UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Two DSL filters, two 706 phones, bell tinkle

Oldcodger · 22nd Jul 2019, 10:04 pm

Ricardo- that's my preferred method, when I can site the router close to the BT master, and use WiFi in the house. In days pre WiFi, I would route the incoming line from 2 & 5 in the BT master to a socket in my den where the filter lived ( via a spare pair in my internal wiring). ADSL out to PC,and phone side connected via a master to the rest of the house wiring.
As a filter- I considered it as a black box. ADSL + AUDIO In at one end and ADSL out /Audio out on the other two.
As said n the phones, to reduce REN there is a mod which introduces a resistor in series with the bell. But there is a little mentioned addition to sockets. it's usually found on older BT systems, with a separate 50v DC feed. it's a socket with a ringing generator built in . Designed for adding an extension bell to old BT systems.

22nd Jul 2019, 10:04 pm	#19
Oldcodger Nonode Join Date: Oct 2014 Location: West Midlands, UK. Posts: 2,181	Re: Two DSL filters, two 706 phones, bell tinkle Ricardo- that's my preferred method, when I can site the router close to the BT master, and use WiFi in the house. In days pre WiFi, I would route the incoming line from 2 & 5 in the BT master to a socket in my den where the filter lived ( via a spare pair in my internal wiring). ADSL out to PC,and phone side connected via a master to the rest of the house wiring. As a filter- I considered it as a black box. ADSL + AUDIO In at one end and ADSL out /Audio out on the other two. As said n the phones, to reduce REN there is a mod which introduces a resistor in series with the bell. But there is a little mentioned addition to sockets. it's usually found on older BT systems, with a separate 50v DC feed. it's a socket with a ringing generator built in . Designed for adding an extension bell to old BT systems.