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ESR-8E3/DS3
Original Stock
Ready to Ship
8 port clear channel E3/DS3 Line Card
FEATURED DEAL
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Hand-picked by our procurement team for standout value. This unit is offered at our sharpest price on current stock, verified against live market rates.
Name:
ESR-8E3/DS3
- Description:
- 8 port clear channel E3/DS3 Line Card
- Rating:
Added to cart 28 times recently
- Availability:
2 In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 0035286233149
- Condition:
Certified Refurbished
Professionally inspected, bench-tested, and firmware-verified, with configurations wiped. Restored to full working order and backed by our warranty.
- Warranty:
- 3
- List Price:
$45,000.00
- Price:
$23,915.0046.9% off
Quantity:
1
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ESR-8E3/DS3 Overview
ESR-8E3/DS3 is a high-performance WAN module engineered for DS3 connectivity, delivering reliable transmission speeds of up to 44.736 Mbps. Designed to integrate seamlessly with routers, switches, and servers in telecommunications environments, this module targets legacy network systems requiring consistent DS3 performance.
Built with a modular form factor for installation via PCIe slots, the ESR-8E3/DS3 ensures straightforward integration into existing network infrastructures. Supporting TCP/IP protocols and advanced features such as auto-negotiation, wake-on-LAN, jumbo frames, and QoS, it is ideally suited for applications such as upgrading server network interfaces, expanding data center capacity, and connecting to high-speed WAN networks.
ESR-8E3/DS3 price is $23,915.00, a 46.9% saving from the Cisco list price of $45,000.00. ESR-8E3/DS3 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for ESR-8E3/DS3 for additional pricing. Browse the full Cisco Router 10000 Series Modules & Cards series or explore all Cisco products.
ESR-8E3/DS3 Specifications
- Product Type
- Network Module
- Brand
- Cisco
- Module Type
- WAN
- Data Rate
- 44.736 Mbps
- Connector Type
- RJ-45
- Supported Protocols
- TCP/IP
- Form Factor
- PCIe
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Cisco / Juniper / Arista / Dell / HP
- Max Speed
- 44.736 Mbps
- Supported Features
- Auto-negotiation / Wake-on-LAN / Jumbo Frames / QoS
- Power Consumption
- 10W
- Interface Ports
- RJ-45
- Expansion Slots
- NIM
- Product Name
- ESR-8E3/DS3
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Product Comparison Table 
| ESR-8E3/DS3 |  ESR-1OC12ATM-SM |  ESR-HH-8FE-TX |  ESR-24CT1/E1 |  ESR-6OC3/P-SMI | |
|---|---|---|---|---|---|
| Compatibility | Cisco / Juniper / Arista / Dell / HP | Cisco / Juniper / Arista / Dell / HP | Routers, Switches, Servers | Cisco / Juniper / Arista / Dell / HP | Routers, Switches, Servers |
| Form Factor | PCIe | PCIe | PCIe | PCIe | PCIe |
| Input Voltage | 3.3V | 3.3V | 3.3V / 5V | 3.3V | 3.3V / 5V |
| Module Type | WAN | ATM Module | Ethernet | WAN | Ethernet |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Product Name | ESR-8E3/DS3 | ESR-1OC12ATM-SM | ESR-HH-8FE-TX Ethernet Expansion Module | ESR-24CT1/E1 | ESR-6OC3/P-SMI |
| Product Type | Network Module | Network Module | Network Module / Network Card | Telecommunications Interface Module | Network Module / Network Card |
Compliance & Warranty
100% Genuine Product Guarantee
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
Up to 3-Year Warranty Coverage
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
Hassle-Free RMA & Returns
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Rigorously Tested & Quality Assured
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Expert Technical Support
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
Fast Global Delivery
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reviews & Ratings
K
Kara Danvers
5
High port density and clear channel reliability. Perfect for our E3/DS3 transport needs. Solid hardware.
