IPPhone Solutions.pdf

T HE W ORLD L EADER I N DSP AND A NALOG

IP Phone

Solution

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

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

TI’s IP Phone solution consists of:

• IP Phone chipset

• IP Phone embedded software

• IP Phone APIs

• IP Phone software development

tools

• IP Phone reference design

TI’s IP phone chipset consists of

two devices:

• An IP phone processor which

integrates TI’s 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 TI’s successful

Ethernet-switching products has

been added to this architecture.

Bundled with this device is Telogy

Network’s Golden Gateway ® VoIP

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.

IP Phones Expand Legacy PBX-Based Phone Systems

By re-using existing field-proven

technologies, TI considerably reduces

our customers’ development risk.

The high-performance, low-power

’C54x 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.

TI’s IP Phone solution includes

industry 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 customer’s 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.

• 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

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

Software Development Kit

Application Programming Interfaces

Reference Design

TI IP Phone Reference Design Block Diagram

RISC

SDRAM

x32

Keypad I/O

For more information, please

contact the nearest TI or

Telogy sales offices or visit

our web sites:

RISC

Flash

x32

DSP

DB9

RTOS Debugger

IP Phone

Processor

Handset

Speaker

Microphone

IP Phone

Codec

DSP

SRAM

x16

www.ti.com/sc/voip

LCD I/O

10/100 PHY

LAN

10/100 PHY

www.telogy.com

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

IP Phone

Processor

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