JTD wrote:
Most of the time it is RFI that screws the speed. The sources include TVs, calculators, feature phones particularly cordless, ups, phone and electrical cables running together. But the biggest problem is TVs and feature phones. However I think that parallel lines before the splitter will be the most common problem in the near future. I have been getting 560~590 MB for the past week on night downloads
Telephones kept on-hook have only the ringer circuit connected across the tel line. Phone ringers are designed for a very low frequency use whereas the adsl line carries a high frequency signal. This adsl signal gets absorbed by the phone ringers and even when on-hook, will attenuate this signal. Thats why Gishu got low speeds on his line. Once the phones are connected after the splitter, they will stop interfering as that section is designed to carry that load. I have a fax machine with a fax guard ( drawing 1.5 ma) , my computer's modem and a parallel phone in the fax machine connected after the splitter. During installation, the adsl guy told me not to have any phones across the adsl line.
Regards,
Rony.
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