I have five Obi1062's connected to a Raspberry Pi running FreePBX with Google Voice as the Service Provider. We've had a few problems with latency, but the major issue is that when we try to transfer calls to other Obi phones (extensions on the same DID), it says no call key available. The same is true for when we try to establish a conference calls. I know Google Voice only allows for two channels on the same DID, but this happens even when the phone we want to establish a conference call with is the only phone on a call in the office. Is this a FreePBX issue or an Obi issue? What is the fix? As a side note, is the latency due to the Raspberry Pi or more to do with bandwith and lack of a QoS set up?