Digital receptionist audio quality

Discussion in '3CX Phone System - General' started by GeorgeW, Dec 7, 2017.

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  1. GeorgeW

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    Hi,

    Why is the digital receptionist's audio limited to:

    Format: WAV
    Channel: Mono
    Bit rate: 8 kHz
    Sample: 16 bit

    I mean, when converting the original audio to these settings -even if it's a great audio-, the result sounds terrible when calling, like if I were making a call 30 years ago to a far country.

    If the reason is memory consumption, I think you should leave that to the administrator, not all companies have the same concurrent calls and the same server resources.

    Regards.
     
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  2. sip.bg

    sip.bg Active Member

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    This is a limitation of telephony standards, if call is coming from PSTN or ISDN line you will not hear higher frequencies or better sampling.
     
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  3. DL_

    DL_

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    It shouldn't sound 'terrible'. It certainly won't be Hi Fidelity but you should be able to do more in the conversion process to strip out background sound & hiss and change the dynamic range to get acceptable speech using those settings.
     
  4. A. Post

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    If you can use higher end codecs such as G722 the audio prompts should be up to specs. The current maximum is not very impressive. So +1 for the ability for higher end audio prompt.
     
  5. sip.bg

    sip.bg Active Member

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    G.722 is not supported by most VoIP providers and not compatible with PSTN/ISDN/GSM lines/callers.
    It is normally used only for internal calls between extensions.
     
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