Alcatel-Lucent 9500 MXC User Manual page 848

Linear Node Applications
Vol. VI-E-2
For a linear network node the number of E1, DS1 or STM1 circuits required on
the on the bus equals the number of circuits passed through and dropped.
Linear Node Rule
Bus capacity used = Total of circuits passed through the node, and dropped at the node.
For an aggregation (back-haul) node this equates to the capacity of the over-air
'pipe' used back towards the network core. Refer to Figure E-1 and the example
shown in Figure E-2 of a 64xE1 back-haul link, which is well within the 100xE1
maximum count for an E1 bus configuration.
Aggregation Node
Figure E-1.
P + d circuits
RAC
Backplane capacity used = P + d
Aggregation Node Example
Figure E-2.
64xE1 RAC 30
100xE1 Bus
DAC 16x
For a simple aggregation node using a single RAC 30V3 towards the network
core (75xE1, 100xDS1 or STM1/OC3 maximums), bus capacity issues will not
arise.
P circuits passed
d circuits dropped
DAC
INU/INUe
d
INUe
RAC 30
Capacity
RAC 30
RAC 30
8xE1
P circuits
RAC
32xE1
16xE1
8xE1
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