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SYSTEM OF CALLS REGISTRATION 

The given system is intended for registration of telephone conversation.

The implementation of the given systems provides protection of unapproved access and enables to: 

  • determine automatically call and number of subscriber;
  • carry out automatically registration of date, time and phone conversation duration. 

Simultaneous recording of the incoming and oncoming messages up to 8 channels is carried out.
Listening of current conversation and archiving of speech information is carried out.
Has an opportunity to make recording of telephone conversations on a hard disk, to archive and delete earlier recorded conversations.

The main units of the system : 

  • IBM PC with monitor;
  • IBM PC with monitor;
  • Digital input /output board;
  • Unit of analogue-digital processing (ADP);
  • Interface cables;
  • Software.

 The given system is used in automatic telephone exchange, exchange, banks, air services, security systems, military services, telecommunication systems etc.

SPECIFICATIONS 

Number of telephone channels  8
Bussed interface  ISA-16
Clock rate  10 kHz
Frequency range  300…3400 Hz
Dynamic range  not less than     65 dB
Infiltration factor between channels  minus 70 dB
Input impedance  2,4 kOhm
Power supply of ADC unit  220 V

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