How To tell the difference between Telephone Junction boxes, BT77, BT78, BT84, BT89, BT80

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Hi, this 'How To' videos explains the differences between all the Block Terminal range of telephone junction boxes. I show an example of the BT89A, BT80A, BT77A, BT77B, BT78A and
the BT84A.
To visit my ebay shop please click this link
http://www.mrtelephone.co.uk
Many thanks Vince




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Tags:
Telephone (Invention)
Junction Box
block terminal
phone connection box
telephone junction box
BT89A
BT80A
BT77A
BT77B
BT78A
BT84A
BT point
BT extension
British telecom
bt group
BT junction box
virginmedia
ntl
cable telephone