Having moved house and switched to Plusnet as my ISP I've always had a really slow internet connection, somewhere between 1.5 and 2MBps, sync rates have varied from 1700 to 2400 with SNR going from 9 to 12dB. I've had the line checked and after a couple of disconnections the Openreach engineers have been out a couple of times to sort the line out, apparently its now ok. Plusnet say my connection is about as good as they'd expect and won't do anything more, so I've been doing some more investigating myself.
I have 2 routers, the Plusenet freebie (a Sagecom 2704n) - this reports a line attenuation of 64dB on ADSL 2+ which is consistent with the kind of speed I'm getting. SNR on this has been down at 6dB but is now varying from 9-12dB
The other router, an older D-Link DSL 2640R reports a line attenuation of 53.5dB also on ADSL2+ which should give me a sync rate of ~4200 - the trouble is I think this router is faulty - it won't accept the current date/time, generates thousands of HEC errors per hour and drops and resets the connection every 10 - 24hrs, so it never gets to the max sync rate it seems to be capable of.
I can't understand why the line attenuation is so different between the 2 routers. If I force the Sagecom router to use ADSL2 only by disabling ADSL2+, the reported line attenuation drops to 54dB but the sync rate still doesn't get much higher than 2200. My question is, would it be worth me buying a better router in the hopes that this sees a line attenuation of ~53dB and is stable enough to get to a sync rate of ~ 4200 (still poor, I know), or is the line the problem? I live much closer to the exchange than my brother-in-law (same exchange) who gets sync rates of up to 6500 and SNR stable at 6dB
Any advice greatly appreciated, thanks.