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ESR-4OC3ATM-SM
4 Port OC3/STS3c/STM1c ATM Line Card, single mode
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ESR-4OC3ATM-SM is a high-performance WAN module designed to deliver reliable OC-3 connectivity with data rates up to 155Mbps for ATM-based networks. Engineered with a fiber-optic LC connector, this module ensures robust performance for carriers and enterprise environments, seamlessly integrating with routers, switches, and telecom systems while supporting essential protocols such as ATM and TCP/IP.
ESR-4OC3ATM-SM offers a compact, modular form factor that simplifies installation and system upgrades in data centers and legacy networks. Its design not only facilitates high-speed communications but also ensures durable operation across a wide range of operating conditions, making it an ideal solution for expanding network capacity and modernizing critical infrastructure.
ESR-4OC3ATM-SM price is $23,915.00, a 46.9% saving from the Cisco list price of $45,000.00. ESR-4OC3ATM-SM is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for ESR-4OC3ATM-SM for additional pricing. Browse the full Cisco Router 10000 Series Modules & Cards series or explore all Cisco products.
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| ESR-4OC3ATM-SM |  ESR-PRE-COVER |  ESR-1OC12ATM-SM |  ESR-1COC12-SMI |  ESR-8E3/DS3 | |
|---|---|---|---|---|---|
| Compatibility | Cisco, Juniper, Arista, Dell, HP | Cisco, Juniper, Arista, Dell, HP | Cisco / Juniper / Arista / Dell / HP | Cisco, Juniper, Arista, Dell, HP | Cisco / Juniper / Arista / Dell / HP |
| Connector Type | Fiber LC | SFP+ | SFP | SFP+ | RJ-45 |
| Data Rate | OC-3 (155Mbps) | 10Gbps | OC-12 (622 Mbps) | 10G | 44.736 Mbps |
| Depth | 0.5 inches | 4.5 inches | N/A | N/A | N/A |
| Expansion Slots | N/A | NIM | N/A | N/A | NIM |
| Form Factor | Modular | PCIe | PCIe | PCIe | PCIe |
| Height | 1.0 inches | 0.3 inches | N/A | N/A | N/A |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Interface Ports | Fiber | Ethernet | SFP | SFP+ | RJ-45 |
| Max Speed | 155Mbps | 10Gbps | 622Mbps | 10Gbps | 44.736 Mbps |
| Module Type | WAN / ATM Module | Ethernet | ATM Module | SFP+ | WAN |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Power Consumption | 12W | 6W | N/A | 15W | 10W |
| Product Name | ESR-4OC3ATM-SM | ESR-PRE-COVER | ESR-1OC12ATM-SM | ESR-1COC12-SMI | ESR-8E3/DS3 |
| Product Type | Network Module | Network Card | Network Module | Network Card | Network Module |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Supported Features | Auto-negotiation, Signal Integrity, Error Correction | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | N/A | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Auto-negotiation / Wake-on-LAN / Jumbo Frames / QoS |
| Supported Protocols | ATM, TCP/IP | TCP/IP, iSCSI | ATM | TCP/IP | TCP/IP |
| Weight | 0.8 lbs | 0.5 lbs | N/A | N/A | N/A |
| Width | 3.5 inches | 3.5 inches | N/A | N/A | N/A |
Reliable ATM performance. The 4-port OC3 density is great for our legacy interconnects, and the single-mode optics are precise.
Steady throughput and easy integration. It handles cell-based traffic with zero drops, maintaining high signal integrity over our optical links.
Excellent card for legacy ATM backhaul. The four ports allow for significant consolidation and provide rock-solid reliability in the field.
Solid construction and great performance. The ATM mapping is accurate, and it works perfectly for our niche transport requirements.
High uptime and professional-grade optics. This card has been a stable part of our network for years without incident.
Efficient and dependable. The single-mode interface provides the reach we need for our regional branches. Highly recommended.
The ESR-4OC3ATM-SM is a high-performance ATM line card featuring four OC3/STS3c/STM1c ports on single-mode fiber, designed for carrier-grade networks requiring scalable bandwidth and reliable connectivity.
It provides four independent OC3/STS3c/STM1c ATM ports, allowing simultaneous 155 Mbps optical connections per port.
Each port supports 155 Mbps (OC3/STM1) throughput, aggregating up to 620 Mbps of total ATM bandwidth.
The card requires single-mode fiber (SMF) with industry-standard laser transmitters optimized for OC3 optical links.
Over single-mode fiber at 1310 nm, it supports up to 40 km of transport distance, subject to fiber specifications.
It uses SC optical connectors, offering secure, low-loss coupling for single-mode fiber links.
The ESR-4OC3ATM-SM is compatible with carrier-class chassis and routers that accept STM1/OC3 line cards, including major OEM platforms.
Power off the chassis, slide the card into an available slot, secure with the retention screws, reconnect fiber cables, and power up for automatic detection.
Yes, it offers hardware-based shaping and policing for CBR, VBR, and UBR ATM service classes to ensure QoS.
Yes, the card exposes performance counters and status via standard MIBs for SNMP-based network management.
It operates reliably between 0 °C to 50 °C (32 °F to 122 °F) and 5% to 95% non-condensing relative humidity.
Under typical load the card consumes 12 W, with a maximum draw of 15 W including transceiver modules.
Yes, it supports local and remote optical loopback tests and built-in self-diagnostics for link verification.
It supports 1+1 port-level redundancy and seamless protection switching to maintain high availability.
The card includes a one-year limited warranty and optional extended support packages with hardware replacement and technical assistance.
You can obtain pricing and availability through authorized distributors or by contacting our sales team via the official website.
United States