User Manual

AS4000 Release3 and Release 4 Central
Terminal Installation and Commissioning
DLP-006
605-0000-432
Issue 1.3a Date 18th October 1999
Page 2 of 4
Feed the cables through the top of the rack and down the front of the rack.
Identify and label each cable at both ends as well as the DDF positions.
Terminate all cables with a BNC connector.
Connect the 2Mbit/s ports on the DDF to the 2Mbit/s I/P (Top) BNC and 2Mbit/s O/P
(Bottom) BNC connectors on Shelf Interface Connections located at the right hand
side of each Modem Shelf. See Figure 15.
Modem Shelf
2 Mbit
/s
Cables
Sitespan
Figure 19. Rack Cabling
Ensure that the respective 2Mbit/s ports have been configured on the DDF in the
exchange.
Ensure that the 2Mbit/s grounding options are set. JP5, JP6 and JP7 to be fitted with
links for 75Ω.unbalanced. The links are not fitted for 120Ω balanced operation.
Tie in cables as necessary using suitable cable ties, trim, leaving no sharp edges.