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Case Study

Tele2 is one of the top Russian cellular operators. It operates six Tele2 GSMnetworks in different regions throughout the country, in Irkutsk, Rostov-on-Don,St. Petersburg, Kemerovo, Omsk, and Izhevsk, and will soon add Smolensk,Nizhniy Novgorod, Belgorod, Chelyabinsk and Kursk to its list of locations. Offerithe lowest prices as well as simple and convenient services is the cornerstone ofTele2s marketing policy. This strategy requires special network solutions that allowTele2 to minimize voice transport costs and make the services available to mass

customers.

To reduce infrastructure costs, Tele2 selected RADs Vmux compressed voicesolution. The Vmux-2100 voice trunking gateway employs powerful voicecompression algorithms that greatly increase the amount of voice traffic transmitteover the same trunk, compressing up to 16 full E1 lines (480 concurrent voiceconversations) onto a single E1 line while providing the highest voice quality.

In the first phase of the project, Vmux-2100 gateways were deployed in five Tele2regional departments for connecting cellular base stations to mobile switchingcenters (MSCs). The Vmux devices yielded Tele2 85% savings on leasing E1channels. The project is now being expanded to all 11 regional networks, and movoice compression modules will be added as each network grows.

RADs Vmux Slashes Voice Transmission Costs in

Russias Tele2 Networks

C o m p r e s s e d V o i c e f o r C e l l u l a r B a c k h a

Compressed Voice foCellular Backhaul

Challenge

olution

enefits of RADs Vmux

o minimize operational

xpenses in its GSM networks,nabling Tele2 to offer the

owest cost cellular services

ADs Vmux voice trunkingateways reduce leased lineosts by offering the best voiceompression on the market

while maintaining high qualityoice.

High quality voicecompressionGreatly reduces cellularbackhaul costsCompact, space-savingequipmentFast payback

Te l e 2 , R u s s i a

Vmux minimizes the number of required leased lines.

85% Savings on E1 Leased Lines Allows the Largest RussianCellular Operator to Offer the Lowest Prices to Subscribers

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Corporate HeadquartersRAD Data Communications Ltd.24 Raoul Wallenberg StreetTel Aviv 69719, IsraelTel: 972-3-6458181Fax: 972-3-6498250email: market@rad.com

US HeadquartersRAD Data Communications Inc.900 Corporate DriveMahwah, NJ 07430, USATel: (201) 529-1100Toll free: (800) 444-7234Fax: (201) 529-5777email: market@radusa.com

Case Study

www.rad.com

TeleInCom PK, a Russian partner of RAD Data Communications, designs thenetwork segments according to requirements of the Tele2 technical center andprovides consultations to the operators staff during Vmux installation. For the firsttime in Russia, the project for Belgorod cellular network includes a multichannelrouter module on a Vmux platform, says Alexander Piataev, CEO of TeleInComPK. In addition to voice compression and high quality voice, this solution allowsTele2 to implement a star topology, for the operators convenience.

The project also includes a billing application for Tele2 regional networks based onRADs FCD products, which provide additional resilience for maximumredundancy of the billing system. Tele2 also deploys RADs DXC multiserviceaccess nodes and ASMi-52 modems in its networks.

The RAD name and logo are registered trademarks of RAD Data Communications Ltd. Vmux, Vmux-2100, ASMi-52, DXC and FCD are trademarks ofRAD Data Communications Ltd. All other trademarks are the property of their respective holders. 2004 RAD Data Communications Ltd.Specifications are subject to change without prior notification. All rights reserved.

In addition to voice compression and high quality voice,

this solution allowed Tele2 to implement a star topology

of the network, for the operator's convenience.

Alexander Piataev, CEO, TeleInCom PK

C o m p r e s s e d V o i c e f o r C e l l u l a r B a c k h a u l

Compressed Voice forCellular Backhaul

Te l e 2 , R u s s i a

MSC

Vmux-21004 x E1

BSC

Vmux-2100

BSCVmux-2100

4 x E1

BSC

Vmux-2100

4 x E1

4 x E1

E1

E1

E1