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Good afternoon,

I have a question regarding a SNOM D785 and the USB Headset support. Currently, a Jabra Engage 65 is connected to it via USB, which basically works quite fine. Just one thing is a bit strange: The wireless headset definitely supports HD voice (tested with another phone), but a call with G722 codec is as expected in HD quality on the wired handset of the phone, but limited to 4 kHz audio (standard phone quality) on the USB headset.

Is there a setting to enable HD audio support for USB headsets? Searching the SNOM Service Hub didn't reveal a hint.

The phone runs the latest firmware snomD785-SIP 10.1.119.10, and the Jabra headset has the latest firmware installed, too.

Thank you.

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Dennis Grunert

End user

Joined: 21.07.2022

3 Comments

  1. Snom Federico Rossi

    Hi,

    I did not find anything about this limitation, please open a support ticket on helpdesk.snom.com with the necessary logs, so we will forward the question to our internal department.

    Thanks
    Best regards

  2. End user Dennis Grunert

    Hi,

    thank you for the answer. Unfortunately, I have no permission to open tickets.

    To reproduce the issue, I created a chirp file starting at 400Hz and increasing to 16kHz (attached as Chirp400-16000.sln16). This can be played using Playback(Chirp400-16000) with Asterisk PBX.
    The test calls were conducted using G722 wideband codec. Here are the results:

    • Total duration of the chirp is 15 seconds.
    • Using the phones internal speaker, the chirp silences after 7 seconds (~8kHz). Logfile attached.
    • Using an USB attached speaker (Jabra PHS001U), the chirp silences after 4 seconds (~4kHz). Logfile attached.
    • Using the same USB speaker connected to a PC, the chirp audible to 12kHz.

  3. End user Dennis Grunert

    Seems to be fixed in FW release 10.1.127.10 - thank you!