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T H E W O R L D L E A D E R I N D S P A N D A N A L

Texas Instruments, with its Telogy

Networks subsidiary, has developed

a complete solution for Internet

Protocol (IP) phone manufacturers

consisting of processor and codec

devices bundled with a comprehen-

sive embedded software solution

and an IP Phone reference design.

TI offers developers a low risk

solution enabling very rapid time to

market. This is achieved by provid-ing a complete software solution

with industry standard Application

Programming Interfaces (APIs), by

giving early access to application de-

velopment tools and using proven, ro-

bust software and silicon technology.

Description

TIs IP Phone solution consists of:

IP Phone chipset

IP Phone embedded software

IP Phone APIs

IP Phone software development

tools

IP Phone reference design

TIs IP phone chipset consists of

two devices:

An IP phone processor which

integrates TIs industry-leading,

low-power TMS320C54x DSP

with a RISC MCU and a dual-port

10/100-Mbps switched Ethernet

interface

Single- or dual-channel IP phone

Codec devices with integrated

amplification.

This solution is the first truly

complete IP phone solution. It tar-

gets the Enterprise LAN IP Phone

space, enabling the augmentation

and replacement of traditional tele-

phone systems with network-based

communications systems running

over local and wide-area IP net-works. The high-performance DSP

enables high-fidelity telephony over

IP networks.

Low Risk Solution

TI has shipped millions of devices

that integrate the C54x DSP with a

RISC CPU to the leading manufac-

turers of wireless digital cellular

telephone handsets.

On-chip Ethernet-switching tech-

nology taken from TIs successful

Ethernet-switching products has

been added to this architecture.

Bundled with this device is Telogy

Networks Golden GatewayVoIP

software which has the largest

installed base of its kind and is thor-

oughly field proven. IP Phone-spe-

cific software has been added to the

Golden Gateway base product,

including half- and full-duplex

acoustic echo cancellation for speak-

er phone applications in addition to

the SIP and MGCP VoIP protocols

and wide-band vocoders.

Key Benefits

Complete solution enables shortest product

development time Integrated chipset allows IP phones to be

cost competitive with traditional PBX phones

Proven hardware and software lower risk

Low-power DSP-based processor reduces

system power dissipation

Programmable DSP-based processor allows

adoption of changing standards

IP PhoneSolution

IP Phones Expand Legacy PBX-Based Phone Systems

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By re-using existing field-proven

technologies, TI considerably reduces

our customers development risk.

The high-performance, low-powerC54x DSP CPU used in this solution

enables the adoption of future wide-

band voice compression standards.

These standards allow IP Phone sys-

tems to exceed the 4-kHz limit of the

public switched telephone network

(PSTN) and approach the audio

quality of FM radio or even CDs.

The flexible and programmable

architecture of this solution will

allow rapid adoption of changing IP

telephony standards.

TIs IP Phone solution includesindustry standard Application Pro-

gramming Interfaces (APIs) to en-

able customers to quickly develop IP

telephone application software to dif-

ferentiate their IP Phone products

A prototype development board

allows customers to begin develop-

ing their IP Phone application soft-

ware today. A customers application

software can quickly and easily be

ported from the development plat-

form to the final hardware. This is

because the same APIs are used for

both the prototype board and the IP

Phone chipset

Only TI and Telogy Networks have

the extensive worldwide support in-

frastructure required to enable IP

Phone manufacturers to get superior

differentiated products to market

faster.

IP Phone Solution Features

Silicon

IP Phone processor

C54x DSP core with on chip

RAM/ROM

ARM7 RISC MCU

Integrated phone peripherals

Dual-port Ethernet 10/100-

Mbps switch

IP Phone Codec

Dual- or single-channel wide-

band codecs integrated with

on-chip amplification

Software

Golden Gateway embedded IP

Phone software for DSP and MCU

IP Phone DSP Software

Multi-port conferencing module

Low latency system implementa-

tion

Voice Coders (G.711, G.726,

G.729A, B&E, G.723.1A, G.728,

G.722, and other wide-band)

Acoustic Echo Cancellation full- or half-duplex

Signaling and tone generation

adaptive jitter buffer

Gain control

Smart power management

IP Phone MCU Software

Complete VoIP signaling and DSP

management

Network interface protocols

Network management subsystem

System services software

User interface software

TCP/IP, RTP, UDP

VoIP protocols MGCP, SIP,

H.323

IP Phone APIs

Industry standard real-time oper-

ating system

Software Development Kit

Application Programming Interfaces

Reference Design

IP PhoneProcessor

RJ11

Keypad I/O

HandsetSpeakerMicrophoneLCD I/O

RJ45 LAN

PC

RTOS Debugger

RJ45

RISCSDRAMx32RISCFlashx32DSPSRAMx16

IP PhoneCodec

10/100 PHY

10/100 PHY

IP PhoneProcessorDSP DB9

Golden Gateway and Telogy Networks are registered trademarks of Telogy Networks.

TI IP Phone Reference Design Block Diagram

For more information, pleasecontact the nearest TI orTelogy sales offices or visitour web sites:

www.ti.com/sc/voip

www.telogy.com