I got a strange problem with my DSL connection.
When I run a speed test I consistently get an internet speed of 5Mbit/s downstream. I have ran the test at different times and weekdays but it is always the same (and I really mean the same +/-1%).
The plan I got with my ISP is up to 28Mbit/s.
When I look into the modem it says it is connection using ASDL2+ with a bitrate of 20.5Mbit/s. (I got approx 2km to the station)
The SNR is ok (don't remember the exact figure) and if I use the modem's BER-test it tells me 0 bit errors over 60 seconds and 20Mbit/s (it actually says the number of bits transmitted but if I divide it by 60 I get approx 20Mbit)
All this together tells me the station is communicating with my modem at 20Mbit/s.
Is this correct?
If so it means that the 5Mbit/s bottleneck is not between the station and the modem.
My ISP does not listen to this and:
- They asked me to try with another modem which I did without any difference (bought a new modem which I could return)
- They asked me to try with different splitter and cable which didn't make any difference.
- They asked me to try different ports on the modem with no difference (I can transfer files between computers on my lan at 100Mbit/s)
I also did some tests myself and found a strange thing.
I turned of ASDL2+ and used G.bis (or whatever it is called). The modem connected to the station with 13Mbit/s and still 0 bit errors. The strange thing is that the speed test now shows 11Mbit/s to internet.
Can anyone explain this?
The ISP wants to send a technician to my house but say that I have to pay for him if the problem is in my end.
In all cases the uplink is approx 1Mbit/s
The modem is a 3 year old Dlink (but I got exact same numbers with a brand new TPlink)
Only one computer was connected to the modem with a cable during the tests (have tried with different computers and also wireless)
What should I do?