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Old 18th Mar 2017, 9:28 am   #25
JohnBHanson
Heptode
 
Join Date: Aug 2009
Location: Worthing, Sussex, UK.
Posts: 661
Default Re: GPO Jack unit 1B

Connect T4 on 713 to T20 on Jack Unit, Connect T5 on 713 to T19 on Jack Unit - remove link T19 to T20. This gives you the off hook switch.

Now to connect the handset on the 713...
Connect T9 on 713 to T10 on Jack Unit
Connect T8 on 713 to T13 on Jack Unit
Connect T1 on 713 to T5 on Jack Unit
Connect T7 on 713 to T1 on Jack Unit

For bell tinkle supression - only necessary if you fit a dial
T2 on 713 connects to T7 on 713 and blue wire from line cord

Connect line cord as follows:-
Line cord - connect White to T18, Red to T9
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