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[Jimadine]

A week ago I replaced an old Speedtouch dangling microfilter with a new BT MK3 faceplate, primarily for aesthetics but also with a slight hope the newer technology might give a boost in speed. Initially, on both accounts I was happy. I have a standard ADSL2+ package with EE, and prior to fitting the faceplate had been syncing at just under 5Mbps, with a stable connection. After fitting the faceplate I noticed that my sync speed had increased to about 6Mbps. However the day after I fitted it I found that FaceBook messenger voice calls from my Android phone were choppy, with "robotic" speech from the other person, but apparently I sounded fine. And I was stood about two metres from the router. No other devices were on the network at the time. I also subsequently found that my Internet radio kept cutting out. There had been heavy rain but I don't recall this causing any problems previously. I removed the faceplate and put back the old microfilter and everything was fine, albeit back to "normal" speeds. After a few days I decided to try the faceplate again. I installed it first thing in the morning and again it synced at 6Mbps. When I arrived home from work I checked my email on my phone, checked the DSL line stats on the router and then attempted to check the VOIP with a sipgate echo test — and at that point the router proceeded to restart itself! Just before it restarted I had noticed the SN margin had dropped to 6.0 / 1. After the restart the router then synced at just over 5Mbps and has stayed that way since, having been stable. The SN margin seems a bit up and down, but hasn't dropped to dangerous levels again since the restart.

Current stats:
         

Code: [Select]

Uptime: 1 day, 19:02:07
Modulation: G.992.5 annex A
Bandwidth (Up/Down) [kbps/kbps]: 1,126 / 5,122
Data Transferred (Sent/Received) [MB/GB]: 63.34 / 1.28
Output Power (Up/Down) [dBm]: 12.0 / 0.0
Line Attenuation (Up/Down) [dB]: 19.0 / 34.5
SN Margin (Up/Down) [dB]: 6.0 / 3.5
Vendor ID (Local/Remote): TMMB / IFTN
Loss of Framing (Local/Remote): 0 / 0
Loss of Signal (Local/Remote): 0 / 0
Loss of Power (Local/Remote): 0 / 0
Loss of Link (Remote): 0
Error Seconds (Local/Remote): 6,422 / 0
FEC Errors (Up/Down): 0 / 149,179,896
CRC Errors (Up/Down): 0 / 204,934
HEC Errors (Up/Down): 0 / 173,383
Line Profile: Fast
Has anyone else experienced anything similar? I'm hoping it'll remain stable and that the problems experienced were just teething problems. Otherwise it's back to the dangling microfilter.

Thanks!

[JGO]

Not met anything like your experience but you say " an old Speedtouch dangling microfilter " and "the network". I wonder,  did you have several extensions with only one ufilter ?

 Could you perhaps post a sketch of the system wiring before and after ? could help.

[Jimadine]

Sorry, should have mentioned. The router is connected to the master socket on the ground floor. All of the first floor extensions sockets are unused/dead. What I mean by the network is the wlan. 

[broadstairs]

If all the upstairs house wiring is dead/not used then make sure it is disconnected at the master socket. No point in having unsed wires connected which could pick up interference.

Stuart

[JGO]

If all the upstairs house wiring is dead/not used then make sure it is disconnected at the master socket. No point in having unused wires connected which could pick up interference.

OR modify the frequency response.

A filtered faceplate look after both if connected correctly, so they can still be used as 'phone only extensions.

[Jimadine]

Have gone back to the old microfilter again as Internet radio was dropping out earlier this afternoon. Again I saw a corresponding drop in the SN margin "Down" value to 1/1.5.

[NewtronStar]

Have gone back to the old microfilter again as Internet radio was dropping out earlier this afternoon. Again I saw a corresponding drop in the SN margin "Down" value to 1/1.5.

It could be the SSFP MK3 is increasing your line attenuation but would need to see your attenuation up/down using the MK3 and the microfilter to see the changes if there is any.

[JGO]

It could be the SSFP MK3 is increasing your line attenuation but would need to see your attenuation up/down using the MK3 and the microfilter to see the changes if there is any.

NS The Mk3 increases attenuation at 16-17 MHz -  Jimadine is on ADSL 2MHz max !!

A plot of signal/noise ratio or bit loading vs channel would clarify.

[NewtronStar]

It could be the SSFP MK3 is increasing your line attenuation but would need to see your attenuation up/down using the MK3 and the microfilter to see the changes if there is any.

NS The Mk3 increases attenuation at 16-17 MHz -  Jimadine is on ADSL 2MHz max !!

A plot of signal/noise ratio or bit loading vs channel would clarify.

I have a feeling Jimadine does not have access to Modem stats software that would give us a physical graph to both of your requested plots, so we may have to interpret the line stats the old way 

[Jimadine]

Thanks for all your comments, and apologies for the tardy reply. It sounds like there's no obvious reason why I'm experiencing problems with the faceplate. I will install the RouterStats program at the weekend when I have more time to dedicate to this.

This week I have had the occasional drop out with the conventional filter, but nothing like as bad as with the faceplate. So I guess it's mostly my line at fault.