october 4-7, 2004 los angeles, ca from pbx to ‘office in a box’ the evolution of enterprise...

October 4-7, 2004 • Los Angeles, CA • www.itexpo.com

From PBX to ‘Office in a Box’ The Evolution of Enterprise

Telecommunications

Jonathan PeaceCTO, Mindspeed TechnologiesMulti-Service Access Division


Topics

• Carrier VOIP – lessons learned

• VOIP in the Enterprise – trends and Implications

• Beyond VOIP – maintaining the value proposition

• Challenges and solutions


Lessons Learned from Service Provider VOIP Deployments

• Voice has become just another data type

• Quality and security are #1 issues– Delay – Echo cancellation– Packet loss– Resistance to denial-of-service exploits

Enterprise systems will have to adopt carrier architectures to reach carrier standards


Trends in Enterprise Voice

• Voice will become just another data type in the enterprise too

• Proprietary signaling will give way to standards (e.g. SIP)

• Voice over WiFi will become integrated into business cell phones

Future value proposition MUST go beyond voice…


Emergence of “Office in a Box”

• Adds data-centric services to existing voice portfolio - maintains end-user value proposition

BUT

• Must continue to meet stringent voice quality standards

• Must scale from 5-500 users


From iPBX to OIAB

SiPBXPlatform

VOIP GW

CallCenter

IAD

IVR

IP PBX

ConfBridge

Officein-a-Box

Platform

WANRouter

802.11 AccessPoint

FirewallRouter

VPNBox

VOIP GW

CallCenter

IP PBX

IVRConf

Bridge

IAD/ONT

Fu

nct

ion

alit

y

Value


Office in a Box : Definition• Easy-to-configure appliance that meets

complete telecommunications needs of remote office/branch office users:– All IP-PBX functions plus VPN, Firewall,

DHCP, BGP, RIP, PIM-SM, and IGMP/MLD

– EXPLOSION in middleware requirements!

Challenge: Provide application breadth AND maintain QoS and performance


What about Open Source?• Provides unmatched breadth of high-

quality middleware• NB Open Source ! = Linux!

– Think Apache, Perl, PHP, GCC, MySQL, FreeBSD, Asterisk, Smoothwall, Postfix, Zebra, CUPS, etc.

How best can this be leveraged yet still provide a low-latency, high performance platform?


Signal Signal ProcessingProcessing

RICHAPPLICATIONS

RELIABILITY& SECURITY

CARRIER QUALITYVOICE

Elements of a Mixed Media System

ApplicationsApplicationsProcessingProcessing

Network Network ProcessingProcessing


Typical IP PBX Architecture Today…

FPGA Glue Logic

rMII

Host Applicatio

n, Signaling

and Packet Processor

DSP farm may also require external

static RAMs

Signaling and Packet Processing Controller

e.g. PowerQuicc,MIPS,ARM

System Flash ROM

System SDRAM

Telephony

Interfaces

TSI

DSP

DSP

DSP 10/10

0

PHY Multiple DSPs need external Time Slot

Interchange

Enterprise density requires multiple

DSPs

Ethernet

TDM


Typical Carrier Architecture today

Control and Signaling

Host Operating System

Media Stream Processing

InternalMemory

N x DSP

DSP Resource Manager

Voice Channels

Signaling Stacks

Control Applications

TDM

Ethernet

Media Stream Processing sub-system offloads host CPU

Ethernet


Ethernet

TDM

10/1

00

PH

YCSP

Control and Signaling Processor

MSPMedia Stream

Processor

Virtual EthernetDriver

(SHM interface)

Tele

ph

on

y I

nte

rfaces

WAN T1/DSLPON/ENET

Single UnifiedMemory

DDRSDRAMN

on

rea

l-ti

me

Re

al-

tim

eA new SoC paradigm


The Control and Signaling Processor

• Controls MSP over a Virtual

Ethernet Interface– Highly scalable, NO NEW

DRIVERS!

• Does not have to touch

Fast-Path traffic – Can run non-realtime OS such

as FreeBSD

– Leverages wealth of Open

Source Middleware

Ethernet

TDM

10/1

00PH

Y

CSPControl and Signaling Processor

MSPMedia Stream

Processor


(SHM interface)

Tele

phon

y In

terf

aces

WAN T1/DSLPON/ENET


DDRSDRAM

No

n r

eal

-tim

eR

eal-

tim

e

Ethernet

TDM

10/1

00PH

Y


MSPMedia Stream

Processor


(SHM interface)

Tele

phon

y In

terf

aces

WAN T1/DSLPON/ENET

WAN T1/DSLPON/ENET


DDRSDRAM

No

n r

eal

-tim

eR

eal-

tim

e


The Media Stream Processor• Set and forget – no CSP MIPS

used during call

• Simple Ethernet Control Model

– Easy expansion with off-the shelf Ethernet switches

• Pre-tested microcode performs all latency-critical network and signal processing

– Layer 2 network processing (PPP, Bridging, AAL5 etc)

– VOIP processing (voice coding, echo cancellation, jitter buffer, etc.)