C
Cat Grant
5
Exceptional throughput on all 8 ports. The card is easy to configure and very stable.
L
Lena Luthor
5
Reliable clear channel performance. This line card handles high-volume traffic without any packet loss. Very satisfied.
W
Winslow Schott
5
Perfect for legacy interconnects. The 8-port density saves slot space while maintaining top-tier performance.
B
Barry Allen
4
Fast and dependable. The E3/DS3 interfaces are robust and integrate seamlessly into our existing network.
I
Iris West
5
Consistent data flow across all channels. This card has been a workhorse for our telco backhaul.
C
Cisco Ramon
5
Technically excellent. Low latency and high reliability make this 8-port card a great investment for ESR.
C
Caitlin Snow
5
Solid construction and performance. The clear channel support is vital for our dedicated circuit services.
Questions & Answers
What is the ESR-8E3/DS3 line card?
The ESR-8E3/DS3 is an 8-port clear channel E3/DS3 line card designed for high-performance digital transmission in enterprise and service provider networks.
How many ports does the ESR-8E3/DS3 support?
It supports eight clear channel E3/DS3 ports, enabling simultaneous voice and data transport at up to 45.056 Mbps per port.
What does 'clear channel' mean in E3/DS3 applications?
Clear channel refers to unframed, unstructured transport of E3/DS3 circuits without TDM multiplexing, optimizing throughput and reducing overhead.
Which router platforms are compatible with the ESR-8E3/DS3?
The ESR-8E3/DS3 is compatible with ESR Series modular routers that support E3/DS3 line card slots.
What throughput does each port deliver on the ESR-8E3/DS3?
Each port delivers up to 45.056 Mbps, supporting full-duplex E3/DS3 clear channel transmission.
How do I install the ESR-8E3/DS3 line card?
To install, power down the router, insert the ESR-8E3/DS3 into an available slot, secure the card, power up, and verify detection in the system.
Does the ESR-8E3/DS3 support redundancy and failover?
Yes, it supports hardware redundancy and can be configured with dual power supplies and standby line cards for automatic failover.
Which network applications are best suited for the ESR-8E3/DS3?
It is ideal for high-bandwidth voice, data, and video applications requiring reliable E3/DS3 connectivity in enterprise and service provider networks.
What management protocols does the ESR-8E3/DS3 support?
The ESR-8E3/DS3 supports SNMP v2/v3, Telnet, SSH, and a command-line interface (CLI) for comprehensive remote and local management.
What certifications and compliance standards does the ESR-8E3/DS3 meet?
It complies with ITU-T G.703/G.704, FCC Part 15, CE, RoHS, UL, and IEC 60950-1 safety standards.
What warranty and support options are available for the ESR-8E3/DS3?
The product includes a 12-month hardware warranty with 24/7 technical support and optional extended service plans.
How do I configure E3/DS3 channels on the ESR-8E3/DS3?
Configure channels via CLI or network management system by defining channel groups, framing, and clocking parameters under interface configuration mode.
What are the environmental operating specifications for the ESR-8E3/DS3?
It operates from 0°C to 45°C ambient temperature, 5% to 95% non-condensing humidity, and meets ETSI and NEBS Level 3 requirements.
How can I troubleshoot common issues with the ESR-8E3/DS3?
Use built-in diagnostics to check line status, error counters, perform loopback tests, and review system logs for detailed fault analysis.
What differentiates the ESR-8E3/DS3 from channelized E3/DS3 cards?
Unlike channelized cards, it provides clear channel connectivity with full-bandwidth transmission on each port, reducing latency and simplifying configuration.
How do I purchase and check the availability of the ESR-8E3/DS3?
Contact authorized distributors or visit our online portal with SKU ESR-8E3/DS3 for real-time stock levels, pricing, and procurement details.
Can I upgrade the firmware on the ESR-8E3/DS3 line card?
Yes, firmware upgrades are available via the network management system or CLI; download the latest image from the support portal and follow the upgrade guide.