Protection requirements

I. Panel The panel of the
EFT/ELT2/EGT single board is shown in Figure 1.
Figure 1 Panel diagram of the EFT/ELT2/EGT single board
| Indicator Name | Status | Meaning |
|---|---|---|
| ALM-Red Alarm Lamp | Long off | No alarm occurs on the board |
| Blinks 3 times every second | Emergency alarm occurs on single board | |
| Blinks 2 times every second | Important alarm occurs on single board | |
| 1 flash every second | Minor alarm occurs on single board | |
| Long light | Self-test failed | |
| RUN-Green run light | Blinks 5 times per second | The board is offline |
| Blinks 1 time every 1 second | Single board is in normal operation state | |
| Ethernet interface connection status indicator-LINK (green) | Long light | Network cable/fiber optic connection to the interface is successful |
| Long off | Network cable/fiber optic connection to the interface failed | |
| Ethernet interface data transceiver indicator - ACT (orange) | Long on or blinking | Data transmitting and receiving is in progress on the network interface |
| Long off | No data is being sent or received by the network interface |
| Single Board Features | Metro1000 SS42EFT | Metro1000 SS42ELT2 | Metro1000 SS45EGT | |
|---|---|---|---|---|
| Number of FE electrical interfaces | 4 | - | - | |
| Number of FE optical interfaces | - - | 2 | Number of FE optical interfaces - 2 | |
| Number of GE optical interfaces | -2 - Number of GE optical interfaces | 2 - 2 - 2 - Number of GE Optical Interfaces - - 1 | 1 | |
| Connectors | RJ-45 | RJ-45 | LC | |
| Interface Type | 10/100BASE-T(X) | 100BASE-FX | 1000BASE-LX/SX | |
| Operating Mode | FE Electrical Interface | Self-negotiating, 10M/100M full duplex | - | - |
| FE optical interface | -FE Optical Interface | 100M full duplex | FE Optical Interface - 100M Full Duplex | |
| GE optical interface | FE Optical Interface - 100M Full Duplex - GE Optical Interface | Self-Negotiating, 1000M Full Duplex | Self-negotiating, 1000M full duplex | |
| SDH Side VC-4 Bandwidth | 2 | 2 | 2 | |
| Bound bandwidth | 6×VC-3 or 63×VC-12+3×VC-3 | 6×VC-3 or 63×VC-12+3×VC-3 | 6×VC-3 or 63×VC-12 | |
| Number of VCTRUNK | 4 | 2 | 1 | |
| Layer 2 switching | - | Layer 2 switching - | -VLAN | |
| VLAN | -VLAN | - - - - - - - - - - - - - - - - - - - - - - - | VLAN - - | |
| EVPL | VLAN - - - EVPL | - - - - - - - - - - - - - - - - - - - - - - - | -EPL. | |
| EPL | Support | Support | Support | |
| EPLAN | -EPLAN | EPLAN - | - - | |
| EVPLAN | -EVPLAN | - - - - - - - - - - - - - - - - - - - - - - - | EVPLAN - - | |
| Spanning Tree | - - - - - - - - - - - - - - - - - - - - - - - | - - - - - - - - - - - - - - - - - - - - - - - | -GFP | |
| GFP | Support | Supported | Support | |
| LAPS | Support | Support | Support | |
| HDLC | Supported | Supported | Support | |
| LPT | Supported | Support | Supported | |
| Test Frames | Supported | Supported | Supported | |
| CAR | - - - - - - - - - - - - - - - - - - - - - - - | CAR - | IGMP-SNOOPING | |
| IGMP-SNOOPING | IGMP-SNOOPING | IGMP-SNOOPING | IGMP-SNOOPING - - - IGMP-SNOOPING | |
| LCAS V2 Protocol | Supported | Support | Support for | |
| Ethernet OAM | - - - - - - - - - - - - - - - - - - - - - - - | - - - - - - - - - - - - - - - - - - - - - - - | - - - - - - - - - - - - - - - - - - - - - - - | |
| RMON | Support | Supported | Support | |
| Parameter | Description |
|---|---|
| Interface rate | 10Mbit/s, 100Mbit/s |
| Line code type | Manchester coded signal (10M) or MLT-3 coded signal (100M) |
| Connector type | RJ-45 |
| Electrical interface specification | Conforms to IEEE 802.3 recommendations |
| Parameter | Parameter Description | |
|---|---|---|
| Interface rate | 100Mbit/s | |
| Line code type | NRZ coded signal | |
| Optical interface type | S-1.1 | Ie-1 |
| Fiber Type | Singlemode LC | Singlemode LC |
| Center wavelength (nm) | 1310 | 1310 |
| Maximum transmission distance (km) | 15 | 2 |
| Transmit optical power (dBm) | -15~-8 | -19.5~-14 |
| Receiving sensitivity (dBm) | -31 | -29 |
| Minimum overload point (dBm) | -7 | -12 |
| Parameter | Description | |
|---|---|---|
| Interface rate | 1000Mbit/s | |
| Line code type | 8B/10B coded signal | |
| Optical interface type | 1000BASE-LX | 1000BASE-SX |
| Fiber Type | Single Mode LC | Multimode LC |
| Center Wavelength (nm) | 1310 | 850 |
| Maximum transmission distance (km) | 15 | 0.5 |
| Transmit optical power (dBm) | -9.5 to -3 | -9.5~-2.5 |
| Receiving sensitivity (dBm) | -20 | -17 |
| Minimum overload point (dBm) | -3 | 0 |
The EFT/ELT2/EGT single boards have single board indicators, connectors, and barcodes on the faceplate.
The panel of the EFT/ELT2/EGT single board has single board status indicators and Ethernet interface connection status indicators, and the descriptions of the indicators are shown in Table 1.
The OptiX 155/622H Metro1000 SS42EFT single board has RJ-45 type electrical interfaces on the panel for sending and receiving 10M/100M Ethernet electrical signals.
The OptiX 155/622H Metro1000 SS42ELT2 single board has LC-type optical interfaces on the panel for sending and receiving FE optical signals.
The OptiX 155/622H Metro1000 SS45EGT single board has pluggable SFP (Small Form-Factor Pluggable) type optical interfaces on the panel for sending and receiving GE (Gigabit Ethernet) optical signals.
The EFT/ELT2/EGT single board accomplishes 10M/100M/1000M Ethernet service access and supports EPL service types.
EFT/ELT2/EGT supports GFP (Generic Framing Procedure), LAPS (Link Access Procedure-SDH), and HDLC (High Level Data Link Control) encapsulation to realize the encapsulation of Ethernet frames, and the mapping particles are VC-12 and VC-3. VC-12 and VC-3.
The functions and features of the EFT/ELT2/EGT single board are shown in Table 1.
The EFT/ELT2/EGT single board also has the following features:
The EFT/ELT2/EGT single-board specifications include interface specifications, single-board size, single-board weight, and power consumption.
The optical interface indicators of the ELT2 single board are shown in Table 2.
The optical interface indicators of the EGT single board are shown in Table 3.
The mechanical specifications of the EFT single board are as follows:
The mechanical specifications of the ELT2 single board are as follows:
The mechanical specifications of the EGT veneer are as follows:
The maximum power consumption of the EFT veneer at room temperature (25°C) is 8W.