TelOne (Pvt) Ltd was incorporated in Zimbabwe in terms of The Companies Act (Chapter 24:03) and is 100% government owned. The company's main business is that of provision of telecommunication services and products under three main brands, namely Broadband, Voice and Satellite.
It is geared to become the leading Information Communication Technology (ICT) company, bringing affordable connectivity for everyone everywhere in Zimbabwe. In fulfilment of national broadband requirements, TelOne's vast infrastructure network has the capacity to connect clients through optic fibre, satellite, wireless and copper solutions in line with global trends. The company operates the second largest fixed line network in the Southern African Region.
The telecommunications network comprises of five main components:
- The countrywide switch network of local, trunk, transit and international exchanges for routing calls from source to destination.
- The countrywide transmission network that connects the exchange networks providing the transport media to point of presence.
- The local access network that provides the last mile connection between the customer's premises and the local exchange.
- The customer premises equipment (CPE) such as telephones, faxes and computers, etc. that provide the interface between users and the telecommunications network.
- Gateway facilities linking the global telecommunications network.
This refers to the countrywide network of local and transit exchanges that route the call to the desired destination in accordance with the dialled number. The switching network is the nerve centre of the telecommunications network and serves to cross connect customers.
Backbone Transmission Network
This refers to the countrywide transmission network that interlinks the exchanges and carries the calls across exchange and to the world at large. This is the transport layer, interconnecting cities and towns. The countrywide transmission backbone spans over 3000 km, using microwave radio, fibre optic and, in some cases, open wire systems. The bulk of the network is now digital, but a few links are still analogue.
This is the network that provides last mile connectivity from switches and the customer premises equipment (CPE) that interfaces the user and the telecommunications network. The main technologies employed are as follows;
- Copper cables (underground & overhead wire line)
- Optic fibre cable
- CDMA (Code Division Multiple Access) Wireless
Tel•One is now migrating its principal international links to submarine cable. So far internet links are on satellite, terrestrial and submarine cable. International voice has been on terrestrial (neighbouring countries) and on satellite via Mazowe Earth Stations. The station has two antennas facing the Indian Ocean and Atlantic Ocean Intelsat satellites. Two international exchanges in Harare and Gweru act as the company's gateways.
To ensure guaranteed service up-time and sufficient redundancy is Tel•One has invested in the West Indian Ocean Cable Company (WIOCC) which owns and operates the East Africa Submarine System (EASSy). It is through this investment that Tel•One now boasts of the fastest, most reliable and affordable broadband in Zimbabwe. TelOne also gets broadband internet bandwidth through the West African Cable System (WACS) and SEACOM.
A number of solutions are available for data communications:
- High speed point-to-point data connectivity using modems
- The Managed Data Network (MDN) solution that uses frame relay technology
- Over satellite using VSAT (very small aperture terminal) technology
- The Internet Protocol (IP) based MPLS (multi-protocol label switching) technology
Operations Support Systems (OSS)
These currently comprise the Subscriber Line Management Systems (SLMS), the Billing System and various Network Management Systems.
TelOne boasts of an expansive distribution network, which provides the backbone on which other local telecommunications operators ride.