Digital Interface Recording Board

To meet the high-performance requirements in the recording monitoring field, DONJIN develops the high-impedance digital recording board. After users make a secondary development based on the API, the recording function can be performed. At present, the products cover almost all recording market applications and signaling formats. Meanwhile, the solution of telephone recording system is simple, secure, and also reliable.

    l  The board adopts the wire tapping recording in a parallel work mode;

    l  One board can process a maximum of 30/120 voice channels, and the full duplex voice can be overlaid automatically;

    l  Provide the synchronous voice playing of multiple channels (conference), multi-channel monitoring, and real-time voice playing;

    l  The volume of voice recording/playing can be adjusted by software, and the AGC is supported.


    Computer Bus

    Recording   Capacity

    Telecom   Interface









    SS1, DSS1, SS7







    SS1, DSS1, SS7

    RIO2400HiZ, BNC-H2×8

    l  Input impedance

     ? Digital interface: ≥ 2 kΩ (adjustable) ;

    l  Voice encoding format:

     ? Support the 24/32 kbps ADPCM (.vox), 48/64 kbps A law/u law/linear PCM encoding, 48/64 kbps A law/u law/linear wave formats;

    l  Protocols: DSS1, SS7, and SS1

    l  Computer bus: PCI/CPCI

    l  Resource bus:

     ? The PCI interface board confirms to the CT-BUS H.100;

     ? The CPCI interface board confirms to the CT-BUS H.110.

    l  Call center management system

    l  Public security organization recording system

    l  Industry transaction monitoring systems such as the funds, banks, insurances, securities, and futures

    l  Control systems such as the aviation, electricity, railways, petroleum, and ports

    l  Governmental and military recording system


    DONJIN recording processing board used in digital trunk recording

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