[opendtv] Re: IPTV versus internet TV
- From: Bob Miller <bob@xxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Fri, 11 Mar 2005 01:58:58 -0500
Manfredi, Albert E wrote:
>John McClenny wrote:
>
>
>
>>http://breeze.brightcove.com/p47258018/
>>
>>
>
>By the way, I did disagree with one analogy he made early
>on: VoIP for IP-based telephony. He says that VoIP is
>comparable to his video over the Internet.
>
>VoIP is somewhat more comparable to IPTV than it is to his
>video over Internet. Because VoIP is a carefully built
>system designed to emulate the telephone experience, using
>protocols such as SIP and MGCP which very explicitly try to
>emulate use of telephones with keypads, and provides a
>gateway to the PSTN. And many VoIP systems provide an
>interface to your standard analog phone, even.
>
>So VoIP is tied to a provider and tries to emulate an
>existing service, JUST LIKE IPTV. And QoS is managed by
>proper provisioning, which again requires a walling-in
>(and use of MPLS etc.).
>
>Whereas his notion of video over the Internet is just a
>"simple" evolution of the WWW. Using the Internet for a
>telephone-like service has been around for some time, and
>results in pretty bad telephone connections. To compensate
>for poor jitter characteristics, you end up with huge
>lags between outgoing and incoming, considerably worse
>than what you'd experience over geosynchronous satellites,
>at least for long distance calls.
>
>Bert
>
I don't find this to be true. Had a conference call with Korea last
night where three people on this end were all using Vonage and it was
perfect, no delay at all seemed like they were next door.
Bob Miller
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