| By :
Dirik Hameed
Leased lines are private high-performance circuits between a customer and a service provider's network. These lines are rented annually and carry voice and data or both. Leased line services are used for internet access or between two sites (point-to-point) and are always active. The lines do not contend or share bandwidth like broadband does so that guaranteed dedicated bandwidth is delivered directly. For a premium cost, a wide-ranging Service Level Agreement (SLA) with a specific fix time as well as a compensation of losses clause will support these leased line services. The contractual requirement of an internet service provider to guarantee service at the current level is established by the SLA. Cheaper services usually do not provide an SLA. Service availability, delivery and performance targets for money back are given by the leading SLAs. Money is given back if specific targets are not met as provided in the the SLA. Connection fees are charged as fixed monthly, quarterly or annual rates in addition to the cost of install set-up. Circuit speed, as well as customer distance to the nearest service provider point of presence (POP), affects the amount of fees charged. A standard RJ45 connector is used by the installed router for a connection. The carrier connects the router to the local service provider POP. Network termination equipment connects to either fiber optic or a copper circuit. Point-to-point, dedicated access, private circuit or private lines are other terms referring to leased lines. Company bandwidth requirements are identified as being in the range of 64 Kbps to 1000 Mbps. Application types used, in addition to how many employees need internet access, should be discovered to find out what speed is required. Applications vary in the total amount of bandwidth used. Businesses needing high quality 24/7 access to the internet use these services with an SLA for controlling indispensable applications using fast speed upstream. There are a great number of benefits when using these services. Privacy and security are provided to customers with these dedicated lines. There is no contention and the lines have direct speed. Bandwidth is in the range of 64 Kbps to 10 Gbps. There are fixed guarantees because of the fast, reliable and private premium circuit local loops. These flexible lines provide redundancy so that outages are reduced and a wide selection of speeds are used. An easy upgrade is bandwidth on demand. On location web hosting is suitable for this service because it is dependable. Disadvantages of this service are that it is not suited for workers at home or individuals because it is frequently expensive to install and rent. There may be as much as 65 working days lead time for installation and that is also contingent upon the distance of the nearest POP. Wide areas of coverage are provided by leased lines and the existing telephone network features working together. Different from broadband, only well served parts of the country have these lines available. The necessary upstream bandwidth for rural companies should be carefully chosen prior to picking out a location. Business broadband connections are designed for from fifteen to twenty users. If a company has more employees that that, it is to their advantage to use leased line services with greater power. Offices that host data at a central office, send large files, or support end user demands with fast speed downloads, must have extensive upload bandwidth for office support. Using business broadband, there can be lower speeds during maximum load hours and line speeds may change at different times of the day. Contention, line quality, and distance from an exchange in addition to several other events can affect the speed of broadband.
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