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N e v e r s t o p t h i n k i n g .

2nd Workshop on Wideband Speech Quality in Terminals and Networks: Assessment and Prediction 22nd and 23rd June 2005 – Mainz, Germany. :. IP-Phone solution. A Wideband capable VoIP Chipset called INCA-IP “Aspects of Wideband Speech Quality as seen by the Customer System Engineering”.

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  1. 2nd Workshop on Wideband Speech Quality in Terminals and Networks:Assessment and Prediction 22nd and 23rd June 2005 – Mainz, Germany : IP-Phone solution A Wideband capable VoIP Chipset called INCA-IP “Aspects of Wideband Speech Quality as seen by the Customer System Engineering” Frank Meier, Infineon Technologies frank.meier@infineon.com N e v e r s t o p t h i n k i n g .

  2. INCA-IP: Converging from a Single Chip to a Complete System

  3. INCA-IP: Hardware Overview

  4. Analog Front End fully integrated - no external amplifier necessary • Design proven in INCA-P • 3 Different Inputs Handset Microphone Headset Microphone Handsfree Microphone • 3 Different Outputs Handset Speaker Headset Speaker Handsfree Speaker • AFE is Wideband capable INCA-IP: Analog Front End

  5. INCA-IP: Digital Signal Processor • Full Duplex Speakerphone with Noise suppression • Handset echo control(Normal handset only achieves 45 dB, ITU spec. 60dB) • Enhanced full duplex handsfree speech for G.722 • Automatic Gain Control • Caller-ID Transmitter • Speech Recognition (DTW) • Tone Generation for Ringing and DTMF • 3-Party conferencing with mixed coders • Voice Coding/Compression • G.711 • G.723.1 • G.729 A/B • G.722 • G.726

  6. INCA-IP: CPU subsystem • SDRAM Controller • Cache Controller • 4k I-Cache and 4k D-Cache (2 way set associative) • Memory Management Unit prepared for any OS • Clock generation unit • Advanced power management • Interrupt arbitration in parallel to CPU operation • Optimized bus architecture for maximum bandwidth • Clock speed up to 150 MHz • Subsystem is reused from other projects • MIPS32 4KcTM RISC CPU

  7. INCA-IP: Compact and Standard Version • Same hardware concept for Compact, Entry, Standard and Office Phone • Same package and pin-out • Software synergy for both chips

  8. INCA-IP: Tools • INCA-IP Tool Package • Demonstration Board • Software Package • Documentation • Accessories • Demonstration Setup • Voice over IP connection • Different Voice Codecs • Full Duplex Speakerphone • Complete IFX VoIP Phone Software available

  9. INCA-IP: Complete SW Solution (1) • Fully integrated IP Phone software solution • Based on open source LINUX OS • Telco grade, toll quality performance • Extensive QoS support • High-level, user friendly APIs • Standard Networking Support (IPv4, TCP, UDP, ICMP, ARP) • Web-based management, SNMP • Remote Upgrade Capabilities • SIP (RFC 3261, RFC 3265, RFC 3515, RFC 3264, RFC 2782 and RFC 3428) • SDP(RFC 2327) • RTP/RTCP (RFC 3550) • Secure RTP (RFC 3711) • Adaptive Jitter buffer • DHCP option for SIP (RFC 3361) • DNS support for SIP

  10. INCA-IP: Complete SW Solution (2) • Three-way conferencing • Voice activated dialling • Volume control • Codec selection • Loudhearing/handsfree/headset selection • Address book • Instant messaging • Call on hold • Call waiting • Call forward • Call transfer • Call blocking (do-not-disturb)

  11. SW Stack

  12. SW Interop Lab • Fully automated • automatic dial • ring detection • bidirectional voice detection • RTP stream capturing • etc. • Automatic report generation • More than 35 competitor phones included

  13. Overall Problems with WB Typical problems that occured during development of the INCA-IP system and that have been recorded by the Infineon customer system engineering: • End user acceptance is still very low („sounds strange“) • they are used to phones that sound like a phone • The vendor´s acceptance is medium but priority to switch over to WB is low („We have planned it for one of our next phones…“) • Codec Situation is unclear (G.722, G.722.1, G.722.2, … ?) • Knowledge about codecs and SW at all of system vendors decreases  new tasks for us

  14. Possible Blocking points for the acceptance of WB • Still unsolved problems • The „perfect“ Codec is needed (One Codec for Low Bitrate up to High Quality) • Quality of the lower frequencies (Speaker, Mic, Housing) • Guaranteed Bandwidth / QoS in the WAN/Internet • Home User: Absolute Low Cost, Telephone „For Free“ • Professional User: High Quality, Reliability, Availability • Both: Additional costs have to be low! • Missing Infrastructure, Today WB is usually an isolated Solution, e.g. inside a Company Network • Telecom Provider need should push the Usage of WB • Interop not tested or not even wanted by all vendors • „POTS phones are always compatible“

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