Jim Gurd
Premium
join:2000-07-08
Plymouth, MI
 ·AT&T DSL Service
 ·Comcast
| reply to lumpy9138
Re: VoIP isn't POTS....
said by lumpy9138  :That statement is not true. Comcast digital voice comes with a battery back up in the MTA, and has battery back up on the main lines, and will also work with alarms, fax, dial up modems, etc.... Yeah, but how long does the battery last? I'll bet not more than 8 hours. That's fine for short term outages but what happens when the power is out for 2 or 3 days such as after a big storm that knocks down a lot of power lines.
The advantage of line powered systems is that the central office usually has diesel generators that can last a week or more. |
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achuchma
join:2001-04-11
Tampa, FL | reply to sporkme
You are correct...I tend to avoid using "VoIP" to describe the digital transport section of the voice networks since most people tend to associate VoIP and Internet together.
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Bring back chicken and potato chips - Vote Perot! |
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lumpy9138
Premium
join:2003-12-19
Elgin, IL | reply to Jim Gurd
That statement is not true. Comcast digital voice comes with a battery back up in the MTA, and has battery back up on the main lines, and will also work with alarms, fax, dial up modems, etc.... |
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rileyjam514
There You Go Again...
join:2005-06-26
Kearny, NJ
| reply to Matt
The service works in terms of making standard voice calls, and in that respect it is a valid POTS replacement.
In the respect that people expect any other services to work over Earthlink's TrueVoice, like faxes, home alarm systems, dial-up modems and such, it is in no way capable of being called a POTS replacement.
That's the thing about POTS, VoIP and LPV. None can do all of the features without some adjustments out-of-the-box. POTS doesn't have VoIP features, VoIP doesn't have emergency power backup, and LPV can't handle anything but standard voice calls.
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Abortion is murder, Reagan was a hero, Clinton was a sleazeball, Iraq is much better off without Saddam, and the telcos are not trustworthy with American tax dollars. There! I've managed to offend a significant portion of BBR! |
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Matt
Take me down to the paradise city
Premium
join:2003-07-20
Jamestown, NC
·North State Commun..
| reply to rileyjam514
said by rileyjam514 :Well, what I mean is that VoIP has been advertised and presented as a full and valid replacement for existing telephone service that American customers have come to expect over the years. People don't expect that when they switch providers, they'll need to mess around with networking equipment or play with their demarcation point. Even that, the demarcation point, is something that most people look at and are just dumbstruck as to what the heck it does. THAT seamless replacement of phone service is what I'm talking about.... the expectation that things will "just work" 99.9999% of the time. Did you completely gloss over this part of the article?
The interesting bit is that the bundle uses Covad's line-powered voice, which needs no consumer side hardware, works through every jack in the home, and receives its power from the jack just like regular phone service&$#46 The service functions much like typical POTS in that regard until it hits Covad's new Nokia DSLAMs, with traffic routed over Covad's nationwide UNE-L network, avoiding bell infrastructure.
No need for the consumer to "fiddle" at all. |
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sporkme
drop the crantini and move it, sister
Premium,MVM
join:2000-07-01
Morristown, NJ
·Optimum Online
| reply to Jim Gurd
said by Jim Gurd :That having been said, what Earthlink is offering sounds interesting, especially the bit about being line powered. That's a big plus in my opinion. I wonder exactly what type of backup systems they have in place. As far as power is concerned, they have the same backup that the rest of the phone company CO has since they are co-located there.
As far as redundant backhauls out of the CO... well unless they've changed something, Covad is very cheap with that.
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Nothing in all the world is more dangerous than sincere ignorance and conscientious stupidity |
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sporkme
drop the crantini and move it, sister
Premium,MVM
join:2000-07-01
Morristown, NJ
·Optimum Online
| reply to achuchma
said by achuchma :Do keep in mind when you use the POTS network in the US, voice data is usually transmitted on private, dedicated fiber trunks with no other traffic other than voice traffic. If mixed with data, voice will get the highest QoS. VoIP runs on the "best effort" Internet, which is with a pot luck of other data... Actually that was accurate back in 1996 or so. Today most carriers are using VoIP on their own network. It allows for more statistical multiplexing (ie: oversubscription) than traditional TDM voice carriage does.
VoIP does not need to go over "the internet" to be VoIP.
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Nothing in all the world is more dangerous than sincere ignorance and conscientious stupidity |
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Jim Gurd
Premium
join:2000-07-08
Plymouth, MI
·AT&T DSL Service
·Comcast
1 edit | reply to TKJunkMail
said by TKJunkMail :POTS isn't POTS either. If you are making a long distance call in the US, your call is being converted from analog into digital between cities anyway. The Earthlink svc isn't any different in that regard. But that's not the point. POTS is powered remotely by the CO and has backup batteries and a generator to allow calls to be completed even in a power failure. No VoIP system can claim that kind of disaster preparedness.
I remember the power failure of August 2003. I had no power or running water (the pumping stations didn't have backup power) but my POTS line never failed for the entire duration of the outage.
That having been said, what Earthlink is offering sounds interesting, especially the bit about being line powered. That's a big plus in my opinion. I wonder exactly what type of backup systems they have in place. |
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achuchma
join:2001-04-11
Tampa, FL
| reply to TKJunkMail
said by TKJunkMail :POTS isn't POTS either. If you are making a long distance call in the US, your call is being converted from analog into digital between cities anyway. The Earthlink svc isn't any different in that regard. Do keep in mind when you use the POTS network in the US, voice data is usually transmitted on private, dedicated fiber trunks with no other traffic other than voice traffic. If mixed with data, voice will get the highest QoS.
VoIP runs on the "best effort" Internet, which is with a pot luck of other data...
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Bring back chicken and potato chips - Vote Perot! |
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rileyjam514
There You Go Again...
join:2005-06-26
Kearny, NJ
| reply to TKJunkMail
Well, what I mean is that VoIP has been advertised and presented as a full and valid replacement for existing telephone service that American customers have come to expect over the years. People don't expect that when they switch providers, they'll need to mess around with networking equipment or play with their demarcation point. Even that, the demarcation point, is something that most people look at and are just dumbstruck as to what the heck it does.
THAT seamless replacement of phone service is what I'm talking about.... the expectation that things will "just work" 99.9999% of the time.
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Abortion is murder, Reagan was a hero, Clinton was a sleazeball, Iraq is much better off without Saddam, and the telcos are not trustworthy with American tax dollars. There! I've managed to offend a significant portion of BBR! |
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TKJunkMail
Enjoy the sun
Premium
join:2002-03-03
Avalon, NJ
 ·Sprint Mobile Broa..
·Comcast
1 edit | reply to rileyjam514
POTS isn't POTS either. If you are making a long distance call in the US, your call is being converted from analog into digital between cities anyway. The Earthlink svc isn't any different in that regard.
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