Ethernet

TDM

10/1

00PH

Y


MSPMedia Stream

Processor


(SHM interface)

Tele

phon

y In

terf

aces

WAN T1/DSLPON/ENET


DDRSDRAM

No

n r

eal

-tim

eR

eal-

tim

e

Ethernet

TDM

10/1

00PH

Y


MSPMedia Stream

Processor


(SHM interface)

Tele

phon

y In

terf

aces

WAN T1/DSLPON/ENET

WAN T1/DSLPON/ENET


DDRSDRAM

No

n r

eal

-tim

eR

eal-

tim

e


Software Partitioning

MSP Supplied Software

PC

I D

river

Virtual Ethernet driver (control, data)

Host Kernel (Linux or VxWorks) including packet filtering, crypto API

T.38

FOIP

V.27,

V.29,

V.17

POTSSignaling

TDMSignalingNetworking and Routing Stacks

(IP,TCP,UDP, PPP, HTTP,ICMP,IPSec etc)

Shared Memory Interface driver

User Applications

Host OS BSP

RTP/RTCP or CPS

Enet Driver WAN

Eth, PPP Framing, IP, UDP Framing,

ATMDriver(WAN Utopia)

Packet Signaling

(SIP, H.323,Etc.)

Du

al P

ort

Seri

al D

river

US

B D

river

Hard

ware

Cry

pto

Mod

ule

s

HDLC Driver (WAN HSSI)TDM Driver

CSP Supplied SoftwareCSP Customer Software

Voice Packet classifier & switching/bridging

MPoA

G.168 Echo Cancel

G.711,729a/b/eG.726,723a

MPoFR

AAL5 FRF.12

DataSignaling(Q.2931,Q.933…)

SP

I D

river

Enet Driver

LAN

Caller

ID G

en

& D

et

DTM

F

Gen

& D

et


Wireless802.11b/a/g

FE Switch rMII or s3MII

or MII

LAN

WAN10/100

EthernetHDLCFrame

Relay over T1/E1

ADSL, G.SHDSL,

VDSL

SLIC/SLACFXS

T1/E1 Framer or FXO

LegacyVoice

TDMSPI

H-100

Features• Dual 375MHz ARM9 processors with MMU• 64-bit DSP/DSP Farm• IPSec compatible encryption co-processor supports 56-bit DES, 168-bit 3DES, 128-bit AES and other cryptographic algorithms as well as SHA-1, MMH, and MD5 authentication algorithms for VPNs.• Random number generator and IKE acceleration• 2 SDRAM controllers capable of addressing up to 512 Mbytes of memory• Native NAND flash interface• Two 10/100 Ethernet interfaces• 33MHz PCI 2.1 master/slave interface with arbiter • Multi-chain SPI• 4 highly programmable TDM interfaces• 2Mbps synchronous serial interface (HSSI)• USB 1.1 host port• 25/50MHz 8/16-bit Utopia interface• 32-bit expansion bus• 2 UARTs• I2C interface

PBX

Comcerto 800 - VOIP/SMB VPN Router

10/100PHY

10/100PHY

375MHzControl &Routing

Processor

Multi-Layer X-connect

10/100MAC

(WAN)

10/100MAC(LAN)

HSSI(WAN)

375MHzPacket

Processor

VoiceBandSignal

Processor

HardwareEncryption Processor

UTOPIAMulti-

ChannelTDM/SPI

10/100PHY

10/100PHY

EmbeddedSRAM

Exte

rnal B

us In

terf

ace

USB1.1

(Host)

X.21/V.35X.21/V.35

xDSLmodemxDSL

modem

Printer/Security

Key

Up to 512MBSDRAM

UART

V.24V.24

NORFlash(up to 16MB)

NANDFlash(up to

256MB)

PCI/Host Bus

TelephonyInterfacesTelephonyInterfaces

Comcerto 800series

Local BusLocal Bus


The Result…• Media stream processing technology unlocks the

value of Open Source– 5-10 times performance increase– Silicon integration creates lowest possible

system cost– Guaranteed carrier-class quality– Scalable – just add extra MSPs on an external Ethernet

switch– Fast code bring up – NO NEW drivers– Removes Big-Endian/Little Endian issues– Can be used with or without external host


Summary• New applications demand uncompromising voice

quality, but with an ever increasing breadth of middleware

• Equipment designers are under pressure to deliver rich feature set solutions with robust , high-quality voice

• New SoC and software paradigms are the answer to bringing these cost-effective new designs to market in the shortest possible time

october 4-7, 2004 los angeles, ca from pbx to ‘office in a box’ the evolution of enterprise...

Documents

los angeles

voice slide

enterprise voice voice

performance slide

sip voice

enterprise trends

carrier standards

topics carrier voip