FisamoPremium
join:2004-02-20
Apex, NC | From what I've read, TIVO is hit-or-miss with VoIP service. As vonsen  said, the TIVO is converting digital signals to analog (modem); VoIP is converting back to digital, compressing an audio signal into packets, then converting it back to analog at the VoIP to PSTN gateway to call the TIVO server. If enough of that signal is lost during the 'packetization' or internet transmission, the call won't authenticate or complete.
In general, to get TIVO to work, you need a VoIP provider who uses the G.711 CODEC to digitize/'packetize' the audio. I know that Vonage and ATT offer this option, and I'm unsure about other providers. (With ATT you have to enable their FAX and Modem support option.) In addition, TIVO users often need to slow down their connection. Here's a link to a successful CallVantage TIVO connection: »[ATT CV] True Success With Directivo Series 2 & No Addition
If you're not interested in subscribing to ATT's CallVantage service, run a search for TiVo and your desired provider. The bottom line for any VoIP provider currently is that YMMV. Try before you port your number or take any action that's difficult to undo.
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{Earthlink 5M/384 cable (TWC) - Moto Surfboard 4220} - {Home network - WRT54G (HyperWRT 2.0b3 f/w)} - {ATTCV VoIP - Centillium MTA-1 (f/w 6.23L)} |
 vonsenJust BecausePremium
join:2005-01-06 | reply to mcouchey
There have been a lot of Tivo posts, as a search would have shown. You can get your Tivo to work with many Voip providers, although it may take some tweaking. You will also might try checking some forums that cater to Tivos such as TivoCommunity or AVSForum.
To make your Tivo happy, it is essential that you choose a Voip provider that offers an uncompressed Voip connection. This is typically labelled as a 'g711 codec'. Providers that support faxing will generally work better with Tivos. Use a short phone cord and possibly try a 'dsl line filter' inserted backwards between your tivo and the phone line. If your Tivo model allows you to specify the modem speed, it is key that you choose the slowest possible speed. On some Tivos it may be necessary to use an external modem to force the slower speed transmission. Lastly, you may be able to have your Tivo make it's 'Nielsen' call over the internet by purchasing a Tivo serial cable.
If all else fails, you can try different dial in numbers. Some work better than others. If you can convince your Voip provider to reduce your 'packetization rate' to 10ms that will really help, as will disabling 'silence suppression' aka 'voice activity detection'. If you find all of this terminology confusing, then you should take twenty minutes to read though some old posts and it will make more sense to you.
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