Huawei OptiX BWS 1600G. Technical Description - part 6
3 System Configuration
OM
OA
OM & OD
OA
M40
OA-C
（C-EVEN）
M40
（C-ODD）
M40
OA-C
OA-L
M40
（L-ODD）
（C-EVEN）
ITL-C
D40
D40
（C-ODD）
OA-L
（L-ODD）
OA-C
D40
（C-EVEN）
D40
OA-C
（C-EVEN）
OD
Type II system
Type II system
C+L 800G structure of OM,
C 800G structure of OM, OD
and OA
OD and OA
Figure 3-3 Structure of OM, OD, OA of the type II system
Type III, IV, V and VI Systems
The structure of the OM, OD, and OA of the type III, V, and VI systems is similar to
that of the type I system, operating at C-EVEN band only. The type IV system
operates at L-ODD band only.
The structure of the OM, OD and OA of the type III, IV, V, and VI systems is shown
in Figure 3-4.
OA
OA
OM
OM
M40
M40
OA-C
OA-L
（C-EVEN）
（L-ODD）
D40
D40
OA-C
OA-L
（C-EVEN）
（L-ODD）
OD
OD
The structure of OM, OD, OA of
The structure of OM, OD, OA of
the type III and V systems
the type IV system
OA
OM
M40
HBA
（C-EVEN）
D40
OAU
（C-EVEN）
OD
The structure of OM, OD, OA of
the type VI system
Figure 3-4 Structure of OM, OD, OA of the type III, IV, V and VI systems
3-7
3 System Configuration
3.1.3 Typical Configuration
Type I System
In full configuration, an open OTM of the type I system needs six cabinets and 17
subracks, while an integrated OTM needs two cabinets and six subracks.
The configuration of OTM is based on the system capacity and upgrading mode.
Typically, the type I system adopts the smooth expansion by adding the C-EVEN
module, C-ODD module, L-EVEN module, and then L-ODD module. Each
module has a maximum capacity of 400 Gbit/s (40 channels) and smooth expansion
from 1 channel to 40 channels can be enabled within each module.
Figure 3-5 shows the typical C-band 800 Gbit/s OTM configuration and Figure 3-6
shows the typical L-band 800 Gbit/s OTM configuration.
Power
Power
Power
O
O
O
O
O
O
S
O
O
O
O
O
O
M
O
O
O
O
S
O
O
O
O
D
O
O
O
O
S
T
T
T
T
T
T
C
T
T
T
T
T
T
4
T
T
T
T
C
T
T
T
T
4
T
T
T
T
C
U
U
U
U
U
U
E
U
U
U
U
U
U
0
U
U
U
U
E
U
U
U
U
0
U
U
U
U
E
(CO)
(CO)
M
O
O
O
O
S
O
O
O
O
D
O
O
O
O
O
O
S
O
O
O
O
O
O
O
O
O
O
O
O
S
O
O
O
O
O
O
4
T
T
T
T
C
T
T
T
T
4
T
T
T
T
T
T
C
T
T
T
T
T
T
T
T
T
T
T
T
C
T
T
T
T
T
T
0
U
U
U
U
E
U
U
U
U
0
U
U
U
U
U
U
E
U
U
U
U
U
U
U
U
U
U
U
U
E
U
U
U
U
U
U
(CE)
(CE)
O
M
I
T
S
F
R
O
O
O
O
O
O
O
S
O
O
O
O
O
O
O
O
O
O
O
O
S
O
O
O
O
O
O
A
C
T
C
C
I
P
A
T
T
T
T
T
T
C
T
T
T
T
T
T
T
T
T
T
T
T
C
T
T
T
T
T
T
U
A
L
1
C
U
C
U
U
U
U
U
U
U
E
U
U
U
U
U
U
U
U
U
U
U
U
E
U
U
U
U
U
U
(C)
(C)
(C)
(C)
DCM
HUB/1
HUB/1
C-EVEN OTU
C-ODD OTU
CE: C-band EVEN
CO: C-band ODD
C: C-band
Note: All plug-in OTUs belong to C-band. HUB/1 indicates one 8-port HUB is configured in the HUB frame
Figure 3-5 Configuration of the C-band 800 Gbit/s OTM (type I system)
