djtim21
It's all good
Premium
join:2003-12-22
Buffalo Grove, IL
clubs:
|  How is this service is not hindered by distance
Isn't regular telephone (pots) hindered by distance? don't you have to have load coils and bridge taps in order to send pots farther with out an RT "amplifying" the signal?
Maybe we can get some guru's from the bell forums in here to explain that.
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"All that is necessary for the triumph of evil is that good men do nothing.” - Edmund Burke |
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Slidetbone
Mazin Go
Premium
join:2002-11-10
Land O Lakes, FL
edit:
January 13th, @09:48AM
| said by djtim21  :Isn't regular telephone (pots) hindered by distance? don't you have to have load coils and bridge taps in order to send pots farther with out an RT "amplifying" the signal? Maybe we can get some guru's from the bell forums in here to explain that. Distance limitation of DSL is due to non-line powered systems.
The technology COVAD is planing to use is a powered-line technology that will use the electrical properties of copper with the use of repeaters. This is how they can overcome distance.
The system COVAD plans to use takes services from the local access platform, combines multiple services, adds voltage to power the line and sends the combination out of their facilities in a digital format.
At longer wire distances, the repeaters will recover this digital format and recreate a "clean" digital signal for longer distance transmission.
I would like to see what they plan on doing when they try to add this to a copper pair that has current analog service. COVAD does not own their own copper. |
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mc_365
join:2004-07-29
Brooklyn, NY
| reply to djtim21
I think in the context of this article they are refering to DSLs inability to function over long distances. It seems like the the article is saying that this new technology will illiminate the need to have DSL or Cable Broadband to get VoIP service. It would make covad Phone Company. |
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DaSneaky1D
one wall to block them all
Premium,MVM
join:2001-03-29
The Lou
 ·Charter Pipeline
| reply to djtim21
If I understand this right, the phones are powered by the DSLAM. When a call is made, it's caught at the DSLAM, then goes straight over Covad's IP network. It never touches the Bell's PSTN.
Distance only affects DSL sync rates. Since these calls aren't made over DSL, Covad can reach a greater range of potential customers using their own network.
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] :: my trivial ramblings :: [ |
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audiog
join:2004-08-09
Detroit, MI
| reply to djtim21
Re: How is this service is not hindered by distanc
Under the UNE-L rules competitive carriers will be able to lease the loop (copper wires and T1 lines) at cut-rate prices from the Bells. Hence, these competitors must migrate from UNE-P to UNE-L solution.
Under the cheapest route:
UNE-L is still provisioned out of the RT but bypasses the Bell switch port that is suppling Covad the UNE-P element to provide DSL. IN SBC land UNE-P= port + loop. UNE-L is just the loop to your house or business. Covad will have to collocate a softswitch/packet based switch. Basically it is a mini class 5/class4 switch that can handle voice and IP broadband router. This is a Tandem router that can handle very large bandwidths. Tandems are used to connect RTs and such. So who ever is providing the access Tandems to Covad for IP will directly connect to Covad and the consumer instead of going through the Bell
The other model it unthinkable.
That is where Covad builds its own RT and provision the loops out to you. Pulling glass and copper to the pole and leasing the loops to the house. |
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