User's Manual

Table Of Contents
Printed Documentation
44
c) All other slot positions are configurable via Sitespan.
d) 3 CTUs are supported. Each CTU supports four CT modem shelves. Each CTU may
be cabled for eight 120 T1s. and are placed in slots 7, 8, and 9
e) XTUs (GR303, 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 8-14.(It is preferable
to build from slot 10 leaving 8 and 9 available for additional CTUs if required) and in
slots 4,5 and 6.
f) CU cards may go in any unused slot. (slots 15& 16 are preferred as they have no T1
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 card positions are shown in the table below.