Hi all,
I've had BT Infinity (business option 2) for a few days and since day 2 it has gradually been getting worse. I was originally using the supplied Openreach modem and Business Hub 3, however due to the sudden lack of connection speed (dropping from 76Mbps~ download to about 0.3Mbps~ download, if that) and having to resync I thought it would be one of those causing it.
So I tried my Cisco 887VA directly in the data port and it produced the same symptoms as the OR modem and Business Hub 3, but this time I was able to notice that I had massive spikes of HEC and FEC errors (ranging from 10,000 to 40,000 per second). These spikes didn't occur most of the time, only suddenly, most of the time I was lucky to get about 1 error a second.
I've tried the following to eliminate possibilities that it's something internally here:
- Changed modem and router
- Changed RJ11 cable
- Changed LAN cables (rediculous but I did so anyway)
- Changed cordless phones to corded phone
- Moved all electrical wires or equipment (except the modem) away from the master socket
- Checked the wiring
- Tested 17070 #2 (Quiet Line Test) on the corded phone (no noise noticeable)
Since Saturday it has been raining off and on, and ironically since then it has managed to go worse each time it synced. Until this morning about 1am I was unable to keep a sync for more than one hour before the FEC/HEC errors spiked massively and not recover unless I disconnected and reconnected the RJ11 cable. This morning at roughly 5:30am interleaving depth was introduced by DLM, though I didn't see any HEC/FEC spikes cause that this time. Since then I've noticed only a small amount of FEC/HEC errors on the GUI and graphs, but a massive amount of RSCorr instead.
I'm not certain but I have a feeling the problem exists but the interleaving delay is now masking it. Could someone tell me if the below statistics appears to be normal? Interestingly FEC on the telnet connection shows a massive value compared to the web GUI value given.
Since Link time = 5 hours 26 min 33 sec
FEC: 74604360 401
CRC: 394 48
ES: 51 42
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
I've obviously unlocked the OR modem so I can see this. Everytime I re-sync the noise disappears, for a while, then returns. I still think it exists looking at that FEC count on interleaving, but interleaving is managing to filter it out.