Voice trunking gateway lowers costs in Turkey

Turkey's Televersal Telecommunications has selected RAD's Vmux-2100 voice trunking gateway to provide voice traffic from Istanbul to regional POPs over national SDH network.

Turkey's Televersal Telecommunications, which provides international call carriers with access to an efficient global network for transporting voice over the Internet with little or no additional capital expenditure, has selected the Vmux-2100 voice trunking gateway from RAD Data Communications to provide voice traffic from its headquarters in Istanbul to regional points of presence (POPs) over the Turk Telekom national SDH network.

Following the Turkish government's decision last year to liberalise the Turkish telecommunication market, Televersal became one of the first companies to meet the strict infrastructure requirements of the Turkish regulatory body and the incumbent, Turk Telekom.

Since the privatisation agreement went into effect, Televersal has made the largest network infrastructure investment in the country, establishing POPs in 11 cities with 24 PBX switch points.

"With this layout we can cover the entire country, and are one of the few new carriers that have already begun to provide services," states Can Kiral, Chairman of Televersal Telecommunication.

"In order to offer our customers better margins to more destinations, Televersal capitalises on the latest advances in telecom and operations technology available in the market." Compresses up to 16 full E1s onto a Single E1 Line - RAD's Vmux-2100 voice trunking gateway is part of that investment.

"E1 leased line costs make up a substantial part of Televersal's operating expenses," notes Baris Dokuz, Project Manager at Norm Telecom, the local authorized RAD distributor that helped design the solution for Televersal.

"To cut those costs, Televersal chose the Vmux-2100 with its powerful compression algorithms," Dokuz adds.

The multi-port Vmux-2100 greatly increases the amount of voice traffic that can be transmitted over the same trunk, compressing up to 16 full E1 lines (480 concurrent calls) onto a single E1 line, while providing the highest voice quality.

In the first phase of the project, Vmux-2100 gateways were deployed in eight different regional POPs, each unit connecting 8 to 12 E1 voice trunks.

These were then compressed into a single E1 for transport over the SDH network.

At Televersal's headquarters in Istanbul, another eight Vmux units decompressed the traffic for connection to Class 5 switches.

After the initial success, additional Vmux-2100 units were deployed to connect six more sites.

"We were certainly pleased that the Vmux was able to save us money while still providing the high-level of voice quality expected by our international partners," states Kiral.

Connects to local GSM service provider - to provide interconnectivity between international carriers and mobile services, Televersal hooked up with Telsim, a leading GSM operator in Turkey.

Telsim provides coverage throughout 81 of the country's cities employing a network of over 4,400 radio base stations, and also provides international roaming with 309 network operators in 144 countries.

The connection with Telsim is also over the national SDH network, with the Vmux again playing a role, compressing voice traffic from four E1s into a single E1 link, significantly reducing transport costs.

About Televersal - with major stations in Miami, London, Frankfurt, Dusseldorf, New Delhi, Singapore, Vienna, and the Middle East, Televersal provides its partners full access to more than 200,000 ports worldwide and capacity of over two billion minutes per month.

Together with its major partner, Ntera, a leading Internet Telephony Service Provider operating in North America and Mexico, Televersal now offers an international switching capacity of four billion minutes monthly.

About RAD - established in 1981, privately owned RAD Data Communications has achieved international recognition as a major manufacturer of high quality access equipment for data communications and telecommunications applications.

These solutions serve the data and voice access requirements of service providers, incumbent and new carriers, and enterprise networks, by reducing infrastructure investment costs while boosting competitiveness and profitability.

The company's installed base exceeds 8,000,000 units and includes more than 150 carriers and operators around the world.

These customers are supported by 18 RAD offices and more than 200 distributors in 105 countries.

RAD is a member of the RAD Group of companies, a world leader in networking and internetworking product solutions.

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