Description
The TP-Link TL-SM321B 1000Base-BX WDM Bi-Directional SFP Module is a sophisticated networking component engineered for long-range data transmission. Operating on the IEEE 802.3z standard, this module utilizes a single LC connector to handle both transmission and reception of data. By using TX: 1310nm and RX: 1550nm wavelengths, it maximizes infrastructure efficiency, allowing network administrators to expand their reach without the need for additional fiber cabling. Its robust 3.3V power design and wide operating temperature range ensure stability in diverse enterprise environments.
This product is for:
- Network Administrators: Professionals seeking to optimize fiber utilization by doubling bandwidth on a single strand.
- ISP Providers: Service providers delivering high-speed fiber-to-the-building (FTTB) or fiber-to-the-home (FTTH) services over distances up to 10km.
- Enterprise IT Departments: Organizations needing to connect separate buildings or remote campus locations with high-speed Gigabit links.
- Data Center Operators: Facilities requiring high-density, hot-swappable interconnects for switches and routers.
- Security System Integrators: Technicians deploying IP surveillance cameras at significant distances from the central monitoring station.
Detailed specifications:
- Standards and Protocols: IEEE 802.3z, CSMA/CD, TCP/IP
- Wavelength: TX: 1310nm / RX: 1550nm
- Fiber Type: 9/125 μm Single-mode Fiber
- Maximum Cable Length: 10 km (6.2 miles)
- Data Rate: 1.25 Gbps
- Connector Type: Single LC Port
- Power Supply: 3.3V
- Operating Temperature: 0°C to 70°C (32°F to 158°F)
- Certifications: FCC, CE
Deploying the TL-SM321B provides a seamless integration experience for modern network infrastructures. The hot-swappable SFP form factor allows for immediate installation or replacement without interrupting the host switch's operation. In practical application, the module delivers consistent 1.25Gbps throughput with minimal latency, even at the edge of its 10km range. The metal housing is designed for durability and efficient heat dissipation, maintaining performance levels even in non-climate-controlled equipment closets where temperatures might fluctuate between 0°C and 70°C.
When compared to traditional dual-strand SFP modules, the TL-SM321B offers a distinct advantage in cost and resource management. Standard modules require two separate fiber strands for a single link, whereas the TL-SM321B uses WDM technology to transmit and receive on different wavelengths over one strand. This makes it an essential tool for scenarios where fiber availability is limited. It is important to note that for a functional link, the TL-SM321B (TX 1310nm) must be paired with its counterpart, the TL-SM321A (TX 1550nm), at the opposite end of the connection.
Q&A:
- Can I use the TL-SM321B with multi-mode fiber? No, this module is specifically designed for 9/125 μm single-mode fiber to ensure signal integrity over long distances.
- Do I need two TL-SM321B modules to create a link? No, you must pair one TL-SM321B with one TL-SM321A, as they use complementary transmission and reception wavelengths.
- Is this module compatible with other brands? While designed for TP-Link switches, it follows standard SFP protocols; however, always verify the host device's SFP slot compatibility.
- Does this module support hot-swapping? Yes, the TL-SM321B is hot-pluggable, meaning it can be installed or removed while the switch is powered on.
- What is the maximum supported distance? This module supports a maximum transmission distance of up to 10 kilometers (approximately 6.2 miles).
