Defining the CAB-L240-20-SM-TM=

The ​​CAB-L240-20-SM-TM=​​ is a ​​single-mode fiber optic cable​​ engineered by Cisco for high-bandwidth, long-haul data transmission. With a ​​20-meter length​​ and ​​LC/APC connectors​​, it is tailored for environments demanding minimal signal loss and high reliability, such as data centers, telecom networks, and enterprise backbones.

Core Technical Specifications

• ​​Cable Type:​​ ​​OS2 single-mode fiber​​, optimized for distances up to ​​40 kilometers​​ (24.8 miles)
• ​​Connectors:​​ ​​LC/APC (Angled Physical Contact)​​, reducing back reflection by over 70% compared to UPC connectors
• ​​Wavelength Support:​​ ​​1310nm and 1550nm​​, compatible with DWDM/CWDM systems
• ​​Jacket Rating:​​ ​​OFNP (plenum-rated)​​ for fire safety in air-handling spaces

Key Applications

​​Where is the CAB-L240-20-SM-TM= most effective?​​

• ​​Metro network links​​ between Cisco ASR 9000 series routers
• ​​Data center interconnects​​ for Nexus 9000 switches supporting 400G ZR/ZR+ optics
• ​​Telecom backbone infrastructure​​ requiring low-latency, high-throughput connectivity

Addressing User Concerns

​​Q: Can this cable be used with multimode transceivers?​​
No. The ​​single-mode fiber core​​ (9µm) is incompatible with multimode transceivers (50µm/62.5µm). Mixing fiber types will result in ​​total signal loss​​.

​​Q: Is it suitable for outdoor aerial installations?​​
Yes. The ​​armored variant​​ (if available) withstands environmental stressors like UV exposure and temperature swings. For standard versions, use protective conduits in harsh conditions.

Purchasing and Availability

The CAB-L240-20-SM-TM= is available through Cisco’s authorized distributors. For pricing and lead times, visit the “CAB-L240-20-SM-TM=” page at itmall.sale.

Final Perspective

The CAB-L240-20-SM-TM= underscores Cisco’s commitment to ​​future-proof infrastructure​​. While its niche application may seem restrictive, the ​​40km reach and DWDM readiness​​ make it indispensable for scaling networks. In an era where data demands grow exponentially, compromising on fiber quality risks costly upgrades down the line—a lesson many learn too late.