Changsha Xingheda Technology Co., Ltd
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Version Description
The functional version of ISV3 boards is SL91.
Application
ISV3 boards function as SDH IF boards to transmit SDH radio services, or as Integrated IP microwave IF boards to transmit Integrated IP microwave services (native E1+Ethernet or native STM-1+Ethernet). If transmission capacity needs to be expanded, XPIC can be used.
NOTE:
Compared with ISU2/ISX2 boards, ISV3 boards support 512QAM or higher-order modulation schemes.
Functioning as SDH IF Boards
If applied to OptiX RTN 980 NEs building TDM radio networks, ISV3 boards function as large-capacity SDH IF boards to transmit TDM services.
Figure 1 Application scenario of ISV3 boards with XPIC disabled (1)
NOTE:
When working in SDH radio mode, ISV3 boards transmit 1xSTM-1 or 2xSTM-1 SDH radio services.
If a TDM radio network needs to transmit a small number of FE/GE services, these services must be encapsulated into TDM services by EMS6/EFP8 boards before transmission.
To expand the capacity of an SDH radio hop, use ISV3 boards with XPIC enabled to transmit TDM services, as shown in Figure 2.
Figure 2 Application scenario of ISV3 boards with XPIC enabled (2)
Functioning as Integrated IP microwave IF Boards
ISV3 boards also apply to OptiX RTN 980 NEs to transmit native E1 services, native STM-1 services, native Ethernet services, native MPLS/PWE3 services, or a combination of these services over Integrated IP microwave.
Figure 3 Application scenario of ISV3 boards with XPIC disabled (1)
NOTE:
In the preceding figure, if transmitted over Integrated IP microwave, E1 services can be native E1 services or CES/ATM E1 services, Ethernet services can be native Ethernet services or ETH PWE3 services, and STM-1 services must be native STM-1 services.
ISV3 boards will transmit native E1 services only when these boards work in native E1+Ethernet mode, and will transmit native STM-1 services only when these boards work in native STM-1+Ethernet mode.
Service boards shown in the preceding figure can be Ethernet interface boards, STM-1 interface boards, E1 interface boards, or Smart E1 processing boards.
To expand the capacity of an Integrated IP microwave hop, use ISV3 boards with XPIC enabled, as shown in Figure 4.
Functions and Features
The ISV3 board receives and transmits one channel of IF signals, provide a management channel to the ODU, and supplies -48 V power to the ODU. When the XPIC function is enabled, the ISV3 board also implements XPIC for IF signals by transmitting and receiving XPIC reference signals.
Table 1 lists the functions and features that the ISV3 board supports. The ISV3 board implements Ethernet and packet service functions by working with the packet switching unit integrated on the system control, switching, and timing board.
Table 1 Functions and features that the ISV3 supports
| Function and Feature | Description | |
| Basic functions | Receives and transmits one channel of IF signals. Provides a management channel to ODUs. Supplies -48 V power to ODUs. | |
| Microwave types | Integrated IP microwave SDH microwave NOTE: Integrated IP microwave is compatible with Hybrid microwave and Packet microwave. | |
| Running modes | IS2 mode: When running in this mode, the ISV3 board supports the modulation schemes QPSK-256QAM, and can interconnect only with ISU2/ISX2 boards. IS3 mode: When running in this mode, the ISV3 board supports the modulation schemes QPSK-2048QAM and the four extended modulation schemes QPSK Strong, 16QAM Strong, and 512QAM Light, and 1024QAM Light. ISV3 boards can interconnect with ISV3 boards or the RTN 905 only when running in the IS3 mode. NOTE: Compared with QPSK/16QAM, QPSK Strong/16QAM Strong has more powerful FEC capabilities, and therefore has better receiver sensitivity. It provides, however, less air interface bandwidth. Compared with 512QAM/1024QAM, 512QAM Light/1024QAM Light has weaker FEC capability, and therefore has worse receiver sensitivity. It provides, however, higher air interface bandwidth. | |
| High-order modulation schemes | IS3 mode: QPSK Strong/QPSK/16QAM Strong/16QAM/32QAM/64QAM/128QAM/256QAM/512QAM/512QAM Light/1024QAM/1024QAM Light/2048QAM IS2 mode: QPSK/16QAM/32QAM/64QAM/128QAM/256QAM NOTE: When running in IS3 mode, the ISV3 boards supports 2048QAM only when AM is enabled. The highest-order modulation scheme that an IF port supports depends on factors such as the ODU frequency band, XPIC status, and channel spacing. For details, see Technical Specifications. | |
