An HSNQ2 board receives mixed signals of STM-16/STM-64/OTU2/OTU2e
services with the total bandwidth not higher than 40 Gbit/s from
the backplane, encapsulates them into ODU0/ODU1/ODU2/ODUflex units,
and transmits them out through optical ports.
An HSNQ2 board provides different functions and features, depending
on the received signals. Table 1, Table 2, and Table 3 list the
functions and features supported by an HSNQ2 board.
Table 1 Functions and features supported by an HSNQ2 board
| Function and Feature | Description |
|---|
| Cross-connect mode | OTN mode: 40 Gbit/s access capacity at maximum. SDH mode: 40 Gbit/s access capacity at maximum. The access capacity
varies with the slots. For details, see Slot Capacity for HSNQ2. SDH+OTN hybrid mode: 20 Gbit/s SDH + 20 Gbit/s OTN at maximum. The
access capacity varies with the slots. For details, see Slot
Capacity for HSNQ2. |
| Basic functions | Receives and processes four-channel OTU2/OTU2e signals. - OTN mode: Multiplexes 32-channel ODU0, eight-channel ODUflex,
16-channel ODU1, or four-channel ODU2 signals into four-channel
ODU2 services.
- SDH mode: Multiplexes signals from 16 STM-16 or four STM-64 virtual
optical ports into four-channel ODU2 services.
SDH+OTN hybrid mode: Multiplexes signals from eight STM-16 or two STM-64 virtual optical
ports into four-channel ODU2 services. Multiplexes 16-channel ODU0, four-channel ODUflex, eight-channel
ODU1, or two-channel ODU2 signals into four-channel ODU2 services.
NOTICE:Licenses control the board capacity. One license allows a 10 Gbit/s
capacity. Up to four licenses can be loaded to an HSNQ2 board. That
is, an HSNQ2 board supports a maximum of 40 Gbit/s capacity. The capacity of an HSNQ2 board is the sum of the OTN service
capacity and SDH virtual port capacity. - OTN service capacity: ODU2 (10 Gbit/s), ODU1 (2.5 Gbit/s), ODU0
(1.25 Gbit/s), and ODUflex-n (nx1.25 Gbit/s).
- SDH virtual port capacity: STM-16 (2.5 Gbit/s) and STM-64 (10
Gbit/s).
|
| Cross-connect capabilities | Each 10 Gbit/s line independently receives and transmits
ODU2/ODU1/ODU0/ODUflex signals. Supports hybrid access of ODU0, ODU1, and ODUflex signals. |
| Optical module | |
| Synchronization | The SDH virtual optical ports (STM-16/STM-64) support physical
clocks. Supports physical-layer clock synchronization when the board
receives ODU0/ODU1/ODUflex signals cross-connected from the
backplane. |
| FEC coding | Supports FEC and EFEC. |
| ASON | Supported |
| Alarm and performance monitoring | Monitors and reports performance events and alarms in the SM, PM,
and TCM sections of OTU2 services on the WDM side.- Monitors and reports performance events in SM (ODU2/ODU1), PM
(ODU2/ODU1/ODU0/ODUflex), and TCM (ODU2/ODU1/ODU0/ODUflex)
sections.
- Monitors and reports alarms in SM (ODU2/ODU1), PM
(ODU2/ODU1/ODU0/ODUflex), and TCM (ODU2/ODU1/ODU0/ODUflex)
sections.
- Monitors and reports FEC performance events.
|
| Maintenance | - Supports inloops and outloops at optical ports.
- Supports ODU0/ODU1/ODUflex loopbacks.
- Supports warm resets and cold resets. Warm resets do not affect
services.
- Supports board manufacturer information querying.
- Supports in-service loading of the FPGA.
- Supports smooth upgrades of board software.
- Monitors and reports voltage performance.
- Supports PRBS for the ODU2 channel on the WDM side.
|
Table 2 SDH functions and features supported by an HSNQ2 board
| Function and Feature | Description |
|---|
| Basic functions | SDH mode: Multiplexes signals from 16 STM-16 or four STM-64 virtual
optical ports into four-channel ODU2 services. SDH+OTN hybrid mode: Multiplexes signals from eight STM-16 or two STM-64 virtual optical
ports into four-channel ODU2 services. Multiplexes 16-channel ODU0, four-channel ODUflex, eight-channel
ODU1, or two-channel ODU2 signals into four-channel ODU2 services.
|
| Limitations on virtual SDH ports | - Supports a maximum of 16 STM-16 ports and four STM-64 ports, with a
total bandwidth not higher than 40 Gbit/s.
Virtual ports are classified into four groups: ports 51-54, 55-58,
59-62, and 63-66. Ports in one group must carry services of the
same granularity. That is, if STM-16 services are configured for a
port, the other ports in the group cannot carry STM-64 services. STM-64 services can be configured only on ports 51, 55, 59, and 64.
If these ports have been occupied by STM-16 services, no STM-64
service can be configured. - Ports in the same group are preferentially used to carry STM-16
services. For example, if three ports are required by STM-16
services, ports 51 to 53 are used; if seven ports are required,
ports 51 to 57 are used.
In SDH+OTN hybrid mode, only two groups of virtual ports are
available. Any port used in either group occupies 10 Gbit/s SDH
capacity.
|
| Mapping path | - STM-16<->ODU1<->ODU2<->OTU2
- STM-64<->ODU2<->OTU2
|
| Service processing | Supports VC-12, VC-3, VC-4 services as well as VC-4-4c, VC-4-8c,
VC-4-16c, and VC-4-64c concatenation services. |
| Overhead processing | - Processes section overheads of STM-16 or STM-64 signals.
