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Carries out following functions:
1. Pulse - transition in a regime of a pulsing set;
2. Flash - short-term rupture of a line;
3. SPKR (Speaker) - turning on of loud communication;
4. Vol (Volume) - a key of a volume control;
5. LNR/Pause - repetition of last typed number/feeding into of 4 second spacing intervals at a set of number;
6. MEM (Memory) - a key of a ringing of telephone numbers from memory;
7. STO (Store) - a key of conservation of telephone number in memory;
8. POL (Polarity) - a regime of definition of polarity;
9. Talk-a regime of holding of a line;
10. Monitor-a regime of a tall impedance;
11. Mute-switching-off of a microphone at conversation.
A feed: the battery "crone" (into a complete set of delivery enters).
The manufacturer: "Tempo."
Number under the price-list: Н5019.
*Импеданс — a complex impedance of twisted pair for a harmonious signal. Meaning of a standard impedance for twisted pairs at a data transfer 100±20 An ohm at frequency of 100 MHz.
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Сontrol equipment and means of automation
Н50. Devices for measurement and the control of parameters of telephone and computer networks.
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