Alcatel-Lucent 9500 MXC User Manual page 853

3DB 23063 ADAA - Rev 004 July 2007
Ring with Point-to-Point Overlay
Figure E-6.
Node A
Node G
32xE1 links:
64xE1 links:
Node F
Node E
Point-to-point
E1 circuits
For nodes, which carry ring and overlay traffic, bus capacity rules may be stated
as:
Ring Type
NxE1
NxDS1
Where:
• P = Total number of point-to-point circuits passed through the node, and
dropped at the node. (This is the same as for linear nodes).
• R = The ring capacity (total number of ring circuits).
• d = The drop-insert circuit capacity (number of circuits dropped and inserted
from/to the ring).
This is illustrated in Figure E-7 for a 48xE1 ring with a 16xE1 point-to-point
overlay in both directions (total 64xE1 over-air capacity in both directions).
32xE1 link
Node B
Protected ring
Point-to-point
32xE1 ring-protected traffic
32xE1 pt-to-pt traffic
Node D
Rule Based on Number
of E1 or DS1 Circuits
P + R + d/2 100
P + R + d/2 128
9500 MXC User Manual
Node C
64xE1 link
Rule Based on Number
of E1 or DS1 Timeslots
2P + 2R + d 200
2P + 2R + d 256
Vol. VI-E-7