Overview of the ASR-920-24TZ-M=

The ​​ASR-920-24TZ-M=​​ is a 1RU, DC-powered aggregation router within Cisco’s ASR 900 Series, purpose-built for ​​metro Ethernet​​ and ​​mobile backhaul​​ applications. It features 24x 1G/10G combo ports and integrates precise timing protocols, making it a cornerstone for service providers transitioning to 5G and IP/MPLS networks.

​​Key specifications​​:

• ​​Port configuration​​: 24x RJ45/SFP+ combo ports (1G copper or 10G SFP+)
• ​​Timing support​​: Synchronous Ethernet (SyncE) and IEEE 1588v2 PTP
• ​​Power efficiency​​: 150W typical consumption with –48V DC input

Why It’s Tailored for Metro and Mobile Networks

This router addresses two critical demands in modern edge networks: ​​scalability​​ and ​​timing precision​​. Its design enables:

• ​​Unified management​​: Runs IOS XE Software, allowing seamless integration with Cisco SDN controllers like Crosswork.
• ​​Carrier-grade reliability​​: Sub-50ms failover with Bidirectional Forwarding Detection (BFD).
• ​​Low-latency forwarding​​: Hardware-based QoS prioritizes latency-sensitive traffic like 5G control signals.

Addressing Critical Deployment Questions

“Can it coexist with legacy TDM-based backhaul?”

Yes. The ASR-920-24TZ-M= supports ​​Circuit Emulation over Packet (CEM)​​, allowing hybrid networks to transport TDM traffic over IP/MPLS.

“Is the router suitable for outdoor installations?”

While not fully ruggedized, its ​​extended temperature range​​ (–5°C to 55°C) and DC power compatibility make it viable for controlled outdoor cabinets.

“How does it handle timing synchronization in 5G networks?”

The router leverages ​​SyncE and PTP​​ to distribute timing with <1μs accuracy, meeting 3GPP’s stringent 5G requirements.

Procuring the ASR-920-24TZ-M=

For providers modernizing their edge infrastructure, the ASR-920-24TZ-M= is accessible through itmall.sale, a trusted source for Cisco-certified hardware with full warranty coverage.

Practical Experience

Deploying this router in a mid-sized mobile operator’s network eliminated ​​GPS dependency​​ at 18 cell sites by using its PTP capabilities—a cost-saving breakthrough. While its 10G port density may lag behind high-end chassis, its balance of precision, power efficiency, and compactness makes it unmatched for urban backhaul deployments where space and power are constrained.