yock
TFTC
Premium
join:2000-11-21
Fairfield, OH
| reply to insomniac84
Re: Tough one
said by insomniac84  :It is fair, some cable companies have offered digital telephone service for a while, which is not VoIP. How exactly is Digital Phone *NOT* VOIP?
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nozzer
join:2004-06-25
Waltham, MA
| I can assure you that neither the RCN "digital phone" I have, or the Comcast digital phone I had is "voice over IP". It modulates a digital signal over the coax and is terminated at the CMTS, where it is carried onto the phone network. Also the cable companies have direct CO connects for 911 service etc, and you have to pay similar line charges and fees to the ones verizon charge.
Where Verizons claims really fall down is this - although they have a "phone franchise agreement", they could notionally offer TV+Internet+VOIP over FIOS, and not be collecting any revenue for the franchise agreement they have.
noz
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Cod
join:2000-07-05
Greensboro, NC
| reply to yock
said by yock :How exactly is Digital Phone *NOT* VOIP? It's 2 different technologies. They are not the same. Someone above posted what the differences are:
VOIP uses data packets going through your ISP.
TW's digital phone uses reserved bandwidth on their cable facilities for a seperate avenue for phone service. In other words, if you have RoadRunner service with time warner and digital phone service, they are totally seperate. |
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audiog
join:2004-08-09
Detroit, MI
| reply to yock
Digital phone is what most of us have from the telcos. The call travels up the loop to a point that it is converted to digital and is routed to its destination via fiber trunks or copper T1s. The phone switch is all digital now and can pass the four streams of ATM. It can even port an analog signal but that just takes up lot of bandwidth that you can route other things with it. The next step in telco world is to only allocate the bandwidth for your phone line when you pick up the line right now that bandwidth is allocated all of the time. That is one of the gains with the packet based network that Verizon and others are deploying. |
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