP Products and Apps

15. SIP Products and Apps

16. SIP Products and Apps

17. Future Plans* • Interoperability: Devices and Services • Network Edge IP Comm. Service Infrastructure • Collaboration • Transport Independence • Global Reach • Single Internet Standard Voice Codec (License-Free) Requires the cooperation of all vendors for gateways, phones, media servers * The opinions presented here may change and may not be those of my company SIP Products and Apps

18. 802.11 Any to any using the Internet Interoperability: The Choices Using SIP Snom AG PSTN Switch PSTN GWY WorldCom Deltathree Vonage Telia other… HotSIP IPTel Pingtel Vendor Service without public PSTN GWYs Service Providers 3GPP 3GPP2 Many other SIP phones… Also: w. 802.11g,b emerging SIP Products and Apps

19. Customer Premises Central Office CPE vs. Network Edge Services Move all IPComm infrastructure functions from the CPE into the network Access Link(s) Firewall/NAT with UPnP SIP Registrar/Proxy GWY to Local PSTN QoS Utility – replace with MCML PPP* SLA Monitor** Wireless Ethernet Security and AAA Header compression*** *RFC 2686: The Multi-Class Extension to Multi-Link PPP ** I-D by A. Clark: “RTCP Extensions for Voice over IP Metric Reporting ***RFC 2509: IP Header Compression over PPP  SIP Products and Apps

20. Bandwidth Savings from Compression(useful for SME using DSL access) Note: Calculated for two voice frames per UDP packet for G.729 * RFC 2508: Casner, S. and V. Jacobson, "Compressing IP/UDP/RTP Headers for Low-Speed Serial Links", 02/1999. SIP Products and Apps

21. Perspective on Collaboration SIP based conferencing adds new capabilities in an integrated environment: • Only IP network is required, but PSTN/ISDN ports are also supported • All media: Text chat, voice, video and data collaboration • Integration with applications and data collaboration • Support for all modes from scheduled to ad-hoc • Presence can complement scheduled conferences • Flexible: • Choice of user devices: PC/laptop, SIP phone, palm computers • Multiple access speeds can be supported • Secure collaboration features: • Authenticated users • Display of attending parties • Encrypted media (Legal intercept) Inter-enterprise conferencing requires firewall traversal, Initial services start with voice only, video next, Gradual introduction of new features. SIP Products and Apps

22. SIP Conference Services • Integration of conferencing with calendaring and scheduling • Presence based conferencing • Change conference model and media ad-hoc • Migrate from IM session to voice call • Voice call to audio conference • Voice conference to video conference • A/V conference to collaboration through document sharing • All this without hanging up from the original call/session and while moving around between different end devices! • Distant learning – virtual classrooms • Advanced web call centers – multimedia with live agent • SIP for the hearing disabled is a special conference application SIP Products and Apps

23. Applications Announcements Calling card Voice mail IVR …etc.,.. Components SIP servers PSTN gateways Media servers & files Application servers AAA servers Streamlining Voice Applications and Components Countless ISP voice services and features (more than the 5,000 Class 5 switch) and other services can be decomposed: Ref: A Multi-party Application Framework for SIP http://www.ietf.org/internet-drafts/draft-ietf-sipping-cc-framework-01.txt SIP Products and Apps

24. Web Server HTTP HTTP AAA Server Application Server SIP External AAA SIP RTP SIP PSTN Media Server RTP PSTN Gateway HTTP File Storage Voice Components (SIP servers not shown) SIP Products and Apps

25. Application: Conference Focus Factory UA Conference Initiator Conference Focus UA Mixing Cloud Moderator UA Participant UA SIPPING WG Conference Architecture SIP SIP SIP SIP SIP RTP RTP I-D: A. Johnston, “SIP Call Control – Conferencing for User Agents [Sipping] Focus URI, Focus Factory URI, Conference URI by Eric Burger, sipping@ietf.org on 11/16/2002 SIP Products and Apps

