Because call and recording are not related.[quote=“ajhalls, post:1, topic:71013”]
It is easy to blame the device (http://www.openvox.cn/products/voip-gateways/210/64/3g-gateway/vs-gw2120-3g-series-1-detail.html), but from the call quality, it seems like it is doing it’s job correctly, it seems like an Asterisk / sox issue, but not sure what to troubleshoot there.
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The issue is how are you recording it. The specs of your server and mostly the type or hard-disk drive and the load of your CPU during the mixing.
If your CPU is under heavy load during the call recording then it will be an issue, also the timing during the recording or if your hard-disk is old enough. Basically most of the commercial apps out there records into a different server when the server handle massive call to avoid this.
And please do not open new threads only because you don’t like the responses in the original one.