A class-4, or tandem, telephone switch is a U.S. telephone company central office telephone exchange used to interconnect local exchange carrier offices...

A Class-5 telephone switch is a telephone exchange in the public switched telephone network (PSTN) that directly serves subscribers and manages subscriber...

Class 4 2-6-0, British steam locomotive BR Standard Class 4 2-6-4T, British steam locomotive Class 4 telephone switch Class 4, contribution class in the...

This list of telephone switches is a compilation of telephone switches used in the public switched telephone network (PSTN) or in large enterprises. Centura...

A telephone exchange, also known as a telephone switch or central office, is a crucial component in the public switched telephone network (PSTN) or large...

The 5ESS Switching System is a Class 5 telephone electronic switching system developed by Western Electric for the American Telephone and Telegraph Company...

The No. 4 Electronic Switching System (4ESS) is a class 4 telephone electronic switching system that was the first digital electronic toll switch introduced...

Standard 1037C. General Services Administration. Archived from the original on 2022-01-22. (in support of MIL-STD-188). Class-4 telephone switch v t e...

(software switch) is a call-switching node in a telecommunications network, based not on the specialized switching hardware of the traditional telephone exchange...

implementations achieved the same switching topology in solid-state electronics. The crossbar switch is one of the principal telephone exchange architectures, together...

would allow the Los Angeles operator to dial via the tandem switch (i.e., class-4 telephone switch) to the Mount Pleasant operator's switchboard, and have...

as a Class 5 telephone switch in the public switched telephone network (PSTN) until the early 1990s, when it was replaced with electronic switching systems...

Crossbar Switching System (1XB), was the primary technology for urban telephone exchanges served by the Bell System in the mid-20th century. Its switch fabric...

PSTN network topology is the switching network topology of a telephone network connected to the public switched telephone network (PSTN). In the United...

The GTD-5 EAX (General Telephone Digital Number 5 Electronic Automatic Exchange) is the Class 5 telephone switch developed by GTE Automatic Electric Laboratories...

IMA2 switch. It then produced the ITS-5 switch, which met the Class-5 telephone switch requirements, the ITS-4 switch, which met the Class-4 telephone switch...

Rural/Urban digital loop carrier, the DMS-10 telephone switch, the DMS SuperNode family of telephone switches (DMS-100, DMS-200, DMS-250, DMS-300, DMS-500...

electromechanical telephone switching systems. Because of the abundance of rotary dial equipment still on use well into the 1990s, many telephone keypads were...

switching systems Class 4 - Toll-access switching systems Class 5 - End-office switching systems Class 5 end-office switches provide local telephone service...

gateway" refers to the Class-4 telephone switches these gateways often connect to, which are also referred to as "trunking switches" because of their use...

interconnection method in the 21st century, used with the Lucent 5ESS Class-5 telephone switch to present day), microwave radio relay and ultimately fiber-optic...

of telephone exchange switches manufactured by Northern Telecom. Designed during the 1970s and released in 1979, it can control 100,000 telephone lines...

ringers. The GTD-5 EAX, GTE Automatic Electric's digital class 4/5 central office telephone switch, was first deployed on June 26, 1982. GTE Automatic Electric...

the need for telephone operators to manually record calls. Modern ANI has two components: information digits, which identify the class of service, and...

A network switch (also called switching hub, bridging hub, Ethernet switch, and, by the IEEE, MAC bridge) is networking hardware that connects devices...

switch Light switch Load control switch Membrane switch MEMS switch Optical switch Piezo switch Pull switch Push switch Railroad switch Sense switch Slotted...

Class 5 end office circuit switch systems and Class 4 toll access circuit switch systems that were connected to Class 3 primary toll circuit switch systems...

Class 5 may refer to: A5-class customs vessels Class 5 telephone switch Class V (U.S. Army), ammunition of all types, and associated items G-5-class motor...

GPRS or telephone line. Domestic NHH import MPANs always have a profile class of 01 or 02. Domestic NHH export MPANs are allocated a profile class of 08...

an international gateway exchange is a telephone switch that forms the gateway between a national telephone network and one or more other international...