Function and Feature

Description

Basic functions

Transmits and receives 1xSTM-64 optical signals.

Specifications of the optical interface

1. The N1SL64/N2SL64 supports different types of standard optical interfaces, namely, the I-64.1, I-64.2, S-64.2b, L-64.2b (BA), Le-64.2, Ls-64.2, and V-64.2b (BA + PA + dispersion compensation unit (DCU)). The characteristics of the optical interfaces of the S-64.2b, L-64.2b, Ls-64.2, and V-64.2b types comply with ITU-T G.691 and ITU-T G.692. The characteristics of the optical interface of the Le-64.2 type comply with the standards defined by Huawei.
2. The N4SL64 supports different types of standard optical interfaces, namely, the I-64.1, S-64.2b, Le-64.2, P1L1-2D2, and V-64.2b (BA + PA + DCU). The characteristics of the optical interfaces of the I-64.1, S-64.2b, Le-64.2, and V-64.2b types comply with ITU-T G.691. The characteristics of the optical interface of the P1L1-2D2 type comply with ITU-T G.959.
3. The N1SL64/N2SL64 supports the DWDM colored optical interfaces, which use LC connectors. The DWDM optical interface supports the transmission distance of 40 km.
4. The N4SL64 supports the CWDM and DWDM colored optical interfaces. The optical interface uses the LC connector. The CWDM optical interface supports the transmission distance of 70 km, and the DWDM optical interface supports the transmission distance of 40 km and 80 km.
5. N4SL64 supports one-fiber bidirectional optical modules.
6. Supports the output of the standard wavelengths that comply with ITU-T G.692 and can be directly connected to the WDM equipment.

Specifications of the optical module

1. Supports the detection and query of the information about the optical module.
2. Provides the ALS function. The optical interface supports the setting of the on/off state of a laser.
3. The N4SL64 supports the usage and detection of the pluggable XFP optical module, which facilitates the maintenance and upgrading of the optical module.

Service processing

1. Supports the VC-12 services, VC-3 services, and VC-4 services.
2. The N1SL64, N2SL64, and N4SL64 support the VC-4-4c concatenation services, VC-4-8c concatenation services, Vc-4-16c concatenation services, and VC-4-64c concatenation services.
3. The N2SL64 supports the AU-3 services.

Overhead processing

1. Processes the section overheads of the STM-64 signals.
2. Supports the transparent transmission and termination of the path overheads.
3. Supports the setting and query of the J0, J1, and C2 bytes.
4. Supports one channel of ECC communication.

Alarms and performance events

1. Reports various alarms and performance events.

Specifications of the REG

1. Supports the setting and query of the REG working mode.
2. With the REG function enabled, the board is in RS loopback mode and processes only the regeneration section overhead.

Protection schemes

1. Supports Two-fiber ring MSP.
2. Supports Four-fiber ring MSP.
3. Supports Linear MSP.
4. Supports SNCP.
5. Supports SNCMP.
6. Supports SNCTP.
7. Supports the fiber-shared virtual trail protection.
8. Supports the fiber-shared MSP and processes two sets of K bytes. One SL64 supports a maximum of two MSP rings.

Maintenance features

1. Supports inloops and outloops at optical interfaces.
2. The N1SL64/N4SL64 supports inloops and outloops on VC-4 paths.
3. Supports warm resets and cold resets. The warm reset does not affect services.
4. Supports the query of the manufacturing information of the board.
5. Supports the in-service loading of the FPGA.
6. The N2SL64 supports the TCM function.
7. Supports the upgrade of the board software without affecting services.
8. Supports the press-to-collect function in fault data collection.
9. The N4SL64 detects and reports voltage performance.
10. Supports the PRBS function. For details, see Availability.
11. Hot board swapping.

Item

Description

Functional versions

The SL64 is available in the following functional versions: N4, N2 and N1.

Differences

1. The N1SL64/N4SL64 supports the board version replacement function, but does not support the TCM function or AU-3 services.
2. The N2SL64 does not support the board version replacement function, but supports the TCM function and AU-3 services, the TCM function and AU-3 services cannot be available at the same time.
3. The N4SL64 supports pluggable XFP optical modules.
4. The N4SL64 detects and reports voltage performance.
5. SL64 boards of different versions support different loopback functions. For details, see Functions and Features.

Substitution

When the TCM function and AU-3 services are not required, the N1SL64 can substitute for the N2SL64.

When the TCM function and AU-3 services are not required, the N4SL64 can substitute for the N2SL64.

The N4SL64 supports the board version replacement function to substitute for the N1SL64.