Functions and Features

The NS4 board achieves cross-connection at the electrical layer, and to provide OTN interfaces and ESC.

For detailed functions and features, refer to Table 1 and Table 2.

Table 1 Functions and features of the NS4 board (Line Mode)

Function and feature	Description
Basic function	NS4 converts signals as follows: 80xODU0/80xODUflex/40xODU1/10xODU2/10xODU2e/2xODU3/1xODU4<->1xOTU4 Supports mixed transmission of ODU0, ODU1, ODUflex, ODU2, ODU2e, and ODU3 signals.
Cross-connect capabilities	Supports the cross-connection of 80 channels of ODU0/ODUflex signals or 40 channels of ODU1 signals or ten channels of ODU2/ODU2e signals or two channels of ODU3 signals or one channel of ODU4 signals between the NS4 and the cross-connect board.
OTN function	Supports the OTU4 interface on the WDM side. Supports the OTN frame format and overhead processing by referring to the ITU-T G.709. OTU4 layer: supports the SM function. ODUk (k=0, 1, 2, 3, 4, flex) layer: supports the PM and TCM function, and PM and TCM non-intrusive monitoring functions. NOTE: Only the TN56NS4/TN57NS4/TN58NS4 board supports TCM and TCM non-intrusive monitoring of the ODUflex layer.
WDM specification	Supports ITU-T G.694.1-compliant DWDM specifications.
Tunable wavelength function	The board can tune the optical signal output on the WDM side within the range of 80 wavelengths in C-band with the channel spacing of 50 GHz.
ESC function	Supported
PRBS function	Supports the PRBS function on the WDM side.
LPT function	Not supported
FEC coding	TN54NS4: Supports HFEC and SDFEC on the WDM side. TN56NS4: Supports SDFEC on the WDM side. TN57NS4: Supports HFEC and SDFEC2 on the WDM side. TN58NS4: Supports SDFEC2 on the WDM side. NOTE: Boards that use different FEC modes cannot interconnect with each other.
Alarms and performance events monitoring	Monitors BIP8 bytes (Bursty mode) to help locate line failures. Monitors parameters such as the bias current, temperature, and optical power of the laser. Monitors OTN alarms and performance events.
Regeneration board	The WDM-side signals from an NS4 board can be regenerated by another NS4 board or an LTX board of the same type. For example, The type of the TN54NS4T01 board is T01, and the TN54NS4T01 board can be regenerated by other NS4 and LTX boards of the T01 type, such as TN54NS4T01, TN57NS4T01, TN11LTXT01, and TN12LTXT01.
ALS function	Not supported
Latency measurement	TN54NS4/TN56NS4/TN57NS4: not supported. TN58NS4: supports the PM and TCM Latency measurement.
Test frame	Not supported
IEEE 1588v2	Not supported
Physical clock	Not supported
Optical-layer ASON	Supported
Electrical-layer ASON	Supported
Protection scheme	Supports ODUk SNCP. Supports intra-board 1+1 protection (when working with the OLP/DCP/QCP board). Supports tributary SNCP protection. Supports ODUk SPRing protection. NOTE: When the cross-connect granularity is ODUflex, the board does not support tributary SNCP protection and ODUk SPRing protection.
Loopback	WDM side Loopback		ODU0 Channel Loopback	ODU1 Channel Loopback	ODU2 Channel Loopback	ODU3 Channel Loopback	ODUflex Channel Loopback
Loopback	Supported		Supported	Supported	Supported	Supported	Supported
Protocols or standards compliance	Protocols or standards for transparent transmission (non-performance monitoring)	IEEE 802.3u IEEE 802.3z IEEE 802.3ae IEEE 802.3ba ITU-T G.707 ITU-T G.782 ITU-T G.783 GR-253-CORE Synchronous Optical Network (SONET) Transport Systems: Common Generic NCITS FIBRE CHANNEL PHYSICAL INTERFACES (FC-PI) NCITS FIBRE CHANNEL LINK SERVICES (FC-LS) NCITS FIBRE CHANNEL FRAMING AND SIGNALING-2 (FC-FS-2) NCITS FIBRE CHANNEL BACKBONE-3 (FC-BB-3) NCITS FIBRE CHANNEL SWITCH FABRIC-3 (FC-SW-3) NCITS FIBRE CHANNEL - PHYSICAL AND SIGNALING INTERFACE (FC-PH) NCITS FIBRE CHANNEL SINGLE-BYTE COMMAND CODE SETS-2 MAPPING PROTOCOL (FC-SB-2) SMPTE 292M Bit-Serial Digital Interface for High-Definition Television Systems ETSI TR 101 891 Professional Interfaces: Guidelines for the implementation and usage of the DVB Asynchronous Serial Interface (ASI) SMPTE 259M 10-Bit 4:2:2 Component and 4fsc Composite Digital Signals - Serial Digital Interface SMPTE 297-2006 Serial Digital Fiber Transmission System for SMPTE 259M, SMPTE 344M, SMPTE 292 and SMPTE 424M Signals NCITS SBCON Single-Byte Command Code Sets CONnection architecture (SBCON) ANSI X3.139 Information Systems - Fiber Distributed Data Interface (FDDI) - Token Ring Media Access Control (MAC) ANSI X3.148 Information Systems - Fiber Distributed Data Interface (FDDI) - Token Ring Physical Layer Protocol (PHY) ANSI X3.166 Information Systems - Fiber Distributed Data Interface (FDDI) Physical Layer Medium Dependent (PDM)
Protocols or standards compliance	Protocols or standards for service processing (performance monitoring)	ITU-T G.805 ITU-T G.806 ITU-T G.709 ITU-T G.872 ITU-T G.7710 ITU-T G.798 ITU-T G.874 ITU-T M.3100 ITU-T G.874.1 ITU-T G.875 ITU-T G.808.1 ITU-T G.841 ITU-T G.8201 ITU-T G.873.1 ITU-T G.694.1

