A question on how DSL does this.

[pulsar]

Hi All

I have DSL & back a few weeks ago, a tree fell up by the Hiway knocking our phone out. No dial tone at all.

After boot up, my AV signature started it's down load. I was online somehow, so I sent bellsouth an e-mail, about the tree. We had no phone for 6 hours & no slowdown in the DSL connection.

How can I have a DSL connection, when the phone line is dead? Not that I don't like the thought, of having a DSL connection when the Phone is out.

I would like to know how it's possable, with the phone not working. I know DSL has a different signal than the one for the Telephone. A tree cut the line, yet the DSL get's through, I don't get it.

Thanks for any help in understanding.

Pulsar

[TwoRails]

DSL and voice are two different signals coming from two different sources. Sounds like the path to the voice part was cut off, but the path to the DSL part was not.

[mbossman2]

DSL signals (as well as voice) from the end node (your house) hit a edvice called a DSLAM. The DSLAM splits the signal and, generally, shoots them up different trunk lines: one off to the voice CO and one to the data center. They aer not always the same place. So if the voice trunk gets zapped the data trunk very well might have been still functional.

[pulsar]

Hi
Thank you for explaning how that works to me. Just one more reason to luv DSL.

Pulsar

[Byte 2.0]

Both answers are correct, I know.

If your DSL goes out when dial tone is restored, that means a POTS (plain old telephone service ) tech restored it by rerouting your lines and the DSL is not always automatically reconnected, at that point you need a DSL tech to come out and verify the path to the DSL source.

[SARGE]

Your telco line is 2 wires. Both are required to talk, but only 1 is required for DSL. I see it regularly. My own line at home was chewed by the squirrels at the pole. Only one of the wires was effected by the chewing. I lost dial tone but my DSL continued. Also, if you have a short anywhere on your line (both wires touching each other in wiring or jack) DSL will still work because it sees the shorted wiring as one wire.