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Dedicated Internet Access (DIA)
If you send and receive large volumes of data and need a secure and reliable service that provides a fast uncontended, multi-user access you can choose from a wide range of dedicated internet connections including Leased Lines (SDH Private Circuits) and Ethernet Private Circuits, available at speeds from 64kbps to 1Gbps.
All services are available fully managed and come with service level guarantees to ensure your connection never lets your business down. SDH (Synchronous Digital Hierarchy) is a standard technology for synchronous data transmission on optical media and many business customers use 2 Mbps, 34 Mbps or 45 Mbps speeds. SDH uses the following Synchronous Transport Modules (STM) and generally only wholesale carriers use higher bandwidth circuits: STM-1 (155 Mbps), STM-4 (622 Mbps). STM-16 (2.5 Gbps), and STM-64 (10 Gbps).
Leased Lines (SDH Private Circuits)
A leased line is a private high-performance circuit leased by a common carrier between a customer and a service provider's network. It is rented on an annual basis and usually carries voice and data or both. Leased lines are mostly used for either internet access or used privately between two customer sites. Unlike a dial-up connection, a leased line is always active. Similarly unlike broadband, a leased line is not contended or shared and delivers dedicated guaranteed bandwidth straight to the internet backbone. Customers pay a premium for a leased line and it is supported by a comprehensive Service-Level Agreement (SLA) with a guaranteed fix time and a compensation clause. Otherwise referred to as a point to point, private circuit, private line or dedicated access. Ethernet Extension Services (EES Circuit) - formerly known by BT in the U.K as LES Circuits (LAN Extension Services) or LAN link circuits by COLT) is a point to point circuit available at speeds of 10 Mbps, 100 Mbps and 1000 Mbps. Used originally as a cost effective way to extend a LAN to a nearby building or campus without needing routers. Today many ISP’s use EES tail circuits to deliver low cost internet access over short distances in metropolitan areas. Radial distances are limited to 25km and sometimes are charged on a per metre basis. If a customer needs robust, secure high bandwidth connectivity under a 25km distance an Ethernet circuit is a good choice. Upfront charges can be high but may be amortised by Iyour provider. On-going charges are much lower than 2 Mbps or multiple 2 Mbps lines, hence their widespread use today. EES Circuits are available in: 10 Mbps 100 Mbps 1 Gbps 10 Gbps | |||||
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