Dual-tone multi-frequency signaling ( DTMF ) is used for telecommunication signaling over analog telephone lines in the voice-frequency band between telephone handsets and other communications devices and the switching center.

In telecommunication, a calling-party camp-on is a service feature that enables the telephone exchange to complete an access attempt in spite of temporary unavailability of system transmission or switching facilities required to establish the requested access.

In telecommunication, a one-way trunk is a trunk between two switching centers, over which traffic may be originated from one preassigned location only.

In telecommunication, part 68 ( Subpart F obsolete ) is the section of Title 47 of the Code of Federal Regulations of the United States governing ( a ) the direct connection of telecommunications equipment and customer premises wiring with the public switched telephone network and certain private line services, such as ( 1 ) foreign exchange lines at the customer premises end, ( 2 ) the station end of off-premises stations associated with PBX and Centrex services, ( 3 ) trunk-to-station tie lines at the trunk end only, and ( 4 ) switched service network station lines, i. e., common control switching arrangements ; and ( b ) the direct connection of ( 1 ) all PBX and similar systems to private line services for tie trunk type interfaces, ( 2 ) off-premises station lines, and ( 3 ) automatic identified outward dialing ( AIOD ) and message registration.

In telecommunication, the term semiautomatic switching system has the following meanings:

In telecommunication, a store-and-forward switching center is a message switching center in which a message is accepted from the originating user, i. e., sender, when it is offered, held in a physical storage, and forwarded to the destination user, i. e., receiver, in accordance with the priority placed upon the message by the originating user and the availability of an outgoing channel.

In telecommunication, a toll switching trunk or toll connecting trunk is a trunk connecting one or more end offices to a toll center as the first stage of concentration for intertoll or long distance traffic.

Packet switching is used to optimize the use of the channel capacity available in digital telecommunication networks such as computer networks, to minimize the transmission latency ( the time it takes for data to pass across the network ), and to increase robustness of communication.

Bromochlorodifluoromethane was introduced as an effective gaseous fire suppression agent around 1973 for use around highly valuable materials in places such as museums, mainframe rooms and telecommunication switching centers.

Overlay networks are used in telecommunication because of the availability of digital circuit switching equipments and optical fiber.

Enterprise private networks were first overlaid on telecommunication networks such as frame relay and Asynchronous Transfer Mode packet switching infrastructures but migration from these ( now legacy ) infrastructures to IP based MPLS networks and virtual private networks started ( 2001 ~ 2002 ).

It is part of the SS7 protocol suite, typically layered on top of TCAP. It can also be termed as logic for controlling telecommunication services migrated from traditional switching points to computer based service independent platform

As the legally constituted body charged with the responsibility for telecommunication links between the country and the rest of the world, TEXTEL provided the transmission, switching and signalling facilities to interconnect with the international facilities of all other countries.

The standard rack arrangement is widely used throughout the telecommunication, computing, audio, entertainment and other industries, though the Western Electric 23-inch standard, with holes on centers, prevails in telecommunications.

A UPS is typically used to protect computers, data centers, telecommunication equipment or other electrical equipment where an unexpected power disruption could cause injuries, fatalities, serious business disruption or data loss.

Also " 1002 ", " 1004 ", " 14XX ", " 15XX " and " 16XX " are free and are used for the telecommunication providers call centers.

The city boasts modern telecommunication buildings, post offices, public hospitals, schools, cable broadcasting and TV stations, and cultural centers.

They find uses in a wide variety of settings from residential homes to hospitals, scientific laboratories, data centers, telecommunication equipment and modern naval ships.

In telecommunication, an isochronous signal is a signal in which the time interval separating any two significant instants is equal to the unit interval or a multiple of the unit interval.

In telecommunication, the term multiple homing has the following meanings:

In telecommunication, a reflective array antenna is an antenna in which multiple driven elements are mounted in front of a surface designed to reflect the radio waves in a desired direction.

* Convergence ( telecommunications ), the combination of multiple services through lines of telecommunication from a single provider

* Multi-carrier code division multiple access, a multiple access technology used in telecommunication systems based on OFDM.

In telecommunication and computer science, parallel communication is a method of conveying multiple binary digits ( bits ) simultaneously.

In return, Yota will use Rostelecom's wire communications channels at their telecommunication equipment sites ; it will gain access to Rostelecom's Internet connection and inter-city backbone links and the company's existing telecommunication equipment sites and data centres.

In telecommunication, the term access control is defined in U. S. Federal Standard 1037C with the following meanings:

In telecommunication, a called-party camp-on is a communication system service feature that enables the system to complete an access attempt in spite of issuance of a user blocking signal.

In telecommunication, a controlled area is an area in which uncontrolled movement will not result in compromise of classified information, that is designed to provide administrative control and safety, or that serves as a buffer for controlling access to limited-access areas.

In telecommunication, a demand assignment is a method which several users share access to a communications channel on a real-time basis, i. e., a user needing to communicate with another user on the same network requests the required circuit, uses it, and when the call is finished, the circuit is released, making the circuit available to other users.

In telecommunication, a distributed-queue dual-bus network ( DQDB ) is a distributed multi-access network that ( a ) supports integrated communications using a dual bus and distributed queuing, ( b ) provides access to local or metropolitan area networks, and ( c ) supports connectionless data transfer, connection-oriented data transfer, and isochronous communications, such as voice communications.

In telecommunication, the term dual access has the following meanings:

In Universal Personal Telecommunications ( UPT ), personal mobility is the ability of a user to access telecommunication services at any UPT terminal on the basis of a personal identifier, and the capability of the network to provide those services in accord with the user's service profile.

A GSM PLMN may be described by a limited set of access interfaces and a limited set of GSM PLMN connection types to support the telecommunication services described in the GSM 02-series of specifications.

* Reduction in telecommunication costs to facilitate Internet access

Telenor offers a full range of telecommunication services in Norway, including mobile and fixed telephony as well as Internet access and content.

Europa was built to develop space access technology and put European-wide telecommunication and meteorological satellites in orbit.

Broadband open access is an issue of policy debate in telecommunications, regarding whether or not companies which own broadband telecommunication infrastructure ( such as cable operators ) should be required to provide access to their facilities for competing businesses which do not own physical infrastructure.

It has been designed to meet the technical requirements of most applications ( in the field of broadcasting, telecommunication and recording on digital storage media ) — low delay, low complexity, error robustness, short access units, etc.

Multi-play is a marketing term describing the provision of different telecommunication services, such as Internet access, television, telephone, and mobile phone service, by organisations that traditionally only offered one or two of these services.

Issues the OPAD deals with include making sure all Americans have access to integrated broadband services, content is regulated to keep children safe on the Internet, competition in the telecommunication and information industries are cooperative and that users privacies are protected.

The use of callback in most developed countries has declined, owing to the liberalization of telecommunication services, which allow more direct access to low-cost international calls, without the need for a time-consuming process like callback.

Typically the larger access devices will be located in a building owned by the telecommunication company near to the customers they serve.

The Australian Ministry of Foreign Affairs and Commerce made one announcement after the FTA-' Australians will now have access to broad band telecommunication with the investment of $ 280 million from Thailand's iPSTAR '.