Service Manual

GSM-204-323
T43/BIB-NIU - E1/T1 mapping
31st Oct 01
Technical Description: Horizon macro outdoor
68P02902W02-A
CONTROLLED INTRODUCTION
Tech. 6–21
T43/BIB-NIU - E1/T1 mapping
Overview of
T43/BIB-NIU
connection
The NIU network interface (E1/T1) links connect to a single T43 (CIM) or BIB
(BIM) board on top of the cabinet by a single backplane connector and cable.
NIU to T43/BIB
mapping and
command ID
One T43 or BIB board is connected to the BCU. Only six network interfaces
are used, three pairs to the master NIU modules, and three pairs to the
redundant NIU modules. Each NIU is identified in the database by an identity
number, from 0 to 3, as shown in the final column of Table 6-5.
NOTE
The redundant NIU modules are only redundant in the
sense of being supplied by a different BPSM, and can
thus continue to operate if the Master BPSM fails. All NIUs
are available for separate use.
Table 6-5 defines the mapping from the T43/BIB connector to NIU boards.
Table 6-5 T43/BIB connector to NIU boards
T43 network
side
connector
37-way D-type
connections
(BIB)
NIU location NIU identity
(MSI)
used in commands
J1 1,20 NIU A0 - Tx1 MSI(NIU) 0
J2 2,21 NIU A0 - Rx1
J7 7,26 NIU A0 - Tx2 MSI(NIU) 0
J8 8,27 NIU A0 - Rx2
J13 13,32 NIU A1 - Tx1 MSI(NIU) 2
J14 14,33 NIU A1 - Rx1
J4 4,23 NIU B0 - Tx1 MSI(NIU) 1
J5 5,24 NIU B0 - Rx1
J10 10,29 NIU B0 - Tx2 MSI(NIU) 1
J11 11,30 NIU B0 - Rx2
J16 16,35 NIU B1 - Tx1 MSI(NIU) 3
J17 17,36 NIU B1 - Rx1