Thread View: alt.dcom.telecom
4 messages
4 total messages
Started by Daniel Partridge
Sun, 02 Mar 1997 00:00
telephone interference
Author: Daniel Partridge
Date: Sun, 02 Mar 1997 00:00
Date: Sun, 02 Mar 1997 00:00
3 lines
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569 bytes
Need a filter design to eliminate crosstalk between modem and second telephone line in my house. Anyone?Daniel Partridge
Re: telephone interference
Author: Ron Kritzman
Date: Mon, 03 Mar 1997 00:00
Date: Mon, 03 Mar 1997 00:00
17 lines
1200 bytes
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Daniel Partridge wrote: > > Need a filter design to eliminate crosstalk between modem and second > telephone line in my house. Anyone?Daniel Partridge A filter isn't going to do you any good, since there is nothing for you to filter. Most often crosstalk happens between adjacent non-twisted pairs. Examine the cable in your house. If the pairs are not twisted pairs replace the cable. In the U.S. the non-twisted type of cable most often contains 4 wires: red, gree, yellow, black. Red/Green is your first line, and Yellow/Black is the 2nd. The twisted cable will most commonly have pairs of opposite colors. Pair 1 = white/blue and blue/white. Pair 2 = white/orange and orange/white. Ron
Re: telephone interference
Author: Rob Amos
Date: Tue, 04 Mar 1997 00:00
Date: Tue, 04 Mar 1997 00:00
12 lines
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On Sun, 02 Mar 1997 20:37:29 -0600, Daniel Partridge <partridge@cybertron.com> wrote: >Need a filter design to eliminate crosstalk between modem and second >telephone line in my house. Anyone?Daniel Partridge Make Telstra fix it. If there is any cross-interference between two physically separate phone lines, it's up to them to fix the copper so there is NO interference. Rob.
Re: telephone interference
Author: Mr Bill
Date: Sat, 08 Mar 1997 00:00
Date: Sat, 08 Mar 1997 00:00
17 lines
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DeDaniel Partridge wrote: > > Need a filter design to eliminate crosstalk between modem and second > telephone line in my house. Anyone?Daniel Partridge Dear Dan, The best crosstalk prevention is a well twisted pair; look at the wires where they run parallel, and be sure they are still twisted. The next best prevention is separation. Run them in different paths from the point they become yours, (demark point) That said, crosstalk should not be an issue. Is it possible that the modem is too loud (hot) or too low (long?) -Mr Bill
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