CABLE-16TDM-R3EL3=: How Does This Cisco Cable Enable High-Speed T3/E3 Network Backbones?

​​Defining the CABLE-16TDM-R3EL3=​​

The ​​CABLE-16TDM-R3EL3=​​ is a Cisco-certified ​​T3/E3 serial cable​​ engineered for high-capacity digital signal transmission. It connects Cisco routers and multiplexers to T3 (44.736 Mbps) or E3 (34.368 Mbps) networks, supporting legacy telecom infrastructure and hybrid IP-TDM deployments.

​​Core Technical Specifications​​

• ​​Connectors​​: Dual ​​BNC male connectors​​ with 75Ω coaxial cabling, optimized for impedance matching.
• ​​Cable Length​​: 3 meters (9.8 feet), ideal for rack-to-rack or rack-to-DSU/CSU installations.
• ​​Frequency Range​​: Supports up to ​​45 MHz​​ for error-free T3/E3 signal integrity.
• ​​Compliance​​: Meets ​​ANSI T1.102​​ (T3) and ​​ITU-T G.751​​ (E3) standards for pulse amplitude and jitter tolerance.

​​Compatibility and Target Use Cases​​

​​Supported Cisco Hardware​​:

• ​​Cisco 7600 Series Routers​​: Paired with ​​SPA-4XCT3/DS0​​ Shared Port Adapters.
• ​​ASR 9000 Series​​: For aggregating cell tower backhaul traffic.
• ​​MGX 8000 Series Voice Gateways​​: Integrating legacy PBX systems with VoIP networks.

​​Key Applications​​:

• ​​Telecom Backbones​​: Transporting DS3 circuits between central offices.
• ​​Video Broadcasting​​: Low-latency transmission for SDI-over-T3/E3 workflows.
• ​​Financial Networks​​: High-frequency trading systems requiring deterministic latency.

​​Why T3/E3 Cabling Precision Matters​​

• ​​Signal Loss Mitigation​​: 75Ω coaxial design minimizes attenuation over long distances.
• ​​Clock Synchronization​​: Proper impedance ensures accurate timing for SONET/SDH networks.
• ​​EMI Resistance​​: Double-shielded construction prevents crosstalk in dense cable trays.

​​Purchasing Guidelines​​

For guaranteed compatibility and performance, ​​itmall.sale​​ provides:

• ​​Authentic Cables​​: Tested with Cisco IOS-XE 17.6+ for T3/E3 interface validation.
• ​​Bulk Order Savings​​: Discounted rates for telecom operators deploying multi-node networks.
• ​​Technical Support​​: Access to Cisco’s TAC for configuration troubleshooting.

​​Addressing Critical Deployment Questions​​

​​Q: Can I use this cable with non-Cisco DSU/CSU devices?​​
A: Yes, but ensure the DSU/CSU supports ​​RS-449​​ or ​​V.35​​ signaling via BNC adapters.

​​Q: Does it support channelized T3 (CT3) configurations?​​
A: Yes—pair with Cisco’s ​​CT3 SPA​​ to split T3 into 28 T1 circuits.

​​Q: What’s the maximum distance without signal regeneration?​​
A: ~450 meters (1,476 feet) for T3; use repeaters beyond this range.

​​Final Insight​​

The CABLE-16TDM-R3EL3= is a bridge between legacy reliability and modern scalability. While IP dominates today’s networks, T3/E3’s deterministic performance remains irreplaceable for industries where microseconds matter. Cutting corners with generic coaxial cables risks introducing latency spikes or synchronization failures—outcomes far costlier than investing in Cisco-certified solutions. For network architects, this cable isn’t just a component; it’s a commitment to uninterrupted service.