26. Recent Conferencing Internet Drafts Ref: http://search.ietf.org/ SIP Products and Apps

27. Leverage All Capabilities in Windows Messenger Commworks SIP Network Gateway • 1. POTS Connectivity • PC to phone • 2. IP Communications • Presence • Text messaging (IM) • Voice, telephony • Video • 3. Data Collaboration • Whiteboard • Application sharing • FTP Microsoft Messenger based on SIP Laptop and desktop become full communication enabled Next: Mobility with SIP for mobile devices! SIP Products and Apps

28. Compaq HP Casio GUI by SJLabs NEC Mexmal HP Toshiba Siemens Toshiba ASUS Toshiba Microsoft Portrait SIP for 2.5-3G & 802.11.x wireless is quite promising http://www.microsoft.com/mobile/pocketpc/learnmore/hardware/americas.asp * Dell Sony-Ericsson w. HotSIP GUI SIP Products and Apps

29. Wireless and Mobility Evolution to 4G • Initial mobile wireless data deployments will be 2.5/3G-based • These are rapidly augmented by IEEE 802.11 microcellular wireless solutions • The 3G technologies will ultimately replaced by an IEEE 802 mobile broadband wireless solution • Resulting in a tightly integrated IEEE 802/IETF mobile IP wireless data networking infrastructure. Ref: Paul Nikolich, Chairman, IEEE 802 LAN/MAN Std. Com., Boston NGN 2002. SIP Products and Apps

30. Objective: Adopt One Single Internet Codec (Internet standards are always better and license free) http://www.ietf.org/internet-drafts/draft-ietf-avt-ilbc-codec-00.txt http://www.ietf.org/internet-drafts/draft-duric-rtp-ilbc-01.txt SIP Products and Apps

31. Tested with both WorldCom and HotSIP SIP servers Internet Voice Path: Dallas - Stockholm Better than PSTN voice on the Internet Path traverses 3-4 public networks and 17 IP routers CD quality sound with HotSIP softphone and GIPS codec Consistent quality for over a year of observation Yokohama-Dallas is of similar quality as experienced at the 54 IETF meeting Conclusion: SIP services work well globally on the Internet ‘as is’. SIP Products and Apps

32. WorldCom Latency Statistics (ms) WorldCom Latency Statistics (ms) 2002 2002 2001 2001 Trans Atlantic Trans Atlantic 81.020 81.020 82.505 82.505 82.190 82.190 82.445 82.445 82.770 82.770 78.865 78.865 80.855 80.855 79.150 79.150 77.125 77.125 78.185 78.185 78.995 78.995 79.115 79.115 Europe Europe 18.828 18.828 21.505 21.505 19.715 19.715 19.628 19.628 20.002 20.002 19.046 19.046 18.718 18.718 23.278 23.278 22.240 22.240 21.644 21.644 21.051 21.051 22.642 22.642 North America North America 43.662 43.662 44.065 44.065 43.779 43.779 44.373 44.373 44.031 44.031 44.044 44.044 44.616 44.616 45.312 45.312 46.030 46.030 49.942 49.942 49.817 49.817 49.709 49.709 Intra-Japan Intra-Japan 17.803 17.803 18.856 18.856 18.886 18.886 18.066 18.066 18.617 18.617 18.784 18.784 17.753 17.753 17.739 17.739 16.692 16.692 16.675 16.675 17.304 17.304 20.888 20.888 Trans Pacific Trans Pacific 119.375 119.375 120.095 120.095 120.935 120.935 121.755 121.755 121.635 121.635 121.375 121.375 120.765 120.765 124.115 124.115 - - - - - - - - Global IP Latency and Packet Delivery Stats http://www.worldcom.com/global/about/network/latency/ SIP Products and Apps

33. Global IP Network Map http://www.worldcom.com/global/about/network/maps/ SIP Products and Apps

34. Conclusions* SIP based IP communications Interwork well with the PSTN/PBX/Centrex Have most PSTN/PBX/Centrex voice features Beyond voice services that cannot be provided using PSTN/PBX/Centrex Can (and will) replace the PSTN/PBX/Centrex PSTN/PBX/Centrex voice traffic migrates to mobile services and to IP Mobile services migrate to IP and SIP based IP communication End game is all communications move over the Internet * These are strictly personal opinions, though with some mindshare with colleagues SIP Products and Apps