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| Thread ID: 21465 | 2002-06-26 23:00:00 | Jetstream filters | ron21 (670) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 57537 | 2002-06-26 23:00:00 | I've shifted house and decided to install phonejack filters for my jetstream connection instead of splitting my lines. Now the thing is, when I asked the Telecom operator whether I need to install filters on ALL my jack points, even the ones that don't have a phone connected to them, I was FLATLY told that I would need to buy a filter for all jackpoints. The thing is, when I talked to a Alstrom techie, he reckoned it didn't make sense to have a filter on every jack. So from the conflicting stories, I decided to go with the cheapest option and only buy one fillter for the one phone that we use (instead of buying 6 filters for all jacks) and guess what the outcome was....nothing...as in no problems, my jetstream connection works fine with only one filter. I got my filter from Dick Smith and in all I saved myself just under $100 buy not buying an extra 5 filters. So...does anyone know what the go is with this...are the consumers once again getting ripped off, or am I just lucky? thanks.... |
ron21 (670) | ||
| 57538 | 2002-06-26 23:19:00 | If I were to be charitable, I'd say that the Telecom operator was simply ill-informed. It is also possible that they were thinking of the older single filter "splitter" system that is installed at the point of entry before any phones are connected and thus influences all phone outlets, though only the jetsream connection has the adsl filter applied. I wouldn't worry about it unless you were talking to a competent technical person who was also trying to sell you the filters. Then I would be suspicious! Cheers Billy 8-{) |
Billy T (70) | ||
| 57539 | 2002-06-27 02:38:00 | Hi. You've done absolutely the right thing - you only need a filter in a socket if there is a telecommunications device using or attached to it. Interestingly, when my jetstream wasn't working briefly the other day, I unplugged the modem and connected my dial up modem to the same socket (sans filter) and dialed in, and lo and behold it worked! I really didn't think it would without having a filter on that line! Luvverly. |
Greg S (201) | ||
| 57540 | 2002-06-27 05:23:00 | Before you get too carried away - try making a phone call while you're dialled-in. You'll find that the phone call will log out your connection - at least that's what it does for mine. That's why I'm about to go out and buy a 2nd filter for the phone. It does work fine, it just gets interrupted when you have someone on the phone and someone on the 'Net - hence why they suggest filters for every jack. Much as I'm not a Telefacist fan, I can't blame them for this one. The SharkMeister |
Sharkey (455) | ||
| 57541 | 2002-06-27 06:38:00 | You only need a filter for the jackpoints that have phones/faxes etc connected to them. You do not need to use a filter on the jackpoint for the DSL router/modem. It is also possible to use one filter to do the filtering for the whole house, if you are willing to gut a filter and ha>< it into the white Telecom box at your house. |
-=JM=- (16) | ||
| 57542 | 2002-06-27 06:47:00 | JM is spot on I use 1 filter on whole house, (cheap!) except for the ADSL router phone socket which MUST be unfiltered. |
godfather (25) | ||
| 57543 | 2002-06-27 08:42:00 | hmmm I must check up on that godfather. I know someone that has done that but I think they've got the router filtered as well, I"ll have to check. |
-=JM=- (16) | ||
| 57544 | 2002-06-27 10:51:00 | The signals for ADSL are about 1,500 kHZ (1.5 MHZ). The filters block that from reaching the phones which operate in the 0.3 kHZ to 3 kHZ region. If you filter the ADSL signal out from reaching the router then the router won't work. If you dont filter it out from the phones, there will be lots of "chirps" on the phones and the ringing burst may disconnect the ADSL. ADSL really only uses the "prescence" of the copper circuit whereas the telephone uses the actual circuit. You can put ADSL type signals down the power mains into your house (but I won't go into why its not yet done) also. |
godfather (25) | ||
| 57545 | 2002-06-27 12:00:00 | Godfather, g'day fellow sparky. When I worked at Benmore Power Station SI We would "Telephone" Haywards Sub-station over the high voltage transmission lines. They would then connect us to the Wellington phone system, (graveyard shift only). If it can be done over the high voltage lines, it should be much easier to do over our 230v distribution system, for use with computers? Isn't one of the SI power retailers doing that for E-mails for their customers? Goddie, tell us why it is not done, why not? Poppa John. :-) |
Poppa John (284) | ||
| 57546 | 2002-06-27 12:06:00 | Yes, well power line carrier in those days could barely carry voice data at 3kHz. I have spoken over that link (but never worked for NZED/State Hydro) I have also installed a 200,000 bits per second on 230/400v distribution systems for data, spread spectrum. Thats a lot more recent, I studied in in London a few years back. Transpower now carry multiple fibre optic cores in the earth catenary above the 66/110/220kV lines, I believe much better. 73s |
godfather (25) | ||
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