Kitz Forum

Broadband Related => Telephony Wiring + Equipment => Topic started by: burakkucat on May 16, 2014, 12:49:48 AM

Title: Connecting a BT80B-RF3
Post by: burakkucat on May 16, 2014, 12:49:48 AM

I had cause to check the terminals of an RF3 and as they were poorly marked, I thought it would be useful to document them here.

Looking at the photograph, below, the screw terminals in the top RH corner are A-wire, earth & B-wire (reading from top to bottom) and the IDCs in the bottom LH corner are B-wire, earth & A-wire (again reading from top to bottom).

At the same time, I decided to check the resistance of the common-mode chokes. Both were found to be 0.8 Ohm, when measured using my ex-Beattie Fluke 8022B DMM.

Title: Re: Connecting a BT80B-RF3
Post by: NewtronStar on May 16, 2014, 01:36:32 AM

many thanks BC, and I did a google search for any wireing diagram before installing and found none so just used my uncommon sence, so I hope your post will help other kitizens avoid the same mistake as me  ;)

Title: Re: Connecting a BT80B-RF3
Post by: roseway on May 16, 2014, 07:20:38 AM

I've stickied this as a useful reference.

Title: Re: Connecting a BT80B-RF3
Post by: Bestgear on November 13, 2017, 08:00:26 PM

Hi...

Are these still used with FTTC as they are with ADSL?

From recent router PCB layouts examined, most seem to have much improved filtering.


David

Title: Re: Connecting a BT80B-RF3
Post by: ejs on November 13, 2017, 08:20:57 PM

Which modem/routers are you referring to? I've only heard about some Zyxel devices containing an interference filter on the DSL input.

Title: Re: Connecting a BT80B-RF3
Post by: 4candles on November 13, 2017, 10:14:41 PM

Isn't it the SSFPs which have the filtering, rather than routers?