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Symmetric High Speed Digital Subscriber Line
supports symmetric data rates of up to 2.320Mbps across greater distances than other technologies, particularly HDSL, HDSL2 and SDSL
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Service Level Agreement
An agreement between a supplier and a customer that sets expectation on a range of quality and performance variables in the supply, operation and maintenance of a service
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A line type used within the PowerTel network where the non-voice frequency of an existing phone line is utilised to provision ADSL service, allowing both voice and ADSL to be provided Partner Information Kit Page 10/81 over the same copper pair.
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Soft switches (or software switches) is a generic term for software used to bridge the gap between the PSTN, PBXs and IP Telephony.
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Sub Network
Found in larger networks, these smaller networks are used to simplify addressing between numerous computers. Subnets connect to the central network through a router, hub or gateway. Each individual wireless LAN will probably use the same subnet for all the local computers it talks to.
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Uses a network device called a switch to filter data between LAN segments and forward it to its next destination.
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Site Visit
A service installation option where PowerTel, or a nominated representative, is required to attend the end customer’s premises.
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Is an application-layer protocol that facilitates the exchange of management information between network devices. It is part of the Transmission Control Protocol/Internet Protocol (TCP/IP) protocol suite.
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Performs the switching function necessary to establish a connection between two telephones.
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A switch is a network device that selects a path or circuit for sending a unit of data to its next destination. A switch may also include the function of the router, a device or program that can determine the route and specifically what adjacent network point the data should be sent to. In general, a switch is a simpler and faster mechanism than a router, which requires knowledge about the network and how to determine the route.
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A system which allows the temporary connection of the telephone of the calling party with the telephone of any other party selected by the calling party.
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