VoIP Peering and Any to Any InterconnectionG. D. Redmill,

Director, EMEA Market and Business Development

Presented at VON EuropeMay 15, 2006

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The New Company Name

Cantata Technologycan•ta•ta (kën-të'të) n. Mus. A musical composition in which talents converge to create something truly unique. A work that is more innovative, integrated and engaging than the sum of its parts

Attributes of Cantata:

• International• Convergence• Ensemble• Integrated• Classic• Enabling• Innovating • Multimedia• Enduring

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SnowShore IPMedia Server • IP Multimedia Subsystem

(IMS) media processing software resource

Cantata MSP 1010• Cost-effective, multi-functional

IP/TDM platform for voice, signaling

Cantata IMG 1010• An intelligent, integrated media

and signaling gateway that enables delivery of SIP services into legacy SS7/PRI networks

Cantata’s Product Portfolio

Enabling Business and Network Transition to IP

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Network Evolution

Moving from a pure TDM world to pure IP Migration in process, ongoing

– Hybrid environments emerging as part of transition• TDM >>>> IP

• IP >>>>>> TDM

• IP >>>>>> IP

– Evolving and expanding set of interconnection requirements

Operators must always consider interconnection relationships

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What is Interconnection?

Networks cannot exist as islands Operators have to exchange traffic

– Originating– Transit– Terminating

Typically, there are strict protocols regarding interconnection– Equipment approval (is it known?)– Conformity (which SS7 variant do I need?)– CAT (live acceptance testing)

Constantly evolving– Network evolution demands new approaches and creates

new challenges

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Operators are Islands

Operator A

TDM

Operator A

TDM

Operator EIP

Operator EIP

Operator DIP

Operator DIP

Operator C

TDM

Operator C

TDM

SS7 + TDM IMT

SIP + RTP

SS7 + TDM IMT

SIP + RTP

Operator B

TDM

Operator B

TDM

ISDN

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New Challenges

IP migration demands IP / IP interconnection– VoIP Peering

Presents challenges for the boundaries– IP isn’t just about high-speed data access

Also needs real-time IP communications support– Voice traffic– SIP traffic (for voice and other applications – e.g. presence)– QoS and BW management (CoS)– Security

Need to consider IP/IP internetworking in the context of real-time, symmetrical communications services as well as asymmetrical

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VoIP Peering Issues

Address conversion (ENUM)– E.164 PSTN number mapping to URIs and IP addresses

Service Discovery and Location– What network is the user in (do lookup)? – Provide means to locate service address– Once a subscriber is located, what server element (e.g. proxy server)

to contact to start session?

Signaling Mediation– May be SIP, H.323 or variants

NAT Traversal– Network Address Translation can affect signaling and media

Security– Carriers may want to hide network topology– Methods for privacy and authentication

Media translation (transcoding)– Convert among G.7xx,iLBC,AMR, EVRC– Also translation for fax and tones

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Media Translation (transcoding)

Bonjour, I talk G.711 and G.729…

Hola, I only talk G.711…

Hi, I talk G.723 and G.729…

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Customer Case Study

Problem Needed IP to IP transcoding to

connect disparate networks Solution

IMG 1010s deployed with H.323 in major International PoPs

Why the IMG and Cantata? High density transcoding Broad signaling capabilities Proactive support provided

during the deployment process

LatinNode - One of the world's largest players in the international VoIP industry, transporting 3% of the global VoIP Long Distance (LD) traffic.

RTP

IMG 1010

IP Network 1 – G.723

IP Network 2 - G.729

SIP/ H.323

SIP/ H.323NexTone SBC

IP Network 1G.723

IP Network 2G.729

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TDM Switches and VoIP Fabric

Media Gateways can IP enable a legacy TDM platform, no fork lift upgrades Why VoIP?

– Low cost shared bandwidth over an IP pipe– Establish carrier interconnects in days not months

Mixed mode networks such as this leverage existing technology while giving access to new technology

Reverse situation also true – TDM enabling IP applications or interconnect

TDM Based Prepaid Platform

ISDN/ CAS

TDM Based Prepaid Platform

Toll FreeService Provider

(Inbound)

Long Distance Carriers

(Outbound)

SS7/C7IMG 1010

IP NetworkRTP

SIP/ H.323

IP Network

LD Carriers(Outbound)

Toll Free Service Provider

(Inbound)

IMG 1010

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Summary

Networks are constantly evolving and providing new challenges

IP / IP interconnection increasingly likely VoIP Peering with ENUM will revolutionize voice traffic Leverage existing resources with bridge devices like media

gateways – Cantata IMG integrated signaling and media gateway

– Solves IP / IP & TDM / IP interconnection problems

– NGN and Legacy signaling

• SS7 / ISDN / SIP / H.323

– TDM and multiple IP Codecs