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The TA-57 can be used for induction calls working with 2-wire lines in an OB (local battery) or a ZB (central battery) operation. It can be used to transmit voice messaging in ranges between 0.3 and 3.4 kHz, with a calling frequency of 15 to 45 Hz. Absolute signal level at output of transmission path with a 600Ω load ranges between -3 and +3 dBu.
Field telephones are telephones used for military communications. They can draw power from their own battery, from a telephone exchange (via a central battery known as CB), or from an external power source. Some need no battery, being sound-powered telephones . Telephone linesmen ford Lunga River during the Guadalcanal Campaign of World War II.
The Moscow–Washington hotline (formally known in the United States as the Washington–Moscow Direct Communications Link; Russian: Горячая линия Вашингтон – Москва, romanized: Goryachaya liniya Vashington–Moskva) is a system that allows direct communication between the leaders of the United States and the Russian Federation (formerly the Soviet Union).
Telephone numbers in Russia are administered by Roskomnadzor, and Ministry of Digital Development, Communications and Mass Communications of the Russian Federation. Russia's National Numbering Plan (NNP) is a four-level telephone numbering plan with local, zone, country, and international scopes, implementing a closed numbering plan, in which the number of digits of all national significant ...
Telephone magneto. A telephone magneto is a hand-cranked electrical generator that uses permanent magnets to produce alternating current from a rotating armature. In early telegraphy, magnetos were used to power instruments, while in telephony they were used to generate electrical current to drive electromechanical ringers in telephone sets and ...
Telecommunications in Russia. The telecommunications in Russia has undergone significant changes since the 1980s, radio was a major new technology in the 1920s, when the Communists had recently come to power. Soviet authorities realized that the "ham" operator was highly individualistic and encouraged private initiative – too much so for the ...
08 was used and continues to be used to contact the telephone repair bureau; 09 was a telephone directory service (search for a phone by the name of the organization or the subscriber). In addition, in Moscow there was and continues to operate a toll-free telephone number 100 to get the current time. The free telephone service of the exact time ...
A leading Russian journalist has had her phone compromised using Israeli spyware, researchers said Wednesday, the latest sign that phone hacking tools are being used to spy on media workers and ...