The SL16A receives and transmits 1xSTM-16 optical signals,
processes overhead bytes, and performs the MSP.
Table 1 describes the functions and features of the SL16A.
Table 1 Functions and features of the SL16A
| Function and Feature | Description |
|---|
| Basic functions | Transmits and receives 1xSTM-16 optical signals. |
| Specifications of the optical interface | Supports different types of standard optical interfaces, namely,
the I-16, S-16.1, L-16.1, and L-16.2. The characteristics of the
optical interfaces comply with ITU-T G.957 and ITU-T G.692. The N3SL16A supports U-16.2Je (with the BA and pre-amplifier (PA)).
The characteristics of the optical interfaces of the U-16.2Je (with
the BA and PA) comply with the standards defined by . U-16.2Je is
compatible with U-16.2. The N3SL16A supports the CWDM and DWDM colored optical interfaces.
The optical interface uses the LC connector. The CWDM optical
interface supports the transmission distance of 80 km, and the DWDM
optical interface supports the transmission distance of 120 km. |
| Specifications of the optical module | - Supports the detection and query of the information about the
optical module.
- Provides the ALS function. The optical interface supports the
setting of the on/off state of a laser.
- Supports the usage and monitoring of the SFP optical module, which
facilitates the maintenance and upgrading of the optical module.
|
| Service processing | - Supports the VC-12 services, VC-3 services, VC-4 services, VC-4-4c
concatenation services, VC-4-8c concatenation services, and
VC-4-16c concatenation services.
- The N2SL16A supports the AU-3 services.
|
| Overhead processing | - Processes the section overheads of the STM-16 signals.
- Supports the transparent transmission and termination of the path
overheads.
- Supports the setting and query of the J0, J1, and C2 bytes.
- Supports one channel of ECC communication.
|
| Alarms and performance events | Reports various alarms and performance events, which facilitates
the management and maintenance of the equipment. |
| Specifications of the REG | - The N2SL16A/N3SL16A board supports the setting and query of the REG
working mode.
- With the REG function enabled, the board is in RS loopback mode and
processes only the regeneration section overhead.
|
| Protection schemes | - Supports the Two-fiber ring MSP.
- Supports the Four-fiber ring MSP.
- Supports the Linear MSP.
- Supports the SNCP.
- Supports the SNCMP.
- Supports the SNCTP.
- Supports the fiber-shared virtual trail protection.
- Supports the fiber-shared MSP and processes two sets of K bytes.
One SL16A supports a maximum of two MSP rings.
|
| Maintenance features | - Supports inloops and outloops at optical interfaces.
- The N1SL16A supports inloops on VC-4 paths. The N3SL16A board
supports inloops and outloops on VC-4 paths.
- Supports warm resets and cold resets. The warm reset does not
affect services.
- Supports the query of the manufacturing information of the board.
- Supports the in-service loading of the FPGA.
- The N2SL16A/N3SL16A board supports the TCM function.
- Supports the upgrade of the board software without affecting
services.
- Supports the PRBS function. For details, see Availability.
- Supports the press-to-collect function in fault data collection.
|
Relationship between the feature code of the SL16A and the type of
optical interface
The technical specifications of the SL16A include the parameters
specified for optical interfaces, laser safety class, mechanical
specifications, and power consumption.
Parameters Specified for Interfaces
Table 1 lists the parameters specified for the optical interfaces
of the SL16A.
Table 1 Specifications of the ports of the SL16A
| Port type | Description |
|---|
| I-16 | 2 km STM-16 two-fiber bidirectional optical interfaces |
| S-16.1 | 15 km STM-16 two-fiber bidirectional optical interfaces |
| L-16.1 | 40 km STM-16 two-fiber bidirectional optical interfaces |
| L-16.2 | 80 km STM-16 two-fiber bidirectional optical interfaces |
| U-16.2Je (BA+PA) | 170 km STM-16 two-fiber bidirectional optical interfacesNOTE:Only N3SL16A board supports U-16.2Je (BA+PA). |
Table 2 list the parameters specified for the colored optical
interfaces of the N3SL16A.
Table 2 Specifications of the ports of the N3SL16A
| Port type | Description |
|---|
| 80 km CWDM | 80 km CWDM STM-16 optical interfaces |
| 120 km DWDM | 120 km DWDM STM-16 optical interfaces |
Laser Safety Class
The safety class of the laser on the board is Class 1. The maximum
launched optical power of the optical interfaces is less than 10
dBm (10 mW).
Mechanical Specifications
The mechanical specifications of the SL16A are as follows:
- Dimensions (mm): 25.4 (W) x 235.2 (D) x 261.4 (H)
- Weight of the N1SL16A (kg): 0.6
- Weight of the N2SL16A (kg): 1.1
- Weight of the N3SL16A (kg): 0.9
Power Consumption
The maximum power consumption of the N1SL16A at room temperature
(25°C) is 20 W.
The maximum power consumption of the N2SL16A at room temperature
(25°C) is 20 W.
The maximum power consumption of the N3SL16A at room temperature
(25°C) is 22 W.
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