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Description
SSQ2CXL417 Version Description
The CXL4 is available in several functional versions. The functions provided by the functional versions are different.
| Item | Description |
|---|---|
| Functional versions | The CXL4 is available in two functional versions, namely, Q2 and Q3. The Q3CXL4 is discontinued. |
| Differences |
|
| Substitution | The Q5CXLLN can substitute for the Q2CXL4 that operates at the same line rate by using the board version replacement function, but active and standby boards must be the same, Q5CXLLN boards or Q2CXL4 boards. |
SSQ2CXL417 Application
The CXL4 provides service processing, service grooming, clock input/output, and communication control functions in the OptiX OSN system.
The CXL provides the other boards in the system with the timing information, processes the SDH signals, grooms the services between line boards or tributary boards, communicates with the other boards in the system, and performs the configuration and management functions for the other boards in the system.
SSQ2CXL417 Functions and Features
The CXL4 processes SDH signals, controls communication, grooms services, and inputs/outputs clock signals.
SDH Processing Unit
| Function and Feature | CXL4 |
|---|---|
| Basic functions | Transmits and receives 1xSTM-4 optical signals. |
| Specifications of optical interfaces | Supports different types of standard optical interfaces, namely, the I-4, S-4.1, L-4.1, L-4.2, and Ve-4.2. |
| Specifications of the optical module |
|
| Service processing | Supports the VC-12 services, VC-3 services, VC-4 services, and VC-4-4c concatenation services. |
| Overhead processing |
|
| Alarms and performance events | Reports various alarms and performance events, which facilitates the management and maintenance of the equipment. |
| Protection schemes | Supports the following protection schemes:
|
| Maintenance features |
|
SCC Unit
| Function and Feature | CXL4 |
|---|---|
| Basic functions | Configures and monitors services, monitors the service performance, and collects the information about the performance events and alarms. |
| Specifications of the interfaces |
|
| Maintenance features | The Q3CXL4 supports the CF card, simulation package loading, and diffused loading. The CF card is hot swappable. The capacity of a standard CF card is 512 MB and can be expanded to 1 GB. |
| DCC processing capability | Supports channel types of D1-D1, D1-D3, and D4-D12. For details, see OAM Information Interworking. |
| Fan alarm management | Manages fan alarms. |
| PIU management | Supports the in-service check function for the PIU and supports the failure check function for the lightning protection module of the PIU. |
| Protection schemes | Supports the 1+1 Hot Backup for the Cross-Connect, Timing and SCC Units. |
Cross-Connect Unit
| Function and Feature | CXL4 |
|---|---|
| Basic functions |
|
| Fast emergency channel | Provides two 4 Mbit/s HDLC fast emergency channels, which are used for the MSP switching, SNCP switching, TPS, or other functions. |
| Service processing |
|
| Protection schemes | Supports the 1+1 Hot Backup for the Cross-Connect, Timing and SCC Units (non-revertive, by default). |
Clock Unit
| Function and Feature | CXL4 |
|---|---|
| Basic functions | Provides the standard system synchronization clock. |
| Other functions |
|
| Input and output |
|
SSQ2CXL417 Valid Slots
The CXL4 must be installed in a valid slot in the subrack. Otherwise, the CXL4 cannot work normally.
The CXL4 can be installed in slots 4 and 5 in the subrack.
By default, slot 4 houses the active board and slot 5 houses the standby board.
SSQ2CXL417 Feature Code
The number code that follows the board name in the bar code is the feature code of the board. The feature code of the CXL4 indicates the type of optical interface.
| Board | Feature Code | Type of Optical Interface |
|---|---|---|
| SSQ3CXL410 and SSQ2CXL410 | 10 | S-4.1 |
| SSQ3CXL411 and SSQ2CXL411 | 11 | L-4.1 |
| SSQ3CXL412 and SSQ2CXL412 | 12 | L-4.2 |
| SSQ3CXL413 and SSQ2CXL413 | 13 | Ve-4.2 |
| SSQ3CXL414 and SSQ2CXL414 | 14 | I-4 |
SSQ2CXL417 Technical Specifications
The technical specifications of the CXL4 include the parameters specified for optical interfaces, laser safety class, mechanical specifications, and power consumption.
Parameters Specified for Optical Interfaces
| Parameter | Value | ||||
|---|---|---|---|---|---|
| Nominal bit rate | 622080 kbit/s | ||||
| Line code pattern | NRZ | ||||
| Application code | I-4 | S-4.1 | L-4.1 | L-4.2 | Ve-4.2 |
| Transmission distance (km) | 0 to 2 | 2 to 15 | 15 to 40 | 40 to 80 | 80 to 100 |
| Operating wavelength range (nm) | 1261 to 1360 | 1274 to 1356 | 1280 to 1335 | 1480 to 1580 | 1480 to 1580 |
| Type of fiber | Single-mode LC | Single-mode LC | Single-mode LC | Single-mode LC | Single-mode LC |
| Mean launched optical power (dBm) | -15 to -8 | -15 to -8 | -3 to -2 | -3 to -2 | -3 to -2 |
| Receiver sensitivity (dBm) | -23 | -28 | -28 | -28 | -34 |
| Minimum overload (dBm) | -8 | -8 | -8 | -8 | -13 |
| Minimum extinction ratio (dB) | 8.2 | 8.2 | 10 | 10 | 10.5 |
| Maximum -20 dB spectral width (nm) | – | – | 1 | 1 | 1 |
| Minimum side mode suppression ratio (dB) | – | – | 30 | 30 | 30 |
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 CXL4 are as follows:
- Dimensions (mm): 25.4 (W) x 235.2 (D) x 261.4 (H)
- Weight of the Q2CXL4 (kg): 1.1
- Weight of the Q3CXL4 (kg): 1.2
Power Consumption
The maximum power consumption of the CXL4 at room temperature (25°C) is 40 W.
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