3-8
3 System Configuration
Power
Power
Power
O
O
O
O
O
O
S
O
O
O
O
O
O
M
O
O
O
O
S
O
O
O
O
D
T
T
T
T
T
T
C
T
T
T
T
T
T
4
T
T
T
T
C
T
T
T
T
4
U
U
U
U
U
U
E
U
U
U
U
U
U
0
U
U
U
U
E
U
U
U
U
0
(LO)
(LO)
M
O
O
O
O
S
O
O
O
O
D
O
O
O
O
O
O
S
O
O
O
O
O
O
O
O
O
O
O
O
S
O
O
O
O
O
O
4
T
T
T
T
C
T
T
T
T
4
T
T
T
T
T
T
C
T
T
T
T
T
T
T
T
T
T
T
T
C
T
T
T
T
T
T
0
U
U
U
U
E
U
U
U
U
0
U
U
U
U
U
U
E
U
U
U
U
U
U
U
U
U
U
U
U
E
U
U
U
U
U
U
(LE)
(LE)
O
M
O
O
S
O
O
I
R
O
O
O
O
O
O
O
S
O
O
O
O
O
O
O
O
O
O
O
O
S
O
O
O
O
O
O
A
C
T
T
C
T
T
T
P
A
T
T
T
T
T
T
C
T
T
T
T
T
T
T
T
T
T
T
T
C
T
T
T
T
T
T
U
A
U
U
E
U
U
L
A
U
U
U
U
U
U
U
E
U
U
U
U
U
U
U
U
U
U
U
U
E
U
U
U
U
U
U
(L)
(L)
(L)
(L)
DCM
HUB/2
HUB/1
L-EVEN OTU
L-ODD OTU
LE: L-band EVEN
LO: L-band ODD
L: L-band
Note: All plug-in OTUs belong to L-band. HUB/1 indicates one 8-port HUB is configured in the HUB frame,
and HUB/2 indicates two 8-port HUBs are configured in the HUB frame.
Figure 3-6 Configuration of the L-band 800 Gbit/s OTM (type I system)
Note
If the system provides the line protection function, the OLP01 board needs to be
configured. In this case, the Raman amplifier unit cannot be used.
If OTUs need centralised power protection, a PBU board must be configured in slot
1 of the subrack holding OTUs and all OTUs are placed from left to right.
Type II System
The type II system supports C+L 800G and C 800G.
The configuration of C+L OTM can be upgraded from the initial C-band 400G to
C+L 800G. See Figure 3-7.
3-9
3 System Configuration
Power
Power
Power
O
O
O
O
O
O
S
O
O
O
O
O
O
O
O
O
O
O
O
S
O
O
O
O
O
O
O
O
O
O
O
O
S
O
O
O
O
O
O
T
T
T
T
T
T
C
T
T
T
T
T
T
T
T
T
T
T
T
C
T
T
T
T
T
T
T
T
T
T
T
T
C
T
T
T
T
T
T
U
U
U
U
U
U
E
U
U
U
U
U
U
U
U
U
U
U
U
E
U
U
U
U
U
U
U
U
U
U
U
U
E
U
U
U
U
U
U
M
O
O
O
O
S
O
O
O
O
D
O
O
O
O
O
O
S
O
O
O
O
O
O
O
O
O
O
O
O
S
O
O
O
O
O
O
4
T
T
T
T
C
T
T
T
T
4
T
T
T
T
T
T
C
T
T
T
T
T
T
T
T
T
T
T
T
C
T
T
T
T
T
T
0
U
U
U
U
E
U
U
U
U
0
U
U
U
U
U
U
E
U
U
U
U
U
U
U
U
U
U
U
U
E
U
U
U
U
U
U
(CE)
(CE)
O
M
T
S
F
R
O
O
O
O
O
O
O
S
O
O
O
O
O
O
M
O
M
S
R
O
D
A
C
C
C
I
P
A
T
T
T
T
T
T
C
T
T
T
T
T
T
4
A
C
C
P
A
4
U
A
1
C
U
C
U
U
U
U
U
U
U
E
U
U
U
U
U
U
0
U
A
E
A
U
0
(C)
(C)
(C)
(LO)
(L)
(L)
(L)
(LO)
DCM
HUB/1
HUB/1
C-EVEN
L-ODD
CE: C-band EVEN
LO: L-band ODD
L: L-band
C: C-band
Note: OTUs are either in C-EVEN or L-ODD band. HUB/1 indicates one 8-port HUB is configured in the
HUB frame.
Figure 3-7 Configuration of the C+L 800 Gbit/s OTM (type II system)
If OTUs need centralised power protection, a PBU board must be installed in slot 1
of the subrack holding OTUs.
C band OTM supports service expansion form 1 to 80 channels. The typical
configuration of the C band 800G OTM is shown in Figure 3-8.
