Tracy R Reed wrote:
Also, if anyone has digital phone and a Tivo, I'd be interested to know
if you have any problems with the Tivo getting updates. They tell us
that Tivo will not work with digital phone, but I can't for the life of
me figure out why that would be.
Tivo uses a modem to make the call I believe. You are taking digital,
converting it to analog, then convering it to digital, etc. It is
possible that Cox is using some sort of compression or something on
their digital phone line (I assume you use a regular analog phone which
Cox then passes through an A/D converter aka an Analog Telephone Adapter
in the VOIP world) so there are plenty of opportunities for the modem
signal to get trashed. It is similar to how you cannot use an analog FAX
machine through an ATA if you have any sort of compression turned on in
your VOIP. Any sort of packet loss in the VOIP or Digital phone circuit
would cause problems also.
Both time warner and cox use the same proprietary technology to do voice
over IP over CATV. Sadly, it's that simple. Fax (any data transmission,
really) over VoIP is generally a bad idea as even a single instance of
jitter or a single lost packet can fuck a fax to kingdom come. This is
true for data modems like that in the tivo as well, but enhanced error
correction in newer modems does a pretty good job of retraining the
connection after a lost packet or two.
That being said, I wouldn't reccommend any of the cable companies for
phone service if you depend on the phone lines for internet or data
access of any kind. Fortunately though, in my experience, whoever the
cable companies bought their proprietary CATV-access phone systems from
actually designed the hardware properly; the QoS is amazing and rarely,
if ever(*), drops packets or displays jitter. I'm fairly certain that
cox wouldn't be able to get it right if they were left to their own
devices (as is shown from the "quality" of their home and business
internet service, as well as the cable tv service in san diego -- yuck!).
I dunno. Is it wrong for me to want things done properly? Is it really
wrong to want a company to hold themselves to higher standards? :(
(*) I haven't had a phone line now for a number of years, whether it be
through the phone company or one of the cable companies, so present
experience may be different from how it was then
-kelsey
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