The OSN2500 (hereinafter referred to as OSN2500) is a new generation of intelligent optical transmission equipment developed by Huawei Technologies Co., Ltd. The OptiX OSN2500 enables efficient transmission of voice and data services on a single platform, integrating the following technologies: SDH, PDH, Ethernet, RPR, ATM, SAN, WDM, DDN, and ASON. It can be used in mixed networking with OptiX OSN9500, OptiX OSN7500, OptiX OSN3500, OptiX OSN3500 II, OptiX OSN2500 REG, OptiX OSN1500, OptiX 2500+ (Metro 3000), and OptiX 155/622H (Metro 1000).
OSN2500 Hybrid Network Topology Diagram
OSN2500 device cross capacity
| Single board name | Advanced cross-ability | Low-order cross capability | Single rack access capability | use |
|---|---|---|---|---|
| Q2/Q3CXL series single-layer boards | 20Gbit/s (128×128 VC-4) | 20 Gbit/s (128×128 VC-4) is equivalent to (384×384 VC-3) or (8064×8064 VC-12). | 18.75Gbit/s (120×120 VC-4) | - |
| Q5CXL series single-layer veneer | New backplate: 60Gbit/s (384×384 VC-4) Old backboard: 20Gbit/s (128×128 VC-4) | 20Gbit/s (128×128 VC-4) is equivalent to (384×384 VC-3) or (8064×8064 VC-12). | New backplate: 22.5Gbit/s (144 × 144 VC-4) Old backboard: 18.75Gbit/s (120×120 VC-4) | - |
OSN2500 transmission equipment service access capabilities
| Business type | Maximum access capacity of a single rack |
|---|---|
| STM-16 standard or cascaded services | Route 9 |
| STM-16 (FEC) business | Route 7 |
| STM-4 standard or cascaded services | Route 36 |
| STM-1 Standard Services | Route 92 |
| STM-1 (Electronic) Services | Route 34 |
| E4 business | Route 16 |
| E3/T3 business | Route 57 |
| E1 business | Route 254 |
| T1 service | Route 252 |
| Fast Ethernet (FE) services | Route 88 |
| Gigabit Ethernet (GE) services | Route 28 |
| STM-1 ATM Services | Route 28 |
| STM-4 ATM Services | Route 7 |
| ESCON business | Route 20 |
| FICON/FC100 services | Route 9 |
| FC200 business | Route 4 |
| DVB-ASI services | Route 20 |
| N×64kbit/s service (N: 1-31) | Route 32 |
| Framed E1 service | Route 32 |
OSN2500 Transmission Equipment Service Interface Types
| Interface type | describe |
|---|---|
| SDH service interface | STM-1 electrical interfaces: SMB interface, SAA interface STM-1 optical interfaces: I-1, Ie-1, S-1.1, L-1.1, L-1.2, Ve-1.2 STM-4 optical interfaces: I-4, S-4.1, L-4.1, L-4.2, Ve-4.2 STM-16 optical interfaces: I-16, S-16.1, L-16.1, L-16.2, L-16.2Je, V-16.2Je, U-16.2Je (CXL16 does not provide L-16.2Je, V-16.2Je, or U-16.2Je optical interfaces) STM-16 optical interface (FEC): Ue-16.2c, Ue-16.2d, Ue-16.2f The STM-16 optical interface, compliant with ITU-T G.692, can output fixed wavelengths from 191.1 THz to 196.0 THz. |
| PDH service interface | 75Ω/120Ω E1 electrical interface: DB44 connector 100Ω T1 electrical interface: DB44 connector 75Ω E3, T3 and E4 electrical interfaces: SMB connector |
| Ethernet service interface | 10/100BASE-TX, 100BASE-ZX, 100BASE-VX, 100BASE-LX, 100BASE-FX, 1000Base-VX, 1000Base-SX, 1000Base-LX, 1000Base-ZX, 1000Base-T |
| DDN service interface | RS449, EIA530, EIA530-A, V.35, V.24, X.21 and Framed E1 interfaces |
| ATM service interface | STM-1 optical interfaces: Ie-1, S-1.1, L-1.1, L-1.2, Ve-1.2 STM-4 optical interfaces: S-4.1, L-4.1, L-4.2, Ve-4.2 E3 interface: Accessed via E3 board IMA E1 interface: Accessed via E1 board |
| SAN/Video service interface | FC100, FICON, FC200, ESCON, DVB-ASI service optical interfaces |
**Note:** Ue-16.2c, Ue-16.2d, Ue-16.2f, L-16.2Je, V-16.2Je, U-16.2Je, Ve-1.2, and Ve-4.2 are optical interface specifications defined by Huawei.
OSN2500 transmission equipment supports optical module types
The OSN2500 supports not only SFP and eSFP optical modules, but also single-fiber bidirectional optical modules. When the board is used with a single-fiber bidirectional optical module, a single fiber connected to that port can simultaneously transmit and receive optical signals, saving a significant amount of fiber resources.
**Note:** Different single-fiber bidirectional optical modules have different transmit and receive wavelengths. The two sites to be connected must use the same type of single-fiber bidirectional optical module.
OSN2500 device-level backup protection
| Business Areas | Protection type |
|---|---|
| PDH | TPS protection |
| SDH (STM-1) | TPS protection |
| DDN | TPS protection |
| Ethernet | TPS protection, PPS protection, BPS protection, LAG protection, DLAG protection |
| ATM | 1+1 hot backup |
| Cross clock unit | 1+1 hot backup |
| Control Communication Unit | 1+1 hot backup |
| Wavelength conversion unit | Intra-board protection (dual-transmitter selective receiver) and inter-board protection (1+1 hot backup) |
| microwave unit | 1+1 HSB/FD/SD protection and N+1 protection |
| Power interface unit | 1+1 hot backup, 1:N centralized backup |
| Fan unit | The power supplies for the two fan modules are backups for each other. |
| Protection under single-board abnormal conditions | Software loading process includes power failure protection, overvoltage and undervoltage protection, and single-board temperature detection. |
Description: The OptiX OSN 2500 supports the coexistence of two TPS protection groups with different service types. | |
OSN2500 Device Network-Level Backup Protection
| Network layer | Protection methods |
|---|---|
| SDH | Linear multiplex section protection |
| Reuse section protection ring | |
| Subnet Connection Protection (SNCP), Subnet Connection Multipath Protection (SNCMP), and Subnet Connection Tunnel Protection (SNCTP) | |
| DNI protection | |
| Shared Fiber Virtual Path Protection | |
| Multiplex section shared optical path protection | |
| Ethernet | RPR protection |
| LCAS protection | |
| LPT protection | |
| STP/RSTP protection | |
| MSTP protection | |
| ATM | VP-Ring/VC-Ring protection |
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