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Evolutionary Convergence Of Voice Networks.

Market trends in IP telephony product shipments compared to traditional PBX, focusing on QoS, migration strategies, trunking benefits, and IP extension features. Includes data trends and standards overview.

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Evolutionary Convergence Of Voice Networks.

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  1. Evolutionary Convergence Of Voice Networks. Alex Gatiragas IP Telephony Product Manager

  2. Market Trends 3% 4% 13% 25% 33% % Compared to new ‘traditional PBX’ line shipments U.S. Enterprise Communications 000s of IP Lines Shipped 6000 5000 4000 3000 2000 1000 0 1999 2000 2001 2002 2003 2004 Data From The Phillips Group - InfoTech

  3. Market Trends • Why the slow take up? • Quality and reliability concerns 53% • Unproven technology 25% • PSTN works fine 22% • Too busy to switch 19% • No compelling economics 13% • * BCR Aug. 2000 - Forrester Research Quality of Service (QoS) is a key requirement for IP Telephony

  4. Quality of Service IP Telephony call with no QoS example • Definition of QoS • There is no unique formal definition • RFC 2386:„A set of service requirements to be met by the network while transporting a flow“ • IEEE:The set of those quantitative and qualitative characteristics of a distributed multimedia system, which are necessary in order to achieve the required functionality of an application. NEC’s Definition: - Accurately predicting the behavior of a data network.

  5. Quality of Service CODEC Compression Mean Opinion Score Delay G.711 64 Kb 4.3 0.25 ms G.728 16 Kb 4.0 1-3 ms G.729 8 Kb 4.0 25 ms G.723 6.3/5.3 Kb 3.6 67 ms

  6. Quality of Service Jitter Buffer Jitter Buffersensure linear conversion of voice packets to speech. Packet Prioritisation • Reservation (Integrated Services) • RSVP (ReSerVation Protocol) • SBM (Subnet Bandwidth Management) • Prioritisation (differentiated services) • DiffServ (Differentiated Services) • MPLS (Multi Protocol Label Switching) Input Interface Memory Data Packet Voice Packet Output Interface Input Queue Output Queue

  7. Quality of Service - NEC Labs

  8. PBX Migration NEC’s Focus is on Evolutionary Migration LEAVE NOBODY BEHIND!

  9. IP Trunking PSTN/Private NW • Reduction of carrier charges • - Inter office calls • - Off net calls • - 1800 / 13 calls • Line rental savings. • Enhanced Services • - Improvement in inter-officecommunication. • - Web enabled call centers. • - Centralised V/mail. • - Centralised operator. SS7 SS7 SS7 QoS IP Network In the skinIP Trunk

  10. IP Trunk Cards • Capacity expansion via plug in modules. • Multi-protocol support via Firmware upgrade (IMX / IVS). • 10 / 100 Base-T Ethernet support. • G.711, G.723.1, G.729A Compression. • G.168 Echo Cancellation. • IP Precedence, Diffserve for QoS. • Dynamic Jitter Buffer. • G3 FAX T.30 Base. IMX IVS Xen

  11. IP Trunk Interoperability IMX PBX Supported Protocols • FCCS over IP (IMX) • CCIS over IP (IMX & IVS) • H.323v2 (All) • Qsig over IP (under development) Cisco Call Manager QoS IP Network Microsoft Netmeeting As Demonstrated on NEC’s Stand IP Xen KTS IVS PBX

  12. IP Trunk Implementations NEC ATM NETWORK • Other Implementations:- • National Jets. • National Foods. • Victoria Police. • QLD Uni of Tech. • Yeronga TAFE. • Toowoomba Hospital. • North Limited • …..Many More NEC’s Toll Bypass

  13. IP Extensions • Cost Savings • - Cabling. • - Moves / Changes. • - Remote stations. • PBX expansion. • Enhanced Services • -Mobility • - Remote Call Center Agents. IP-ELC QoS LAN / WAN Network DtermIP DtermIP DtermIP DtermIP As Demonstrated on NEC’s Stand

  14. IP Extensions • High Capacity Cards. • Full user feature transparency. • 10 / 100 Base-T Ethernet support. • Compression via add-on modules. • 2 port switch built into IP Adaptor. • G.168 Echo Cancel. • Dynamic Jitter Buffer. • IP Precedence, Diffserve for QoS.