3-10
3 System Configuration
Power
Power
Power
O
O
O
O
O
O
S
O
O
O
O
O
O
M
O
O
O
O
S
O
O
O
O
D
O
O
O
O
S
T
T
T
T
T
T
C
T
T
T
T
T
T
4
T
T
T
T
C
T
T
T
T
4
T
T
T
T
C
U
U
U
U
U
U
E
U
U
U
U
U
U
0
U
U
U
U
E
U
U
U
U
0
U
U
U
U
E
(CO)
(CO)
M
O
O
O
O
S
O
O
O
O
D
O
O
O
O
O
O
S
O
O
O
O
O
O
O
O
O
O
O
O
S
O
O
O
O
O
O
4
T
T
T
T
C
T
T
T
T
4
T
T
T
T
T
T
C
T
T
T
T
T
T
T
T
T
T
T
T
C
T
T
T
T
T
T
0
U
U
U
U
E
U
U
U
U
0
U
U
U
U
U
U
E
U
U
U
U
U
U
U
U
U
U
U
U
E
U
U
U
U
U
U
(CE)
(CE)
O
M
I
T
S
F
R
O
O
O
O
O
O
O
S
O
O
O
O
O
O
O
O
O
O
O
O
S
O
O
O
O
O
O
A
C
T
C
C
I
P
A
T
T
T
T
T
T
C
T
T
T
T
T
T
T
T
T
T
T
T
C
T
T
T
T
T
T
U
A
L
1
C
U
C
U
U
U
U
U
U
U
E
U
U
U
U
U
U
U
U
U
U
U
U
E
U
U
U
U
U
U
(C)
(C)
(C)
(C)
DCM
HUB/1
HUB/1
C-EVEN OTU
C-ODD OTU
CE: C-band EVEN
CO: C-band ODD
C: C-band
Figure 3-8 Configuration of the C band 800 Gbit/s OTM (type II system)
Type III, IV and V Systems
Figure 3-9 shows the configuration of the OTM of the type III system (C-EVEN
400 Gbit/s).
The configuration of the L-ODD 400G OTM of the type IV system is similar to that
of the type III system, except the boards are in L-ODD band.
The configuration of the C-EVEN OTM of the type V system is similar to that of
the type III system, but the OTU it uses is no more than 2.5 Gbit/s and no DCM is
needed.
If the system provides the line protection function, the OLP01 board needs to be
configured. In this case, the Raman amplifier unit cannot be used.
If OTUs need centralised power protection, a PBU board must be installed in slot 1
of the subrack holding OTUs.
3-11
3 System Configuration
Power
Power
O
O
O
O
O
O
S
O
O
O
O
O
O
T
T
T
T
T
T
C
T
T
T
T
T
T
U
U
U
U
U
U
E
U
U
U
U
U
U
M
O
O
O
O
S
O
O
O
O
D
O
O
O
O
O
O
S
O
O
4
T
T
T
T
C
T
T
T
T
4
T
T
T
T
T
T
C
T
T
0
U
U
U
U
E
U
U
U
U
0
U
U
U
U
U
U
E
U
U
O
M
F
T
S
O
O
O
O
O
O
O
S
O
O
O
O
O
O
A
C
I
C
C
A
T
T
T
T
T
T
C
T
T
T
T
T
T
U
A
U
1
C
U
U
U
U
U
U
U
E
U
U
U
U
U
U
(C)
(C)
(C)
DCM
HUB/1
Note: All OTUs belong to C-EVEN band. The "(C)" indicates the C band.
Figure 3-9 Configuration of the 400 Gbit/s OTM (type III system)
Type VI System
Being an LHP, the type VI system provides 10-channel and 40-channel application,
which has similar configuration, except the number of OTUs. Figure 3-10 shows
the configuration of the 10-channel system.
3-12
3 System Configuration
Power
P
O
O
O
S
B
T
T
T
C
U
U
U
U
E
P
M
O
O
O
S
O
O
O
O
D
B
4
T
T
T
C
T
T
T
T
4
U
0
U
U
U
E
U
U
U
U
0
H
M
F
T
S
O
O
B
C
I
C
C
A
A
A
A
U
1
C
U
U
(C)
(C)
(C)
DCM
HUB/1
Note: All OTUs belong to C-EVEN band. The "(C)" indicates the C band.
Figure 3-10 Configuration of the 10-channel OTM (type VI system)
The OTM of the type VI system is configured with a high booster amplifier (HBA)
at the transmit end and two optical amplifier units (OAU) at the receive end.
3.1.4 Configuration Principle
Configuration of M40, V40 and VA4
In an open system, if the output power of the OTU boards is not adjustable,
the number of optical channels is more than 16, and there is a need for power
equalization, use the V40. If the number of optical channels is less than 16,
and there is a need for power equalization, install one M40 along with several
VA4s.
In an integrated system, if there is a need for power equalization, install the
V40.
In a hybrid system, if the output power of the OTU boards is not adjustable,
the number of optical channels is more than 16, and there is a need for power
equalization, the M40 is replaced by a V40 of corresponding band. If the
number of optical channels is less than 16, and there is a need for power
equalization, install one M40 along with several VA4s.
