Huawei OptiX OSN 3500 Hardware Description ISSUE 1.1 - part 11
Equipment Protection
Items protected
Protection scheme
E1/T1 processing card
1:N (N ≤8) TPS
E3/DS3 processing card
1:N (N ≤3) TPS (2 Groups)
E4/STM-1 processing card
1:N (N ≤3) TPS (2 Groups)
Cross-connect and timing unit
1+1 hot backup protection
SCC unit
1+1 hot backup protection
-48V power interface card
1+1 hot backup protection
3.3V card power supply
1:N centralized hot backup protection
1:8 TPS of E1/T1 board
3 groups of mixed TPS
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
1
2
3
4
5
6
7
8
9
1
1
1
1
1
1
1
1
1
1
2
3
4
5
6
7
8
9
1
1
1
1
1
1
1
1
1
0
1
2
3
4
5
6
7
8
0
1
2
3
4
5
6
7
8
S
S
S
S
X
X
X
X
C
C
C
C
C
C
C
C
C
C
C
C
S
S
S
S
Internal Use
111
Equipment Protection
Fans
The mutual backup of power supplies for the fans
Automatic fan speed adjustment
>Once one fan modules goes faulty, the other two
will operate at their full speed.
>Turns off the fans at low temperature
Abnormality-Specific Board Protection
Check function of application program and data
Over-voltage and under-voltage protection
Board temperature check
Internal Use
112
Network Level Protections
Protections
Types
1+1 MSP
Linear MSP
1:N (1 ≤ N ≤ 14) MSP
2-fiber bidirectional MSP ring
MSP ring
2-fiber unidirectional MSP ring
4-fiber bidirectional MSP ring
Mesh Protection
Intelligent function
SNCP
Dual node interconnection (DNI)
Fiber-Shared Virtual Path Protection
MS-Shared Optical Path Protection
RPR
VP-Ring/VC-Ring Protection
Internal Use
113
Intelligent Features
Service level agreement (SLA)
Topology automatic discovery function
Automatic end-to-end service configuration
Support mesh networking and protection
Traffic engineering
Internal Use
114
Resilient Packet Ring (RPR)
Topology automatic discovery function
Fair algorithm
3 service levels
Internal Use
115
Summary
Product Introduction
Summary
Cabinet, Sub-rack and Boards
Features
Internal Use
116