wiring a trimmer phone

[burntwire]

I have an old trimmer phone, its the type that was hard wired into the wall, it has a white, red, green and blue cable, does anyone know how to connect it ?, ive messed around a bit and could get a dialing tone but no ring from it,

TIA

 

[ColJack]

tried "alarms, cctv and telephone" forum? may get more help there..

 

[Taylortwocities]

Its a Trimphone. Probably 700 series.

You'll need to add a resistor and a new type telephone cord.
There's a diagram on the second page here: http://web.onetel.net.uk/~uncletony/phone stuff.htm

By the way, some of the earlier Trimphones only did pulse dialling and may not work with your exchange - i think its all mostly DTMF now....

 

[ColJack]

very useful link...

I especially like the bit for the cell phone...

press *#06# and it comes up with your IMEI number, which is the code to give your provider to get the phone locked if it's lost or stolen..

 

[AndyPRK]

From memory 15 years ago lol

Try this :

white pin 5
red pin 2
green pin 4 (not used)
blue pin 3


Connect the top two first and see if you get a dial tone

 

[Sureitsoff?]

get hold of a new cable for the trimphone like this one


http://cgi.ebay.co.uk/Original-1970...3286.c0.m14&_trkparms=66:2|65:1|39:1|240:1318


cant find one with a new style plug on but I am sure they are available
or fit a plug to the above




and as for how to wire it up


Telephone is wired as follows.

The bell or ringing device should be 4000 ohms resistance. This is achieved by inserting a 3.3K resistor between T4 & T5. It is sometimes preferable to not wire a Trimphone ringer up. This is because it can sometimes upset the rest of your telephone ringers. The Trimphone volume control has an Off position, which is obtainable by removing the case and slackening off the screw on top of the volume control switch itself.

Remove strap T6 - T7
Remove strap T4 - T5
Insert strap T5 - T6
Red wire of line cord to T8
Blue wire of line cord to T6
Insert straps T16 - T17 and T18 - T19
White wire of line cord to T18
Green wire of line cord to T15
Insert a 3.3K resistor between T4 - T5

 

[Taylortwocities]

get hold of a new cable for the trimphone like this one


http://cgi.ebay.co.uk/Original-1970...3286.c0.m14&_trkparms=66:2|65:1|39:1|240:1318

He's already got a line cord - its attached to the phone - so he doesn't need another!

 

[Sureitsoff?]

get hold of a new cable for the trimphone like this one


http://cgi.ebay.co.uk/Original-1970...3286.c0.m14&_trkparms=66:2|65:1|39:1|240:1318

He's already got a line cord - its attached to the phone - so he doesn't need another!

but it is just that, a cord without a plug on the end to plug into a socket
as the poster states it was the type that was hardwired

 

[Chri5]

Weren't all trim phones 'recovered' due to the radiation levels of the luminous dial ??

 

[Taylortwocities]

To Burntwire,

Its been a long time since I did this telephone stuff.

If I remember, the telephones were in parallel and the bells were in series.

Try connecting green and white together and put the line across blue and red.
Let me know if it does the trick, otherwise you may need to take the advice above...

EDIT STOP PRESS.

Look what i found... a Wiring Diagram for the 722 (don't know if thats your model??.
See it at http://www.samhallas.co.uk/repository/n_diagrams/0000/N822.pdf

Looks like you ignore blue.

Connect green & white together, thats one side of the line. Red goes to the other side.

Good luck