Silence Compression

CallReplay has the capability to 'trim' silence allowing a significant reduction of RTP and as consequence a better usage of storage space or transmission bandwidth.

Voice Activity Detection is used with IP Trade Turrets to trigger call recording based on the voice signal intensity. It can also be used with Radio Gateways and other analog-to-IP equipment with no call signalling.

To configure silence compression:

  1. Go to Recording > Silence Compression.
  2. Change settings according with your requirements.
  3. Click Save.

  • VAD Sensitivity: the level of voice activation detection from which the signal is not considered silence. The default value is Normal (40dB). Other values are Low (30 dB, noisy environment) and High (50 dB, Catch every breath).

  • Silence Compression: keep or not to-keep the silence within recordings 

  • VAD separation interval: it is enabled when silence is removed within recordings. This is the length of the silence inserted between active signals.

  • Recording prolog duration: it means the length of the interval recorded before the moment of active signal.

  • Recording prolog threshold:

  • Silence before stopping VAD calls: after specified value of silence the recorded call will be stopped.

  • Maximum VAD call duration:

    CallReplay has the capability to 'trim' silence allowing a significant reduction of RTP and as consequence a better usage of storage space or transmission bandwidth.

    Voice Activity Detection is used with IP Trade Turrets to trigger call recording based on the voice signal intensity. It can also be used with Radio Gateways and other analog-to-IP equipment with no call signalling.

    To configure silence compression

    1. Go to Recording > Silence Compression.
    2. Change settings according with your requirements.
    3. Click Save.
    • VAD Sensitivity: the level of voice activation detection from which the signal is not considered silence. The default value is Normal (40dB). Other values are Low (30 dB, noisy environment) and High (50 dB, Catch every breath).
    • Silence Compression: keep or not to-keep the silence within recordings 
    • VAD separation interval: it is enabled when silence is removed within recordings. This is the length of the silence inserted between active signals.
    • Recording prolog duration: it means the length of the interval recorded before the moment of active signal.
    • Recording prolog threshold:
    • Silence before stopping VAD calls: after specified value of silence the recorded call will be stopped.
    • Maximum VAD call duration: