UBIFone&

The Technology Ahead

25th June 2006

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Agenda

- The UBIFone Platform and its extendability

- What is Compression Technology or CODEC?

- Why the current technology is simply not good enough?

- Birth of GIPS Solutions

- GIPS NetEQTM – What it can do for us?

- GIPS CODECs

- GIPS and the Human Experience, how it all fares?

- Enhancement Components

- GIPS and UBIFone :: In a NutShell

IP NetworkIP Network

MGW

ATA/IAD

PSTN

IP Phone

IP PBX

WLAN

Mobile

PDA

PC

Video

SoftphoneCollaboration Application

Server

ConferencingVoiceMail

The UBIFone IP Platform and its Extendability

UBIFoneUBIFone

What is Compression Technology or CODEC?

- CODEC is an abbreviation for Coder/Decoder

-Highly popular with all storage related technologies

- MP3

-DivX

-AVI etc.

- For VoIP the CODECs are G.711, G.723, G.729, GSM etc.

- Core engine behind your SoftFones, IP Phones, Adaptors & Devices

- Helps convert each voice signal to digital packets for transportation, and then reverses process so that it is humanly audible.

VoIP Technology Challenges

LAN/Campus• Ethernet

– Low delay and jitter – Low packet loss levels– Short periods of network

congestion– Larger campus networks can

experience significant jitter and packet loss

• WLAN (and Hotspots)– Long delay and significant jitter

(up to 500 ms)– Packet loss up to 40% during

congestion– Poor coverage results in poor

link quality

Remote Office• Frame Relay/ATM

– Subscribed rate that guarantees certain behavior

– Unpredicted behavior with extensive jitter and packet loss when rate is exceeded

– Expensive and non-flexible solution

• IP VPN– ”Busy hours” characterized by

delay, jitter and packet loss– Probed traffic shows packet

loss levels up to 30%– Inexpensive, flexible and

scalable

Why The Current Technology Is Not Good Enough?

VoIP Technology Challenges

•Traditional packet loss concealment solutions introduce annoying artifacts

•Traditional Jitter buffer design creates trade-off between long delay and voice quality

•Standard codecs not designed for VoIP networks

•Soft clients suffer from Windows related artifacts

•Traditional echo cancellation not efficient enough

VQE

Birth of GIPS solutions

•World renowned engineering team patented solution

iSAC CODEC• For PC to PC calls• 10 – 32 Kbp/s• High compression ratio, possible to deliver on all bands

iLBC CODEC• For PC to Phone calls• 13.3 – 15.2 Kbp/s• Open Source license, always improvising

iPCM-WB Codec• For PC to PC calls• 80 Kbp/s• Auto implements with high bandwidth availability

GIPS NetEQTM

Product Description Advanced jitter buffer combined with superior error concealment

Benefits Quick and high resolution adaptive jitter buffer Highest rate of dynamic buffer size reduction resulting in shorter latency and higher voice quality

Deployed at receiving end only Not dependent on system-wide deployment NetEQ equipped end point receives quality benefits Flag ship product adopted by all GIPS customers

Generic – works with any codec Optimized support for GIPS codecs, G.729, G.729AB, G.723.1, G.711, GSM, AMR, G.722.x and many more Interoperable with all codecs

GIPS Codecs

Narrowband codecs

–GIPS Enhanced G.711TM

–iLBCTM

Wideband codecs

–GIPS iPCM-wbTM

–GIPS iSACTM

MOS: Subjective Listening Testing

• Conducted by world’s leading testing lab, Lockheed Martin Global Telecommunications

– Previously known as Voice Codec Evaluation Department of COMSAT Labs

• 36 naive listeners subjected to 8-second sentence pairs

– Read by both male and female speakers

– Presented at random

• Each sentence graded by listeners– 5 = excellent– 1 = bad

• Reported score represents the mean of all votes

*Best quality means clean, or perfect conditions

Best possible PSTN Quality*

Best possible Cell Phone Quality*

Hang-up, intolerable speech degradation

MOS: GIPS Codecs

Enhancement Components

•Echo Cancellation & Suppression–Full duplex AEC with support for wideband speech–Lower complexity AES for PDAs–NEC included in VQE for ATA

•Noise Cancellation & Suppression–Automatically suppresses or eliminates background noise from various sources, without suppressing voice volume or distorting voice quality

•Voice Activity Detection & Comfort Noise Generation –VAD classifies speech frames as active or inactive while the user configurable CNG generates a comfort noise signal

•Automatic Gain Control –Automatically adjusts speech volume to a comfortable level–Available in analog and digital modes to improve the SNR of the signal and prevent audio clipping

GIPS and UBIFone :: In a NutShell

•Addresses all voice quality issues–Handles echo, background noise, and speech detection in one module, eliminating the need to buy multiple individual components

•Optimized for better performance–All of the components designed together and highly optimized, resulting in a superior call quality and low complexity

•Available on any platform–A field proven, real time solution for chip, equipment, and application providers, as well as low complexity devices such as PDAs

•Immediate Results means more satisfied UBI Calls–Each new SoftFone downloaded, each new UBIFone call made, is more chances of proven quality, more chances of satisfied customers, more sales for your business!

Thank You

Special thanks to:- Global IP Sound Inc.