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 6450-2:1993
New product
BS 6450-2:1993 Private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators. Specification for private branch exchanges with terminating stations treated as an entirety
standard by BSI Group, 02/15/1993
More info
Full Description
Requirements for exchanges connected at the users' premises to analogue interfaces of a PSTN for terminating stations and cabling treated with the private branch exchange as an entirety, or for other analogue interfaces of the PSTN.Cross References:
BS 4669
BS 6301
BS 6305
BS 6312
BS 6317
BS 6450:Part 1
BS 6450:Section 5.1
BS 7266:Part 1
CCITT Recommendation B.12
CCITT Recommendation G.162
CCITT Recommendation O.71
CCITT Recommendation P.51
CCITT Recommendation P.53
CCITT Recommendation P.64
CCITT Recommendation P.76
BT Specification T4545
BT Relay sheet 19/5
Telecommunications Apparatus (Marking