
3.3.2 Signal Flow and Timeslot Allocation
To configure services on the non-protection ring, you need to plan the traffic direction and
timeslot allocation for the services on the non-protection ring.
shows the signal flow and timeslot allocation. In this example, five E1 services are
added to or dropped from NE1 and NE3, and they pass through NE2.
Figure 3-4
Signal flow and timeslot allocation of the services on the non-protection ring
VC4-1:1-5(VC12)
NE1
NE2
NE3
线路板
Pass-through service
VC4-1:1-5(VC12)
3-SP3D
1-SL1D-1
NE4
Traffic
direction
Line board
Two-fiber bidirectional
non-protection ring
VC4-1:1-5(VC12)
5
×
E1
5
×
E1
1-SL1D-1
1-SL1D-2
3-SP3D
1-SL1D-2
Tributary board
Line board
3-SP3D
Tributary board
1-SL1D-1
NE1:
Line board
1-SL1D-2
Line board
1-SL1D-1
NE2:
Line board
3-SP3D
Tributary board
1-SL1D-2
NE3:
3.3.3 Per-NE Configuration Process
The configuration of the services on the non-protection ring is not related to the configuration
of the protection subnet. To configure the services on the non-protection ring, configure the SDH
services from the tributary board to the line board on the source and sink NEs and the pass-
through services on the intermediate NEs if the protection subnet is already created.
Prerequisite
l
The physical topology of the network must be created.
l
The NEs, boards, and fibers must be created on the U2000.
l
The created protection subnet must be consistent with the actual network topology. For
details about how to create the protection subnet, see
2.6.2 Configuring a Non-Protection
l
You must be familiar with the information about
3.3.2 Signal Flow and Timeslot
3 Configuring SDH Services
OptiX OSN 550 Multi-Service CPE Optical Transmission
System
Configuration Guide
3-10
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 02 (2011-06-30)