Running On Virtual Machine And Audio Not Intelligable

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Hi All, Running asterisk 11.25.3, the /proc/cpuinfo says Intel(R) Xeon(R) CPU X5675 @ 3.07GHz

lsmod | grep dahdi gives dahdi_transcode 16384 1 wctc4xxp dahdi_voicebus 61440 2 wctdm24xxp,wcte12xp dahdi 225280 11
wctdm24xxp,wcfxo,wctdm,dahdi_transcode,oct612x dahdi_voicebus,wcb4xxp,wct1xxp,wct4xxp,wcte11xp,wcte12xp crc_ccitt 16384 2 wctdm24xxp,dahdi

There are no cards in the VM – just the CentOS 7.4 operating system. I’m actually running 4.4.92 from elrepo as the kernel.

I am using the confbridge with about 100 devices in the “one way”
conference and the audio is not intelligible. Sending audio to a single endpoint is fine.

dahdi_test running when nothing is happening is 99.8 running with the ALL
100 units in conf is about 99.6.

What can I do do get audio where it needs to be ? I believe the environment is VMware.

Thanks,

Jerry

4 thoughts on - Running On Virtual Machine And Audio Not Intelligable

  • DAHDI is required for MeetMe to do the audio mixing. ConfBridge does not need DAHDI since it does its own mixing in Asterisk.

    As for timing sources you have several to choose from of which DAHDI is one of them. See menuselect res_timing_xxx modules. Timing is really only needed when playing back sound prompts when nothing is being received.

    Richard