If there is no need for power equalization, install the M40.
3-13
3 System Configuration
Configuration of OTU
When installing the OTU, first configure the C-EVEN module, and then
C-ODD, L-EVEN and L-ODD modules, from the bottom subrack to top
subrack and left to right in the subrack.
Configuration of SCC/SCE
Generally, the SCC board is required in the subrack with the SC1, SC2, TC1
or TC2 installed. The SCE is installed in other subracks.
Configuration of Amplifier Unit
Amplifier units of the transmit and receive ends are installed in the leftmost
slots or rightmost slots.
Configuration of Supervisory Channel and Timing Transporting Unit
If clock transmission is required, use the TC1 or TC2. Otherwise use the SC1
or SC2. Note that the TC1 or TC2 cannot be used with the SC1 or SC2.
If clock protection is required, install the TC1 or TC2 in both slot 6 and slot 8.
Otherwise slot 6 is preferential.
Configuration of Protection Group
In 1:8 OTU protection, all the boards in a protection group, including the
working OTU boards, the protection OTU and the OCP, should be installed in
one subrack. One subrack can accommodate one protection group only.
The OLP01 is used for the purpose of optical line protection. It is not used
with the Raman amplifier unit.
When you configure the inter-subrack 1+1 protection, the working OTU, the
protection OTU and the OLP03 can be configured in different subracks. The
OLP03 supports protection against subrack power failure. In this case, the
protection OTU and the OLP03 should not be in the same subrack.
3-14
3 System Configuration
3.2 OLA
3.2.1 Signal Flow
The OLA amplifies bidirectional optical signals and compensates for the fiber link
attenuation to extend the transmission distance without regeneration.
The OLA consists of:
Optical amplifier (OA)
Optical supervisory channel unit or supervisory channel and timing
transporting unit (OSC/OTC)
Fibre interface unit (FIU)
Dispersion compensation module (DCM)
System control & communication unit (SCC)
The OLA flow signal is shown in Figure 3-11.
DCM
C-band
OA-C
L-band
OA-L
DCM
FIU
OSC/OTC
FIU
DCM
C-band
OA-C
L-band
OA-L
DCM
Figure 3-11 OLA signal flow
At the receive end, the FIU separates the line optical signals into service signals and
supervisory signal.
Then all the service signals are sent to the OA, where these signals are amplified
according to C-band and L-band. Meanwhile, the DCM implements the dispersion
compensation to the service signals. Optical supervisory signals are sent to the OSC
(OTC) for overhead processing (overhead and network clock).
At the transmit end, the amplified service signals and supervisory signal are sent,
through the FIU, to the optical fibre for transmission.
3-15
3 System Configuration
3.2.2 Structure
For the OLA of the six system types, each functional unit and the board(s)
contained are shown in Table 3-3.
For the functions of these boards, see Chapter 2 "Product Description".
Table 3-3 Functional unit and the boards contained (five system types)
Unit
OA
OSC/OTC
FIU
System
I
OAU, OBU, OPU
SC2, TC2
FIU-01, FIU-02
II
OAU, OBU, OPU
SC2, TC2
FIU-01, FIU-02
II (C 800G)
OAU, OBU, OPU
SC2, TC2
FIU-03
III
OAU, OBU, OPU
SC2, TC2
FIU-03
IV
OAU, OBU, OPU
SC2, TC2
FIU-04
V
OAU, OBU, OPU
SC2, TC2
FIU-03
The OLA of the type I system adopts the optical amplifier of C-band and
L-band for amplifying service signals of C-band and L-band.
The C+L 800G OLA of the type II system adopts the optical amplifier of
C-band and L-band for amplifying service signals of C-band and L-band .
The C band 800G OLA adopts the optical amplifier of C-band for amplifying
service signals of C-band.
The OLA of the type III and V system adopts the optical amplifier of C-band
for amplifying service signals of C-band.
The OLA of the type IV system adopts the optical amplifier of L-band for
amplifying service signals of L-band.
The type VI system is a long hop system with no need for the OLA.
3-16
3 System Configuration
3.2.3 Typical Configuration
In full configuration, the OLA only needs one cabinet. In engineering configuration,
whether to use OAU, OBU, OPU or the combination of them is dependent on the
actual line loss and power budget.
Type I System
The OLA equipment achieves the bidirectional main path optical signal
amplification in C-band and L-band. In each direction, two optical amplifiers are
needed, which amplify optical signals in C-band and L-band respectively. The
configuration is shown in Figure 3-12.
Note
In DWDM equipment, the definition about west and east is:
1. In a chain network, left is west and right is east.
2. In a ring network, the counter-clockwise (outer ring) is the primary ring, in the
direction from west to east.
west
east
west
east
west
east
east
west
west
east
3-17