I have VoIP service with VOIPYourLife.com.
They provided a phone adapter, which is a LinkSys SPA-2102
I have a Qwest DSL Modem (ActionTec M1000) and a LinkSys Router (WRT310N)
I've flashed the WRT with WRT-DD.
My setup is:
Modem --> WRT
The various computers and the SPA are all connected to the WRT.
I've set the DMZ in the modem to point to the WRT.
In WRT-DD, I've set QoS to Premium for the SPA.
Call quality is fine until I have significant download activity on the computers. Then, the VoIP is essentially unusable. Either they can't hear us or we can't hear them or it's terribly choppy.
I'm hoping an expert can help me troubleshoot this and find a mix of settings that will give us good call quality, regardless of what the computers are doing on the network and/or internet.