I was hoping to canvass the opinions of the resident experts as to whether it is worth getting OR out again for FTTC speed issues. I donít want to spend another day at home if the chance of speed improvements is small. I also ought to say that I appreciate my FTTC speed is significantly better than some of those on ADSL, so donít mean to moan.
My FTTC is synced at ~24, and has been since the install last week. The BT speed checker suggests that I should be able to get 33.9/6.5. I live 750m away from the cabinet. Due to error seconds on the line, and a below predicted sync rate, PlusNet expeditiously arranged for an OR engineer to come out. In the end, two engineers came on the same day (only one underground trained). One, an apprentice, suggested from his testing that there may be an underground fault 81 feet away, but he was unable to investigate other than confirming that a full 40/2 was possible at the cabinet and doing a profile reset (causing no improvement). The second engineer replaced my external wiring and junction box (making no difference Ė it was just old), and changed some of the crimp connectors at the cabinet, but (as far as I can tell) didnít lift any manholes (my cable is fully underground). He declared the line to be healthy and stated that the sync speed was just Ďone of those thingsí. Both engineers spent quite a while doing tests with their JDSU etc. Iíve noticed no noise on the quietline test.
Iíve interrogated the OR modem, and attach the figures below. It strikes me that the predominant finding is very high attenuation figures, although Iím clearly not an expert. I suspect (although donít categorically know) that some of my line may be aluminium, which may be a factor.
Max: Upstream rate = 3645 Kbps, Downstream rate = 24464 Kbps
Path: 0, Upstream rate = 1999 Kbps, Downstream rate = 24700 Kbps
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 3645 kbps 24464 kbps
Actual Aggregate Tx Power: 5.9 dBm 10.5 dBm
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 10.2 59.0 67.0 N/A 23.6 67.6 0.1
Signal Attenuation(dB): 15.9 58.1 N/A N/A 23.6 67.6 N/A
SNR Margin(dB): 11.0 10.8 N/A N/A 5.7 0.0 N/A
TX Power(dBm): -4.3 5.4 N/A N/A 9.6 3.1 N/A
The results of PN testing are below;
Current and Last 15 Minute Bin Performance
Last Traffic Count(Upto 15 mins) Current Traffic Count(Upto 15 mins)
Ingress Code Violation 2 0
Egress Code Violation 43 25
Errored Seconds 34 21
Severely Errored Seconds 0 0
Unavailable Seconds 0 0
(sorry about formatting - can't get tabs to work)
My question is whether itís worth getting OR out again? PN have been very proactive in offering to (due to the ongoing sync speed and error seconds). I have a suspicion that this all may be due to possible underground aluminium, but I have no idea whether there are other equally likely explanations. Essentially, would the experts bother with OR or just make do?
Thanks very much!