- Transparently transmits or terminates path overheads.
- Sets and queries J0, J1, and C2 bytes.
- Provides four embedded control channels (ECCs) for communication.
|
| Protection schemes | - Supports SNCP.
- Supports Linear MSP.
- Supports Ring MSP.
|
| DCN | Supported |
| Loopback | Supports inloops and outloops on VC-4 paths. |
| Automatic search for optical fibers | Not supported |
Table 3 OTN functions and features supported by an HSNQ2 board
| Function and Feature | Description |
|---|
| Basic functions | - OTN mode: Multiplexes 32-channel ODU0, eight-channel ODUflex,
16-channel ODU1, or four-channel ODU2 signals into four-channel
ODU2 services.
SDH+OTN hybrid mode: Multiplexes signals from eight STM-16 or two STM-64 virtual optical
ports into four-channel ODU2 services. Multiplexes 16-channel ODU0, four-channel ODUflex, eight-channel
ODU1, or two-channel ODU2 signals into four-channel ODU2 services.
|
| Mapping path | |
| Protection schemes | Supports ODUk SNCP.NOTE:For ODU2/ODU1/ODU0/ODUflex signals, the board supports SNC/I,
SNC/N, and SNC/S. |
| Overhead processing | Extracts the GCC0 byte. Terminates the GCC0 byte and transparently transmits the GCC1/GCC2
byte. |
| DCN | Processes four channels of OTU2 DCN signals. |
| Loopback | Supports inloops and outloops on the WDM side and on paths. |
The technical specifications of HSNQ2 boards include optical port
specifications, laser hazard level, mechanical specifications, and
power consumption.
Port Specifications
Table 1 Port specifications
| Port Type | Description |
|---|
| 10 km 10 Gbit/s | 10 km 10 Gbit/s multirate optical module |
| 40 km 10 Gbit/s | 40 km 10 Gbit/s multirate optical module |
| 80 km 10 Gbit/s | 80 km 10 Gbit/s multirate optical module |
| 0.3 km 10 Gbit/s | 0.3 km 10 Gbit/s multirate optical module |
Table 2 Specifications of colored optical ports on an HSNQ2 board (DWDM
tunable wavelength)
| Item | Specifications |
|---|
| DWDM |
|---|
| Nominal bit rate | 10709225 kbit/s |
| Fiber type | Single-mode LC |
| Transmission distance (km) | 40 |
| Transmit optical power (dBm) | -1 to 2 |
| Center frequency (THz) | 192.10 to 196.00 |
| Center frequency deviation (GHz) | ±5 |
| Receiver sensitivity (dBm) | -16 |
| Minimum overload (dBm) | 0 |
| Maximum allowed dispersion (ps/nm) | 800 |
| Minimum extinction ratio (dB) | 10 |
| Maximum -20 dB spectral width (nm) | 0.3 |
| Minimum side mode suppression ratio (dB) | 35 |
Table 3 Specifications of colored optical ports on an HSNQ2 board (DWDM
fixed wavelength)
| Item | Specifications |
|---|
| DWDM |
|---|
| Nominal bit rate | 10709225 kbit/s |
| Fiber type | Single-mode LC |
| Transmission distance (km) | 40 | 80 |
| Transmit optical power (dBm) | -1 to 2 | -1 to 3 |
| Center frequency (THz) | 192.10 to 196.00 | 192.10 to 196.00a |
| Center frequency deviation (GHz) | ±10 | ±10 |
| Receiver sensitivity (dBm) | -16 | -24 |
| Minimum overload (dBm) | 0 | -9 |
| Maximum allowed dispersion (ps/nm) | 800 | 1600 |
| Minimum extinction ratio (dB) | 10 | 8.2 |
| Maximum -20 dB spectral width (nm) | 0.3 | 0.3 |
| Minimum side mode suppression ratio (dB) | 35 | 30 |
a: In the DWDM system, the module supports the 193.2 THz, 193.3
THz, 193.4 THz, 193.5 THz, 193.6 THz, 195.6 THz, 195.7 THz, 195.8
THz, 195.9 THz, and 196.0 THz wavelengths. |
Table 4 Specifications of colored optical ports on an HSNQ2 board (CWDM)
| Item | Specifications |
|---|
| CWDM |
|---|
| Nominal bit rate | 10709225 kbit/s |
| Fiber type | Single-mode LC |
| Transmission distance (km) | 70 |
| Transmit optical power (dBm) | 0 to 4 (1471 nm to 1571 nm) 0 to 3 (1591 nm to 1611 nm) |
Nominal center wavelength (nm) | 1471 to 1611 |
Center wavelength deviation (nm) | ±6.5 |
| Receiver sensitivity (dBm) | -23 (1471 nm to 1551 nm) -22 (1571 nm) -21 (1591 nm to 1611 nm) |
| Minimum overload (dBm) | -9 |
| Maximum allowed dispersion (ps/nm) | 1400 |
| Minimum extinction ratio (dB) | 8.2 |
| Maximum -20 dB spectral width (nm) | 1 |
| Minimum side mode suppression ratio (dB) | 30 |
Laser Hazard Level
The laser hazard level of HSNQ2 boards is HAZARD LEVEL 1,
indicating that the maximum power launched by the board is less
than 10 dBm (10 mW).
Mechanical Specifications
The mechanical specifications of HSNQ2 boards are as follows:
- Dimensions (H x W x D): 261.4 mm x 50.3 mm x 235.2 mm
- Weight (kg): 2.5
Power Consumption
The maximum power consumption of an HSNQ2 board at room temperature
(25ºC) is 142 W.
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