I have been using Voip for quite some time on 2talk without issues, I recently upgraded from a Linksys ATA to a Gigaset A580IP.
Since then I have had issues with dropouts. These only seem to affect the audio at my end and are not present on the call recordings downloaded from 2talk.
Testing has revealed that the usual ping to 2talk is about 29ms, but even small things like download a website can cause spikes of 130ms to 300ms momentarily, which seem to coincide with the dropouts.
I have tried configuring Qos on my router and putting the IP of the phone into the premium traffic group without any luck. It seems Qos can't prioritise the downstream traffic.
The only way I could eliminate the spikes was to set the max download to 5mbps, but that is artificially limiting me to 1/3 of the connection speed.
I can confirm it is downstream traffic by running a speed test on speedtest.net, the ping will spike during the download test, but is fine during the upload test.
How do other people handle voip if something else is going on in the house? I would have thought a 15mbps connection could handle someone browsing the web at the same time as a single call.
I am in CHCH and on Telstra Cable.