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Above: A picture of a keyboard from the Nortel TOPS position (terminal)
TOPS - Traffic Operator Position System is a computerized operator
algorithms and table look-ups. Now, a vast array of queues were available, with variable grades of service, served by multiple queues of operators in both primary and secondary capacity. The lookup tables were no longer capable of forecasting for this complex queueing environment.
telephone switchboard
A telephone switchboard is a device used to connect circuits of telephones to establish telephone calls between users or other switchboards. The switchboard is an essential component of a manual telephone exchange, and is operated by switchboard ...
designed by Bell-Northern Research
Bell-Northern Research (BNR) was a telecommunications research and development company established In 1971 when Bell Canada and Northern Electric combined their R&D organizations. It was jointly owned by Bell Canada and Northern Telecom. BNR ...
Labs for the SP-1 4 Wire Switch in the early 1970s and still widely used today by toll and directory-assistance operators. The terminals known as 'TOPS Positions' are usually connected to Nortel
Nortel Networks Corporation (Nortel), formerly Northern Telecom Limited, was a Canadian Multinational corporation, multinational telecommunications and data networking equipment manufacturer headquartered in Ottawa, Ontario. It was founded in ...
DMS-100
The DMS-100 is a member of the Digital Multiplex System (DMS) product line of telephone exchange switches manufactured by Northern Telecom. Designed during the 1970s and released in 1979, it can control 100,000 telephone lines.
The purpose of ...
and DMS-200 telephone switch
A telephone exchange, telephone switch, or central office is a central component of a telecommunications system in the public switched telephone network (PSTN) or in large enterprises. It facilitates the establishment of communication circuits ...
es.
Systems
Below are some of the different TOPS systems developed:TOPS MP
TOPS Multipurpose Position. An earlier-generation operator position for toll and assistance and directory assistance.TOPS - MPX
A previous-generation operator position based on industry-standard personal computer customized with Nortel Networks components and interfaces to provide connectivity with IBM directory databases.TOPS
Traffic Operator Position System. Nortel Networks' operator services system is based on the DMS TOPS switch.TPC
TOPS Position Controller. (Previous generation equipment required for TOPS MP positions) The processing unit provides intelligence and interfaces to the switch for up to four TOPS MP operator positions.Technical details
The Class 5 switch system for Traffic Operator Position System (TOPS) enables the definition of up to 255 unique queues of calls to operators—and up to 255 unique profiles defining the responsibilities of operators and teams, that is, the queues from which they can draw calls. This technology was first introduced in the DMS 200/300. Previously, only four queues were available, all straight-line models, forecasted withErlang distribution
The Erlang distribution is a two-parameter family of continuous probability distributions with Support (mathematics), support x \in
algorithm">, \infty). The two parameters are:
* a positive integer k, the "shape", and
* a positive real number \lambda, ...
Above: A picture of a keyboard from the Nortel TOPS position (terminal)
See also
* Digital Multiplex SystemReferences
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