Telephone network

Network engineeringtelephonefixed and mobile networksnetworkstelephone infrastructuretelephony network
A telephone network is a telecommunications network used for telephone calls between two or more parties.wikipedia
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Telephone call

callphone callphone calls
A telephone network is a telecommunications network used for telephone calls between two or more parties.
A telephone call is a connection over a telephone network between the called party and the calling party.

Telecommunications network

networkcommunication networkcommunications network
A telephone network is a telecommunications network used for telephone calls between two or more parties.

Integrated Services Digital Network

ISDN ISDNISDN30
ISDN is a circuit-switched telephone network system, which also provides access to packet switched networks, designed to allow digital transmission of voice and data over ordinary telephone copper wires, resulting in potentially better voice quality than an analog phone can provide.

Telephone company

telecommunications companytelephone companiestelco
Public telephone operators (PTOs) own and build networks of the first two types and provide services to the public under license from the national government.

Mobile virtual network operator

MVNOmobile virtual network operatorsMVNOs
Virtual Network Operators (VNOs) lease capacity wholesale from the PTOs and sell on telephony service to the public directly

Telephony

digital telephonytelephonedigital
Virtual Network Operators (VNOs) lease capacity wholesale from the PTOs and sell on telephony service to the public directly

Wireless network

wireless networkingwireless networkswireless

Lawful interception

lawful interceptInterceptioncommunications interception
Lawful interception (LI) refers to the facilities in telecommunications and telephone networks that allow law enforcement agencies with court orders or other legal authorization to selectively wiretap individual subscribers.

12-channel carrier system

12 channel carriercarrier systems
In the U.S. telephone network, the 12-channel carrier system was an early frequency-division multiplexing system standard, used to carry multiple telephone calls on a single twisted pair of wires, mostly for short to medium distances.

Defense Red Switch Network

DRSN
The Defense Red Switch Network (DRSN) is a dedicated telephone network which provides global secure communication services for the command and control structure of the United States Armed Forces.

SORM

System of Operational-Investigatory Measures (SORM)SORM systemSORM''' and '''SORM-2
SORM is the technical specification for lawful interception interfaces of telecommunications and telephone networks operating in Russia.

Cordless telephone

cordless phonecordless phonescordless telephones
The base station is connected to the telephone network through a telephone line as a corded telephone is, and also serves as a charger to charge the handset's batteries.

Information and communications technology

ICTinformation and communication technologiesinformation and communication technology
The term ICT is also used to refer to the convergence of audiovisual and telephone networks with computer networks through a single cabling or link system.

Waveguide filter

corrugated-waveguide filterdirect coupling filterdirectional filters
Examples of microwave filter use are found in satellite communications, telephone networks, and television broadcasting.

Flood search routing

In a telephone network, flood search routing is non-deterministic routing in which a dialed number received at a switch is transmitted to all switches, i.e., flooded, in the area code directly connected to that switch; if the dialed number is not an affiliated subscriber at that switch, the number is then retransmitted to all directly connected switches, and then routed through the switch that has the dialed number corresponding to the particular user end instrument affiliated with it.

Electronic music

electronicelectronic musicianelectro
It achieved viable public interest and made commercial progress into streaming music through telephone networks.