  15. IP Extension – Field Trial Call Center Agents Head Office DSL Service Provider Regional Office Call Center Agents Call Center Server IP ELC DSL Modem DSL Switched LAN Switched LAN DSL Modem

  16. PBX – Extension Feature Transparency Calls between IP extensions have signaling through PBX, BUT voice stream is maintained as peer to peer. PH DtermIP’s Router WAN Switched LAN Switched LAN Router • Voice Mail • CTI • Billing • Etc.

  17. Standards Standards Supported by Vendors H.248 / Megaco H.323 v3 H.323 v1 MGCP per ISC spec SIP None / No Answer Other SIP per RFC 2543 MGCP per RFC 2705 H.323 v2 0 10 20 30 40 50 60 70 %

  18. Standards H.323 from vendor A does not necessarily equal H.323 from Vendor B The Key is Interoperability Testing • NEC – Cisco H.323 Interoperability. • H.323 Normal / Fast Start • H.323 interoperability between IP TRK and Cisco Call Manager • Cisco 2620 GK IOS12.1(2)T • Cisco 3620 GW IOS12.1(3a)T1 • Cisco 1750 GW IOS12.1(2)T • NEC – Cisco Development • H.450.x Supplemental Services (Name Display, Call Back, etc.) • Cisco Discovery Protocol (CDP) • Network Management • Unified Directory

  19. Powering IP Phones To UPS Outlet OR PBX D.C Feed Power Patch Panel 10/100M Layer 2 Switch As Demonstrated on NEC’s Stand NEC NEC 802.3af PD signature detection DtermIP Ethernet Connectivity to users PC (via integrated 10/100 Mb Switch) RJ45 Wall Outlet

  20. Powering IP Phones Warning ! Take care when moving patch leads from Powered to Non-Powered devices. 10/100M Layer 2 Switch …OR Directly from Layer 2 switch with power insertion capability. (e.g. Cisco 3524 X4-PN-PWR) 802.3af PD signature detection DtermIP Ethernet Connectivity to users PC (via integrated 10/100 Mb Switch) RJ45 Wall Outlet

  21. NEC Media Devices Analog Media Converter • Provides Analog to IP conversion for 2 devices • Provides DC power, Ring voltage, M/W lamp functionality…. E1 Media Gateway • Provides E1 ISDN to IP conversion. Dterm Media Converter LAN • Provides Dterm to IP conversion for 8 handsets. • Provides DC power for handsets ISDN

  22. IP Soft phone ePhone (Local Development) • Full Dterm features. • Win 9x + Win 2000 compatibility • Configurable look and feel (skins, auto-hide..). • Phone-book facility. • Call history logging. • Extensive development plan. As Demonstrated on NEC’s Stand

  23. Wireless IP Phones As Demonstrated on NEC’s Stand NEC IP Phone NEC PBX 802.11 AP NEC H.323 Gatekeeper Wireless IP Phones

  24. NEC Advanced IP Terminal • 1/4 VGA(5.7”) colour or mono • HTML / Java support • Proprietary & H.323 support. • 2 port switch. • Switch Powered • Expansion Module (eg. Bluetooth) • USB port (keyboard / mouse)

  25. PBX Evolution WAN IP Enabled Dterms Media Gateway Controller PSTN & Private Networks PSTN & Private Networks IP CS Media Gateway Media Converter H.323 GATEKEEPER IP Tel (H.323) IP NW Development Evolution NGT IP PAD IP Enabled Dterm Media Gateway Controller IP Tel (H.323) H.323 GATEKEEPER Media Converter IP NW IP CS

  26. PBX Evolution • It Is Important To Be There…. • But it is also important how you get there: • Utilising integrated IP telephony products • Embracing migration and investment protection, not replacement and obsolescence. And… “Without Compromising the User Experience”

  27. Thank you Questions?

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