Cart 0 Product Products (empty)
No products
To be determined Shipping
$0.00 Total
Product successfully added to your shopping cart
Quantity
Total
There are 0 items in your cart. There is 1 item in your cart.
Total products
Total shipping To be determined
Total
New Sale! 
View larger
View larger BS 6789-1:1984
New product
BS 6789-1:1984 Apparatus with one or more particular functions for connection to public switched telephone networks run by certain public telecommunications operators. Specification for general requirements
standard by BSI Group, 02/29/1984
More info
Full Description
Requirements for added facilities on telephones and data modems for connection as subscribers' apparatus to exclusive lines of the PSTN. Lists the facilities specified in the other parts of the standard and requires the supplier to state which are relevant to an apparatus submitted for approval.Cross References:
BS 6301
BS 6305
BS 6317
BS 6320
BS 6789:Part 2
BS 6789:Part 3
BS 6789:Part 4
BS 6789:Part 5
BS 6789:Part 6
BS 6789:Part 7
British Telecommunications Act 1981