Hi, new user here. I thought I'd share my experience with an ECI modem with Huawei cab; Apologies for the following long post.
For many weeks now I'd noticed that my speeds had dropped and ping increased. As it was within normally limits I guessed my ISP (plusnet) would tell me to go away. Every now and then my connection would become very slow and on one such occurance, I tested on
www.speedtest.btwholesale.com and got through to the 3rd test, DS=27Mbps US=2Mbps. Contacted ISP and after a few days they arranged for an engineer visit but the best time for me was in 5 days. They also reported seeing line drops on the weekend I called. In the meantime I wanted to get stats from my modem and found this great site and read about G.INP.
I used to get DS=60-65Mbps, US=15-16Mbps (btwholesale), IPProfile=64-69M and ping ~10ms (speedtest.net). I'm not exactly sure when, but at some point my downloads dropped to ~52Mbps, IPProfile=54M and ping increased to ~ 25ms. When the engineer came he didn't find anything wrong but agreed something wasn't right and tried a DLM reset which didn't change the IPProfile or download speed.
Got myself a HG612 on 24th Apr. It connected/synced at 57620 Kbps which ties up with the IPProfile 55Mbps. The interleaving seemed quite large at DS=909 & US=673 which I assume accounts for the increased ping of ~15ms I was seeing.
After a day the modem reported G.INP was now enabled with interleaving set to 8 and modem syncing at 67357 Kbps but IPProfile still 55. Ping tests improved ~10ms and upload speeds improved ~5Mbps (btwholesale test) to ~15Mbps.
Second day the IPProfile showed as 65 Mbps which seems right for the sync speed. There has been a general improvement except download which is still stuck at ~53Mbps.
There are however three things which puzzle me still.
1) Why is my download speed still consistantly 12M down on my IPProfile after 4 days?
2) I normally do speedtests with btwholesale and speedtest.net with the later showing US 1-2M greater than BT. When I got G.INP'ed (I'm assuming) my US reported by BT dropped to ~10Mbps while SpeedTest stayed at ~17Mbps. When G.INP was enabled on the HG612, both speedtests reported ~15Mbps.
2) Before G.INP, my reported Noise Margins where DS=6db, US=9db but after G.INP DS=6db, US=12db. I wasn't expecting any change in margin as the noise on my line is still the same. When I switched to using a new shorter modem cable, it resynced with the same results.
Any comments would be appreciated.
Thanks