High speed internet ADSL
ADSL USB Modem (DSL-200) Ihug are offering 256k with a 4gig limit If you go over the limit it defaults to 64k Does anybody have experience with this modem with Ubuntu. Because I have a monitored home alarm and the phone line carries data their installation cost is $148 including modem and wiring installation this month only.
Ron Dean wrote:
ADSL USB Modem (DSL-200) Ihug are offering 256k with a 4gig limit If you go over the limit it defaults to 64k
Does anybody have experience with this modem with Ubuntu. Because I have a monitored home alarm and the phone line carries data their installation cost is $148 including modem and wiring installation this month only.
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I would advise you to go with an ethernet modem and network card (Such as the DSL-302g) rather than a USB-only modem which the DSL-200 appears to be. Also wiring for a monitored alarm is not too difficult to do yourself, I've done it three times already and I think I'm going to have to write up a "howto" on it. Basically you use one filter at the 'demarcation point' (where your alarm connects to telecom's phone line) - connect the alarm to the 'phone' side of the filter and the dsl modem to the 'dsl' side. You won't be able to plug the DSL modem into any other socket, and you won't need any other filters in the house. It's also a good idea to let your alarm company know beforehand (the alarm will report tampering on the phone line) and call them again afterwards so they can make sure the alarm still calls out correctly. -- Disclaimer: Any disclaimer attached to this message may be ignored.
If the alarm is on the phone side of the filter why can't you use ADSL elsewhere and why don't you need filters elsewhere? Unless by phone side you mean behind the filter instead of in the phone socket of the filter which would then make sense. All that an ADSL filter is, is a cheap bandpass filter. ADSL uses frequencies over 8 KHz and telephone under 8 KHz and the filter basically does this split. If you don't put the filter in then you will get hissing on phone lines and the use of the phone can, but not always, cause the ADSL "modem" to drop "carrier". I use carrier and modem in speech marks as ADSL is really lots of modems in effect each running on their own little frequency.
If the alarm is on the phone side of the filter why can't you use ADSL elsewhere and why don't you need filters elsewhere?
Normally, the alarm is permanently connected to the incoming line, and all other phones in the house are connected after the alarm system. In an alarm situation, the system can hang up any call in progress (by disconnecting all the other phones) so that it can dial out. Under normal operation, the alarm system will detect if the line is in use, and make periodic 'status calls' to report things like the condition of backup batteries. You can treat this like a 'normal phone system' but there are two potential problems with this; The alarm system won't recognise the dsl signal and will dial out over the top of it. Since it's not filtered this will disconnect your DSL connection. Having your connection dropped occasionally probably wouldn't bother most people. The alarm system won't cleanly disconnect the DSL signal and it's not filtered, so there's a chance that Telecom's end will continue to make 'DSL noises' and interfere when the alarm tries to dial out. Having your alarm system fail to report an alarm would probably bother almost everyone. -- Disclaimer: Any disclaimer attached to this message may be ignored.
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Ian McDonald -
Ron Dean -
zcat