transcoding

  1. Poor FXS support for FAX in 3cx, provisioning Grandstream ht802 leaves much to be desired

    3cx version: 16.0.3.676 on premise in a hyper-v vm FXS Grandstream ht802 firmware: 1.0.13.7 Provider: deutsche telekom, sip-trunk ngn FXS resides in the same local subnet as the 3cx server Goals: Use codecs G722, ALAW, ULAW, G729 in this order for voice extensions internally and externally...

  2. Disable Transcoding

    If an HD codec is used for internal calls (Opus, G722) and for the provider e.g. only G711 is available, is automatically transcoded at "PBX Delivers Audio active" and the voice quality is severely impaired. In some VPN scenarios it is better if "PBX Delivers Audio" is enabled on the Sip trunk...
    • moritz
    • Thread
    • codec codec preference codec priority g.711 mediaserver g.722 opus transcoding
    • Replies: 5
    • Forum: Server

  3. 3CX Transcoding issue?

    Hi, All, We are having a strange issue on our new 3CX system; it sounds like its transcoding all audio to a considerably lesser quality codec. Basically the issue is whenever the audio goes via the PBX, e.g. if we enable call recording this audio sounds crystal clear inside recorded call wav...

  4. G711 trunk transcoding

    Hi All, Hopefully a simple one, although I have been unable to find a concise answer thus far: Single SIP trunk from provider configured on 3cx VM at the data centre. 3 remote sites with roughly 10 Yealink phones each connecting to the data centre 3cx via STUN. So here's the question(s): 1...
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