I have a combo cable router box/modem. My Telo is plugged directly into modem.
When I do the phone speed test, I get very high jitter times. I power cycle the cable modem and things return to normal - for about 3 days. Rinse, repeat. When the jitter gets high, I get a squealing sound on my end - the other side hears just fine.
I've done everything I can do reading here - set the QOS, disabled the DECT, set the MAC address, etc. If I Google this, I see sites like http://www.ehow.com/list_7473646_tips-d ... -voip.html which seems to indicate it is a problem with the VOIP provider. Then there are other articles like http://www.ehow.com/how_2238303_deal-jitter-voip.html which suggest using a CAT-6 cable.
The latter also mentions a "jitter buffer" - anyone know about this on OOMA?
I've just opened a ticket with my ISP - and I fully expect the "deer in the headlights" response. But since recycling the cable modem appears to fix the problem, I suspect this probably is more of an ISP issue.
I've not yet contacted OOMA support directly - that's next on my list too.
Any other thoughts? My wife wants to go back to POTS. Thank you in advance!!
Of course, since your modem is also a router, you'd need to pick up a router. Worth a try given your alternative (POTS) is a new modem/router every 2 to 3 months (paying POTS bills).
Check your Modem/Router owner's manual and see if it has a reset procedure. If so do a reset of the the Modem/Router using the instructions in the Modem/Router owner's manual.
Note: some Modems contain a battery that must be temporarily removed the have a successful Modem reset or reboot.
If after the Modem Reset or reboot, if you continue to have problems, the Modem or Internet signal is probably defective. First try another modem.