Dry DSL Line
Moderators: Bill Smith, Pilot
Dry DSL Line
I Have just a Dry DSL line @ 786 w/ Verizon. I still have the incoming line running through my whole house DSL filter to my Westell Versalink modem. Should I disconnect the DSL filter? I'm having some echo problems w/ one number that I call and some choppy calls with others. When my service changed to DSL only I took of the DSL filter but could not get to the internet.
Re: Dry DSL Line
I you got a dry pair from Verizon, feel lucky! But, to give you the info you want/need is make sure that your hard line goes ONLY to your modem and DO NOT place a filter on the line! If I read this right you are LUCKY to even be getting a ADSL connection to Verizon! The filter is designed to BLOCK the loop of the DSL connection so the rest of your phone system does not present a large load to your modem. Without the filter other phones on the circuit would load the modem and burn it out... If you have a phone(s) connected to the line, even though it is a dry pair, you still must use a filter to unload these from the modem. Best bet is disconnect ANY phones on the line unless the DLS line is completely isolated from the phones! As in CUT THE LINE to the other phone(s)!!!jp28md wrote:I Have just a Dry DSL line @ 786 w/ Verizon. I still have the incoming line running through my whole house DSL filter to my Westell Versalink modem. Should I disconnect the DSL filter? I'm having some echo problems w/ one number that I call and some choppy calls with others. When my service changed to DSL only I took of the DSL filter but could not get to the internet.
Hope this helps you...
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testing123
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Ahem, the filter does not do anything to protect the modem from the telephones. There is nothing to protect. The filter is nothing more than a bandpass filter. It is very similar to a crossover filter you might be using in your stereo system, which sends high frequency sounds to your tweeter and low frequency sounds to your woofer.
The DSL filter sends low frequencies (0-5000Hz) to your telephone and high frequencies (7000Hz and up) to the DSL modem. Most DSL modems have the high-pass half of the filter built right in. Most phones, though, do not have the low-pass half of the filter built into them.
So, if you have a telephone connected directly to the line without a low-pass filter in between, two things can happen. First, your phone may be able to hear some of the DSL signal and present it to your ear, disturbing your conversation. Second, your conversation may hit a peculiar harmonic that gets transmitted into the phone line and momentarily disturbs DSL communications, causing the DSL modem to send (or receive) a corrupted packet.
You don't have to take my word for it. Just get out your tone generator and oscilloscope and check it out for yourself.
None of this can cause any physical damage to any piece of equipment anywhere in the system.
The DSL filter sends low frequencies (0-5000Hz) to your telephone and high frequencies (7000Hz and up) to the DSL modem. Most DSL modems have the high-pass half of the filter built right in. Most phones, though, do not have the low-pass half of the filter built into them.
So, if you have a telephone connected directly to the line without a low-pass filter in between, two things can happen. First, your phone may be able to hear some of the DSL signal and present it to your ear, disturbing your conversation. Second, your conversation may hit a peculiar harmonic that gets transmitted into the phone line and momentarily disturbs DSL communications, causing the DSL modem to send (or receive) a corrupted packet.
You don't have to take my word for it. Just get out your tone generator and oscilloscope and check it out for yourself.
None of this can cause any physical damage to any piece of equipment anywhere in the system.