I have the Ooma Telo inbetween my cable modem and router. QoS on Ooma is set to 0 for both up and down. With my ISP I get 30Mbps down/6Mbps up. I also tried setting the QoS upstream on Ooma to 6144 ...but I have the same problem.
Tried making some calls throughout the day today to various numbers. Call quality was TERRIBLE - very choppy at best.
My setup is per recommendation. Ooma Telo is between my cable modem (Cox communications, service is 15MBps down/3 MBps up, measured 25+ MBps down/6+Mbps up) and wireless router (ZyXel X150N).
Don't know what to do next. My colleague has Ooma and says his line quality is better than landline. Perhaps it's my Internet provider? Regardless, looks like I will have to go back to my regular telephone company. Might try to call Ooma support tomorrow.
VoIP doesn't seem to have reached a quality level enough to justify replacing a landline for residential customers.
VoIP test statistics
Jitter: you --> server: 2.2 ms
Jitter: server --> you: 2.9 ms
Packet loss: you --> server: 0.0 %
Packet loss: server --> you: 0.0 %
Packet discards: 0.0 %
Packets out of order: 0.0 %
Estimated MOS score: 4.0
Speed test statistics
Download speed: 4434640 bps
Upload speed: 2834624 bps
Download quality of service: 58 %
Upload quality of service: 75 %
Download test type: socket
Upload test type: socket
Maximum TCP delay: 101 ms
Average download pause: 7 ms
Minimum round trip time to server: 81 ms
Average round trip time to server: 83 ms
Estimated download bandwidth: 29600000bps
Route concurrency: 6.6747246
Download TCP forced idle: 79 %
Maximum route speed: 6472592bps