Have a conference room with no network or phone connections in it. Table sits 10 people. Desire a wireless device for conference calls for all ten people to hear the single conversation out of the phone device. Any suggestions and/or experience with wireless RC phones?
What you could do is installing a Jabra USB/Bluetooth speaker/mic attached to a basic laptop with WiFi...
Or what about using one of those Cisco WiFi phones... (sorry if you do not have WiFi we are screw it up).
Because VOIP is not like normal data which can be broken into random packets and sent across the network and reassembled at the end point. VOIP Is a stream and requires a very high end level of transmission, requires prioritization of packets and sequence. All of this is possible with a high end configuration but even then suffers quality issues.