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Cisco

Cisco N540-FH-CSR-SYS | NCS 540 Cell Site Router, 8 CPRI, 2x 100G QSFP

N540-FH-CSR-SYS

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Description

The NCS 540 Front Haul Cell Site Router is a 1RU router in Cisco's Network Convergence System 540 family, built for IP RAN and mobile transport. It handles front-haul and mid-haul aggregation for GSM, UMTS, LTE, CDMA and 5G sites, including CPRI transport, and runs Cisco IOS-XR.

This cell site router variant provides 8 CPRI ports and 4 CPRI/1G/10G ports, 2 TSN 10G/25G ports, 8 x 1G/10G ports, 4 x 1G/10G/25G SFP+ ports and 2 x 100G QSFP ports. Timing is covered by a built-in GNSS receiver, BITS input and output, 1PPS and ToD, and 10MHz interfaces. Two load-sharing power supplies are fitted, and either one can carry the full system load. It differs from the N540-FH-AGG-SYS aggregation model, which offers 24 TSN/CPRI/1/10/25G ports and 4 x 100G ports.

Supported optics are listed in the Cisco Transceiver Module Group Compatibility Matrix. Dual-rate port operation needs a supported SFP, and Cisco recommends ports 14 to 25 for 25G core use.

Enquire with XS Network Tech for new or used pricing and availability.

Features

- Front-haul and mid-haul aggregation for 4G and 5G RAN, including CPRI transport
- Time-sensitive networking (TSN) ports for front-haul
- Built-in GNSS receiver plus BITS, 1PPS/ToD and 10MHz timing interfaces for network synchronisation
- Hot-swappable (OIR) SFPs with no impact on traffic on other ports
- Redundant, load-sharing power supplies
- Four dry-contact alarm inputs, each provisionable as critical, major or minor
- Runs Cisco IOS-XR

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

- Form factor: 1RU
- CPRI ports: 8 x CPRI plus 4 x CPRI/1G/10G
- TSN ports: 2 x 10G/25G
- 1G/10G ports: 8
- 1G/10G/25G SFP+ ports: 4
- 100G ports: 2 x QSFP (ports 26-27)
- Maximum 1GE interfaces: 16
- Maximum 10GE interfaces: 18
- Maximum 25GE interfaces: 6
- Maximum 100GE interfaces: 2
- Maximum CPRI interfaces: 12
- BITS: input/output, T1 1.544MHz or E1 2.048MHz, software-configurable, RJ-48
- 1PPS and ToD: input/output via shielded RJ-45 (RS422), ToD supports NTP and IEEE 1588-2008 formats
- GPS 10MHz and 1PPS: SMB connectors on the front panel
- GNSS: built-in receiver, requires an active antenna with LNA (22-30dB recommended gain), supplies 5V on the RF input
- External alarm inputs: 4 dry-contact inputs via RJ-45 on the rear panel
- Console: RS232 console port plus USB 2.0 Type-A USB console on the front panel
- USB: Type-A port for USB boot, file and log transfer
- Power supplies: dual, load-shared, a single PSU can carry the full load
- Operating system: Cisco IOS-XR

FAQs

Q: How does this model differ from the N540-FH-AGG-SYS?
A: The N540-FH-CSR-SYS is the cell site router variant with 8 CPRI, 4 CPRI/1G/10G, 2 TSN 10G/25G, 8 x 1G/10G, 4 x 1G/10G/25G and 2 x 100G ports. The N540-FH-AGG-SYS is the aggregation variant with 24 TSN/CPRI/1/10/25G ports and 4 x 100G ports.

Q: How is the router powered?
A: It has dual power supplies that share the load, and either one can carry the full system load, giving power redundancy.

Q: Which optics does it support?
A: Supported optics are listed in the Cisco Transceiver Module Group (TMG) Compatibility Matrix. Dual-rate port operation needs a supported SFP.

Q: Which ports should I use for 25G core connections?
A: Cisco recommends ports 14 to 25 for 25G core use, as optics on 25G ports 12 and 13 can hit a packet-corruption issue after repeated shut and no-shut cycles.

Q: What synchronisation interfaces does it provide?
A: It has a built-in GNSS receiver, BITS input and output, 1PPS and ToD via RJ-45, and 10MHz and 1PPS SMB connectors on the front panel. The GNSS input needs an active antenna with an LNA.

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