It's theoretically possible the ATA could be defective, but unlikely if you purchased it from a reputable (non-eBay) source.PAP2[T] ATA on voip.ms. About 1 out of every 5 calls I get a dial tone, I dial the number and get nothing - no sound, no connection. [...] Sometimes I see only 2 of the 4 LEDs shining - then I know I have to power cycle it [...] could it be defective?
Try the following: on the SIP tab of your device, you should set SIP T1 to 1 to mitigate a problem that causes the symptoms you describe. You should also set Reg Retry Long Intvl to 120 so that your device recovers more quickly if it does fail.
I can't remember if you have a Tomato router. If your 2Wire modem is also your router, then you don't and you can ignore this. But, if you do, you should enter Conntrack/Netfilter settings and configure Unreplied UDP Timeout to 10.
If neither of those solve the problem, let us know, and we can do additional troubleshooting.
Is it that the message itself was garbled? In other words, you could hear "You have one new message. Press one for new messages..." but you could not hear the voicemail message?Once I couldn't make out what message a person had left on voicemail.
If I understand you correctly your issue is likely due to a problem some DIDs are having with the Toronto and Montreal servers. VoIP.ms is currently in the middle of deploying new Toronto and Montreal servers; in the meantime you can switch to Chicago and see if that solves the problem. Note that you will need to re-record your unavailable and busy voicemail messages.
If I misread what you wrote please correct me
Just to note, QoS is typically implemented in the router, not the modem. So you can use QoS just as easily with ADSL or with Cable. Personally, I'd wait a few more months before getting TekSavvy Cable as the popularity of their cable product was unanticipated and they and Rogers are having a hard time meeting the huge demand.