Quote from: jpar5 on August 12, 2015, 08:11:31 PM
I have Verizon FIOS and use their VOIP for my main phone line, and an Obi202 with Google Voice for a second free line. My FIOS calls sound fine, but my Obi calls are choppy - cutting in and out to the point were it usually isn't usable. My upstream Jitter reading is terrible - 46Ms and that seems to be the main problem in my testing. Everything else tests out great. Any idea why Verizon VoIP seems fine but Obi doesn't? If my jitter is bad, shouldn't it be affecting both Voip lines? My Fios router is old - doesn't even support wireless n on the wifi portion of it. Think swapping it out could solve the problem?? Thanks for any help/ideas.
Regarding FiOS specifically, most FiOS installations, especially the early ones, don't use VoIP for their telephone service. Instead, it is essentially "POTS over fiber" -- the Optical Network Terminal or ONT at your premises has circuitry that digitizes the analog voice from/to your home telephones into a PCM-encoded stream, and then it traverses your dedicated fiber channel to the Verizon central office over the bridged (not routed) link. This results in extremely high-quality audio, and because it's not being routed in IP packets over the Internet, there are no jitter nor dropout problems.
By contrast, the OBi is using traditional packet-switched VoIP, and is at the mercy of your home network equipment, and anything else (cough torrents/streaming/Netflix cough) you might also be using. The old FiOS routers do have QoS settings you can tweak, but frankly, if it's still a wireless-G router, you ought to upgrade it before wasting any time on it.
I'd suggest reading through the earlier posts in this thread, running the Java-based SIP VoIP simulator I linked earlier, and that will help you understand whether or not you've got a home network issue. Aside from that, in my own experience with FiOS, if you call Verizon and complain, they may be happy to give you a brand new router for free (especially if you ask about renewing your service), or, you can simply buy your own new router if you are only using FiOS for internet and telephone service.
The only reason that would require the use of their router might be if you are also using FiOS TV. You can call and discuss this with them. I've been using my own routers for years on FiOS. As long as you keep their router (unplugged, in a box) for the times when they may tell you that you need to connect it for remote diagnostics, there is no need to use it for internet purposes.