| Service types in Integrated IP microwave mode | Native E1 + Ethernet Native STM-1 + Ethernet NOTE: Ethernet services can be native Ethernet services or packet services that are encapsulated into pseudo wire emulation edge-to-edge (PWE3) packets. | |
| Service types in SDH microwave mode | STM-1 2xSTM-1 | |
| Backplane bus bandwidth | 1 Gbit/s | |
| Automatic transmit power control (ATPC) | Supported | |
| Adaptive modulation (AM) | Supported only in Integrated IP microwave mode | |
| E1 priorities | Supported only if native TDM services transmitted over Integrated IP microwave are E1 services | |
| Compression of Ethernet frame headers | Supported | |
| Ethernet payload compression | Supported | |
| XPIC | Supported | |
| Anti-Theft function | Supported | |
| Radio working mode | See Technical Specifications. | |
| Link protection | 1+1 HSB/FD/SD protection (HSB stands for hot standby, FD stands for frequency diversity, and SD stands for space diversity.) | Supported |
| N+1 protection | Supported | |
| Link aggregation groups (LAGs) at air interfaces | Supported | |
| Physical link aggregation (PLA/EPLA) | Supported NOTE: EPLA is available only when CSHNA boards are used. Slots 1 and 2 do not support EPLA. | |
| TDM service protection | Subnetwork connection protection (SNCP) | |
| AES-based encryption at air interfaces | Supported | |
| K byte pass-through | Supported | |
| Ethernet service functions | See Table 2. | |
| Multiprotocol Label Switching (MPLS) functions | Refer to the description of Multiprotocol label switching (MPLS)/Pseudo wire emulation edge-to-edge (PWE3) functions provided in the sections about system control, switching, and timing boards. | |
| PWE3 functions | ||
| Clock | Physical layer synchronization | Air interface clock |
| Physical-layer clock protection | Protection implemented based on different clock source priorities Protection implemented by running the Synchronization Status Message (SSM) protocol Protection implemented by running the extended SSM protocol | |
| Packet time synchronization | Supports IEEE 1588v2 time synchronization. Supports ITU-T G.8275.1 time synchronization. | |
| Packet frequency synchronization | Not supported | |
| Data communication network (DCN) | Inband DCN | Supports inband DCN. DCN bandwidth is configurable. |
| Outband DCN | Provides one 3-byte DCC for each Integrated IP microwave channel. Supports one DCC that is composed of D1-D3 bytes, D4-D12 bytes, or D1-D12 bytes for each SDH microwave channel. | |
| Operation and management | Loopback | Supports inloops and outloops at IF ports. Supports inloops and outloops at composite (COMP) ports. |
| Cold and warm resets | Supported | |
| In-service field programmable gate array (FPGA) loading | Supported | |
| Pseudo random binary sequence (PRBS) test at IF ports | Supported | |
| Manufacturer information query | Supported | |
| Power consumption query | Supported | |
| Temperature monitoring | Supported | |
| Voltage monitoring | Supported | |
Table 2 Ethernet service functions
| Function and Feature | Description | |
| Ethernet services | Native Ethernet services | E-Line services Port-based E-line services VLAN-based E-line services E-Line services carried by QinQ links E-LAN services E-LAN services based on IEEE 802.1d bridges E-LAN services based on IEEE 802.1q bridges E-LAN services based on IEEE 802.1ad bridges |
| PWE3 Ethernet services | E-Line services carried by PWs E-Aggr services carried by PWs E-LAN services carried by PWs, that is, virtual private LAN services (VPLSs), supported only when the system control, switching, and timing board is an SLB2CSHN board | |
| Ethernet ring protection switching (ERPS) | Supported (complies with ITU-T G.8032 v1/v2) | |
| Operation, administration, and management (OAM) | Supports ETH OAM functions that comply with IEEE 802.1ag and IEEE 802.3ah. Supports frame loss measurement, frame delay measurement, and delay variation measurement functions that comply with ITU-T Y.1731. | |
| Spanning Tree Protocol (STP) | Supports Multiple Spanning Tree Protocol (MSTP) that runs only Common and Internal Spanning Tree (CIST) instances. This type of MSTP provides the same functions as Rapid Spanning Tree Protocol (RSTP). | |
| IGMP snooping | Supported | |
| Quality of service (QoS) | Refer to the description of QoS functions provided in the sections about system control, switching, and timing boards. | |
| Remote network monitoring (RMON) | Supported | |