Nigeria has one of the largest telecom markets in Africa. The Nigerian Telecommunication sector has evolved over the years to an oligopolistic market structure a small number of firms have the majority of market share.
Thes services are usually carried out through: Since the beginning of the 90s, Mobile Telephone Services CellularPaging and Electronic Mail have been part of the services offered by NITEL which, hitherto enjoyed the monopoly of Telecommunications services provisions, operations and maintenance untilwhen a decree establishing the Nigerian Communications Commission NCCliberalised terminal ends equipment and value added services for competition and private sector participation.
In order to carry out the above services the following facilities currently exist in the country: See Figures 1 and 2 Listed below are the various media through which some of the telecommunications facilities are delivered to the populace in the country.
These include those services that are provided by NITEL as well as those that are commercially available on a large scale basis. VSAT systems integrate transmission and switching functions to implement pre-assigned and on-demand assigned links for point-to-point and broadcast networks.
Hosts and terminals are connected directly to the VSAT equipment earth station making the need for a satellite central office unnecessary. In contrast to terrestrial trunks, addition of bandwidth is effected easily by the service provider.
It can support relatively high bandwidth of 2mbps. VSAT can be configured for broadcast one-way or interactive two-way data communications.
VSAT services have been found to suffer from long network delays caused by the up and down links through the atmosphere and space. The delay is of the order of microseconds compared with 15 microseconds for a typical terrestrial networks. However, VSAT has been proved to have a higher error rate than fibre optics.
Private Wire Private wire is a dedicated point-to-point circuit which could be provided over cable or radio link system. This is being provided to customers for private and exclusive use.
Private Wire facilities, also called local exchange are dedicated lines or local exchange area leased circuits.
It is being provided on Analogue up to 9. They are in Two categories: Private Wire Full Time b. Private Wire Part Time 3. Temporary Exchange Lines These are voice grade circuits provided to serve at exhibitions and special events on temporary basis.
The circuits could be provided on point-to-point or point-to-multi-point as may be required by the customer. Below is a summary of the currently available infrastructure in all the NITEL installations in the country.
Table 1 illustrates those infrastructures that are currently available in some states and zonal headquarters of NITEL. By the nature of their organisation and mandates they play a leading role in the development of raw materials and production methods for industrialisation.
Most of them attract experienced scientists, technicians and engineers to carry out the tasks of their respective institutes. A good number of these Research Institutes are also bracing up to those new challenges in local sourcing of raw materials and effecting technological innovations.Telecommunications, Media & Technology.
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