Ey up guys, not been around here for a while, but would like to pick your brains on some stuff pleezzze
This may ramble a bit, so please bear with it....
Right, I went FTTC a while back (stayed with TT) on the 38/2 package, with a HG635. All good, 14dB down, 25dB up attenuation, synced at 38 down 2 up, 6dB snrm both ways and on fastpath. Router GUI showed max attainable rates of 20 up and 82 down
Around 6 months back, moved to 76/20 package, synced at 20up and 72 down, fastpath, 6dB snrms again. GUI showing max attainable of circa 18-19 up, 76 down. Good so far...
Over the last few months though, max attainable has dropped to 65 down, and sync to around 56 down. Now I know crosstalk can affect VDSL speeds, but this much??
Anyhow, TT have sent me a HG633 to try, and as of this morning with the 633, I'm getting 14dB down/0.1db up attenuation (I'm assuming the 0.1 is a fw bug on upstream attenuation), max attainable has risen to 74 but sync still at 56 and upstream within a meg of previous figures. However, I unplugged old router and straight away connected new one, which is why (I'm assuming) interleaving has been activated - 1 up and 2800-odd down (boo hiss).
I'm assuming DLM has been triggered for the interleaving issue (how long would this typically take to settle and go back to fastpath?), but what about the sync speed?? Any suggestions/observations/other points would be welcomed... TIA