end office switch

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end office switch

A telephone central office switch that connects directly to the customer. Also called a "Class 5 switch" or "TDM switch," an end office switch is a computer specialized for TDM-based, circuit-switched telephone calls. It handles services such as call forwarding and call waiting. Such switches are typically from Lucent and Nortel Networks (see ESS and DMS).

Most of the call recording and billing is also performed in Class 5 end office switches, whereas in the past, it was handled in Class 4 tandem switches. Local telephone companies use both end office and tandem switches, which may be the exact same hardware with services differentiated only by software. See tandem switch.

References in periodicals archive ?
GL also offers a versatile line of products called the Digital Central Office Switch Simulator (DCOSS) that is ideal for simulating and testing advanced telecommunications networks such as switches, gateways and transmission systems.
Digital Central Office Switch Simulation/Bulk Call Generation
The EWSD digital central office switch has led the industry in reliability performance for four consecutive years, incurring fewer total minutes of downtime per system than any other major switch in the United States, according to the BPI-Telcodata CO Reliability Report.
These customers use GL Communications' Digital Central Office Switch Simulator (DCOSS) and related products to generate calls that stress networks, assist in Research and Development work, provide Quality of Service and Analysis, as well as support in the deployment of telephony equipment that incorporates Time Division Multiplexing.
telephone company, and through the installation of the first central office switch in the U.
The four trailers, containing a central office switch, power trailer and transmission systems, can travel within hours to any southeastern city the company serves where telephone facilities are damaged or destroyed by tornadoes, hurricanes or fire.
The elimination of the small local switch and cables will result in lower costs while providing a high level of service with new feature options available from the larger, digital central office switch," explained E.
6 /PRNewswire/ -- Farmers Telephone Company has become the first independent telco to purchase an EWSD central office switch from Siemens Stromberg-Carlson.
March 21 /PRNewswire/ -- Siemens Stromberg-Carlson has delivered an ATM (Asynchronous Transfer Mode) central office switch, known as the EWSXpress(TM), to U S West for a distant learning trial between the University of Minnesota Radiology Department and two remote hospital sites.
The deployment consisted of a central office switch homerun architecture with all the fibers terminated within the central office, along with the 1x32 splitters.
When remote subscribers become isolated from the primary central office switch the ESA system manages call control for the isolated network segment.
It is still the only central office switch to be accepted by the federal Rural Utilities Service (RUS) for VoIP, and with this latest INS certification, is also the only softswitch that can be deployed for VoIP in the INS network.

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