general_koffi
Expert Member
There's a lot of noise on my telephone line. You can hear it as static over the phone, and my SNR margin is not great. Normally it doesn't interfere with my internet, but recently the noise has been spiking and causing some sync problems.
The funny thing is that I can temporarily reduce the noise on the line by doing one of two things... It improves for a few minutes if I cause activity on the line by repeatedly picking-up and hanging-up the phone a few times. You can hear the noise go away, and my SNR margin improves from single digits to the mid teens. This doesn't last long, though.
A more lasting solution is to take a phone cable and plug both ends of it into one of the line extensions - repeating a few times. I got this idea from Google... This short apparently clears away the noise like nothing else. It seems to last longer than just fiddling with the phone.
If anyone else is having SNR woes, they may want to try the trick with the wire. But what is causing this problem? Why does the noise go away when I stimulate the line like this, but then creeps back in again later? If it was dodgy phone cabling, surely causing a short wouldn't help? Could interference from poorly shielded electrical wiring or equipment be to blame? Is something not grounded properly?
The phone has a filter, and the problem persists even if the ADSL router is the only thing plugged in to the phone line. It's one of those awful Billion 5200's, by the way, but it's done pretty well with a really terrible line. I've been thinking about getting a Netgear router, which allegedly handles bad lines better.
The funny thing is that I can temporarily reduce the noise on the line by doing one of two things... It improves for a few minutes if I cause activity on the line by repeatedly picking-up and hanging-up the phone a few times. You can hear the noise go away, and my SNR margin improves from single digits to the mid teens. This doesn't last long, though.
A more lasting solution is to take a phone cable and plug both ends of it into one of the line extensions - repeating a few times. I got this idea from Google... This short apparently clears away the noise like nothing else. It seems to last longer than just fiddling with the phone.
If anyone else is having SNR woes, they may want to try the trick with the wire. But what is causing this problem? Why does the noise go away when I stimulate the line like this, but then creeps back in again later? If it was dodgy phone cabling, surely causing a short wouldn't help? Could interference from poorly shielded electrical wiring or equipment be to blame? Is something not grounded properly?
The phone has a filter, and the problem persists even if the ADSL router is the only thing plugged in to the phone line. It's one of those awful Billion 5200's, by the way, but it's done pretty well with a really terrible line. I've been thinking about getting a Netgear router, which allegedly handles bad lines better.
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Even then, he'd probably blame it all on my router.
