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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