User's Manual

Lucent Technologies — Proprietary
See notice on first page
401-660-100 Issue 11 August 2000
20-9
AMapping Status Display Page Unit Numbers to
Hardware
The “DS1” logical numbers associated with the DFI units in Figure 20-10—
denoted by an asterisk (*)—are suggested values. The user could associated
other “DS1’ logical numbers with those DFIs, but the DFIs must be physically
located as shown in the Figure 20-10. DFIs are required for CDMA operation.
(Slot 24 of shelves 2 and 3 of the CDMA growth frame is reserved for the DFI.)
The range for CAT logical numbers in a CDMA Cell Site is 0 through 5. CAT 4 and
CAT 5 are always SCT units. (Slot 24 of shelves 0 and 1 of the CDMA growth
frame is reserved for the SCT.)
On the status display pages, SCT and CAT units are lumped together under the
“CAT” heading. A
c
displayed next to a CAT logical number indicates a CAT board,
and an
s
displayed next to a CAT logical number indicates a SCT board.
When equipping SCT and CAT units using RC/V, SCT units are configured for
GPS timing, while CAT units are configured for no GPS timing. RC/V is not used to
configure a SCT for TDM bus timing; that configuration is accomplished manually
via a TDM enable switch on the wiring side (rear side) of the backplane associated
with the installed SCT. The active (on-line) SCT provides CDMA reference signals
for the entire CDMA growth frame in which it resides.
Upon comparing the two figures, you will notice a difference in TDM1 cabling
between the AMPS/TDMA RCF2 and the CDMA RCF2. The TDM1 cabling in the
AMPS/TDMA RCF2 starts at the bottom of the frame, whereas the TDM1 cabling
in the CDMA RCF2 starts at the top.
NOTE:
T
DM buses are always installed "red stripe up."