Table 2 Functions and features of the NS4 board (Relay Mode)

Function and feature	Description
Basic function	The board is used in an electrical REG station in the system to implement electrical regeneration of optical signals.
Regenerating rate	OTU4: OTN service at a rate of 111.81 Gbit/s
OTN function	Provides the OTU4 interface on WDM-side. Supports the OTN frame format and overhead processing by referring to the ITU-T G.709. ODU4 layer: supports the PM and TCM function, and PM and TCM non-intrusive monitoring functions. OTU4 layer: supports the SM function.
WDM specification	Supports ITU-T G.694.1-compliant DWDM specifications.
Tunable wavelength function	The board can tune the optical signal output on the WDM side within the range of 80 wavelengths in C-band with the channel spacing of 50 GHz.
ESC function	Supported
PRBS function	Not supported
FEC coding	TN54NS4: Supports HFEC and SDFEC on the WDM side. TN56NS4: Supports SDFEC on the WDM side. TN57NS4: Supports HFEC and SDFEC2 on the WDM side. TN58NS4: Supports SDFEC2 on the WDM side. NOTE: Boards that use different FEC modes cannot interconnect with each other.
Alarms and performance events monitoring	Monitors BIP8 bytes (Bursty mode) to help locate line failures. Monitors parameters such as the bias current, temperature, and optical power of the laser. Monitors OTN alarms and performance events.
ALS function	Not supported
Test frame	Not supported
IEEE 1588v2	Not supported
Physical clock	Not supported
Optical-layer ASON	Supported
Electrical-layer ASON	Not supported
Protection scheme	Not supported
Protocols or standards compliance	Protocols or standards for transparent transmission (non-performance monitoring)	-
Protocols or standards compliance	Protocols or standards for service processing (performance monitoring)	ITU-T G.805 ITU-T G.806 ITU-T G.709 ITU-T G.872 ITU-T G.7710 ITU-T G.798 ITU-T G.874 ITU-T M.3100 ITU-T G.874.1 ITU-T G.875 ITU-T G.808.1 ITU-T G.841 ITU-T G.8201 ITU-T G.694.1

Parent topic: NS4

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Functions and Features