Airspan AS4000, Installation Manual

Page: 47 / 193

Installation
43
d. 3 CTUs are supported. Each CTU supports four CT modem shelves. Each CTU
may be cabled for four 120

E1s or four 75

E1s. and are placed in slots 4, 5,
and 6
e. XTUs (CAS, Data, ISDN, V5.1, V5.2 and PTU) are supported. Each XTU may be
cabled for eight 120

E1s. These can be placed in slots 5-14.(It is preferable to
build from slot 7 leaving 5 and 6 available for additional CTUs if required)
f. CU cards may go in any unused slot. (slots 15& 16 are preferred as they have no
E1 connections.
g. RTU card can go in slot 9 or 17 for card redundancy using a spare TU8 card (not
PTU), the redundant card is selected via Sitespan.
Note If installing a PTU the D-type on the backplane must be fitted with a D-Type to RJ45
adapter. The RJ45 to DB25 connector currently must be connected onto the lower of the two
25-way AC connectors (even though the activity lights work if connected to the top).
The preferred E1 options are shown below
Card Insertion T1 Systems
Insert the cards into the shelves, recording the serial numbers and revision status in the test
results form. The actual cards provided will depend upon the customer configuration.
a) The load sharing PSUs go in slots 1&2.
b) The Shelf Controller goes in slot 3.