United States$5,000,000+
Inventory Delivered By
E
Evan Mitchell
5
ISDN BRI module delivered stable connectivity.
NM-4B-S/T
4Port ISDNBRI Network Module Cisco Router Network Module
FEATURED DEAL
Name:
NM-4B-S/T
- Description:
- 4Port ISDNBRI Network Module Cisco Router Network Module
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 818217063721
- Condition:
3 Year Extended Warranty
Same-day Shipping
14-Day Money Back Guarantee
Shipping:
Payment:
3 Year Extended Warranty
Same-day Shipping
14-Day Money Back Guarantee
Need Additional Discount on Product?
Request a quote below - Get Exclusive Pricing and Support.
Shipping:
Payment:
TRUSTED, TRIED, PROVEN
Officially Accredited
& Verified By
Next-Gen IT
Solutions Powered By
NM-4B-S/T Overview
NM-4B-S/T is a high-performance Ethernet module designed for robust enterprise networking solutions. It features four integrated RJ-45 ports that support data rates of up to 1Gbps per port, and it seamlessly integrates with routers, switches, and servers using standardized TCP/IP and UDP protocols.
NM-4B-S/T is built with a PCIe form factor for easy installation and reliable performance in data centers and enterprise environments. Its optimized design ensures efficient network connectivity for expanding infrastructure capacity, upgrading server interfaces, and connecting to high-speed networks.
NM-4B-S/T price is is available on request. Get immediate quote.
Request bulk order quote for NM-4B-S/T for additional pricing. Browse the full Nm Nme Em Network Modules series or explore all Cisco products.
NM-4B-S/T Specifications
- Product Type
- Network Module / Network Card
- Module Type
- Ethernet
- Data Rate
- 1Gbps
- Connector Type
- RJ-45
- Supported Protocols
- TCP/IP, UDP
- Form Factor
- PCIe
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Routers, Switches, Servers
- Max Speed
- 1Gbps
- Supported Features
- Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS
- Power Consumption
- N/A
- Interface Ports
- Ethernet
- Expansion Slots
- N/A
- Product Name
- NM-4B-S/T
- Height
- N/A
- Width
- N/A
- Depth
- N/A
- Weight
- N/A
NM-4B-S/T Use Case
High-Availability WAN Backup for Financial Trading Platforms
In a global financial services firm, the Cisco NM-4B-S/T-4Port ISDN BRI Network Module in ISR routers provides a dedicated ISDN BRI backup link for mission-critical trading systems. Automated MLPPP failover delivers sub-second switchover on MPLS or broadband outages, ensuring uninterrupted order execution and market data access. Outcome: Achieves 99.999% uptime, prevents revenue loss during connectivity disruptions, and upholds regulatory SLAs.
Cost-Effective Branch Office Voice and Data Convergence
A nationwide retail chain deploys the NM-4B-S/T-4Port ISDN BRI Module on Cisco routers at 200 remote outlets to unify PBX voice trunks and data backup on a single platform. Centralized Cisco IOS management and ISDN BRI integration reduce hardware footprint by 30% and simplify WAN operations. Outcome: Streamlines branch deployments in under two weeks, lowers OPEX, and enhances network reliability.
Secure Emergency Call Routing for Healthcare Networks
A regional hospital network leverages the Cisco NM-4B-S/T-4Port ISDN BRI Module to establish resilient PSTN voice channels for emergency services. Integrated with Cisco Unified Communications, it provides encrypted call paths and rapid dial-tone failover when IP links degrade. Outcome: Ensures fail-safe emergency call delivery, safeguards patient safety, and aligns with healthcare compliance standards.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 NM-4B-S/T |  EM2-HDA-4FXO |  NM-HD-2V |  SM-D-ES3G-48-P |  NME-X-23ES-1G | |
|---|---|---|---|---|---|
| Product Type | Network Module / Network Card | WAN Module | Network Module / Network Card | Network Module | Ethernet Module |
| Module Type | Ethernet | FXO Analog Telephony | Ethernet | Ethernet | Ethernet |
| Data Rate | 1Gbps | N/A | 10Gbps | 1Gbps | 1G |
| Connector Type | RJ-45 | RJ-11 | SFP+ | RJ-45 | RJ-45 |
| Supported Protocols | TCP/IP, UDP | SIP / SS7 | TCP/IP | TCP/IP | TCP/IP |
| Form Factor | PCIe | Modular | PCIe | Modular | PCIe |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Compatibility | Routers, Switches, Servers | Cisco / Juniper / Dell | Cisco / Juniper / Arista | Cisco, Juniper, Arista, Dell, HP | Cisco / Juniper / Arista / Dell / HP |
| Max Speed | 1Gbps | N/A | 10Gbps | 1Gbps | 1Gbps |
| Supported Features | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Echo Cancellation / Caller ID / Call Waiting | Auto-negotiation / Wake-on-LAN / Jumbo Frames / QoS | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Auto-negotiation / Wake-on-LAN / Jumbo Frames |
| Power Consumption | N/A | N/A | 15W | 45W | 5W |
| Interface Ports | Ethernet | FXO | SFP+ | Ethernet | Ethernet |
| Expansion Slots | N/A | NIM | NIM | N/A | N/A |
| Product Name | NM-4B-S/T | EM2-HDA-4FXO | NM-HD-2V | SM-D-ES3G-48-P | NME-X-23ES-1G |
| Height | N/A | N/A | 1.2 inches | N/A | N/A |
| Width | N/A | N/A | 4.7 inches | N/A | N/A |
| Depth | N/A | N/A | 0.8 inches | N/A | N/A |
| Weight | N/A | N/A | 1.5 lbs | N/A | N/A |
Reviews & Ratings
H
Hooria Latif
4
Clear signaling and reliable operation.
J
Jan Kowalski
5
Installed easily and worked as expected.
D
Daphne Ross
3
Good choice for legacy ISDN needs.
B
Bilal Ahmad
4
Dependable Cisco module.
Questions & Answers
What is the Cisco NM-4B-S/T 4-Port ISDN BRI Network Module?
The NM-4B-S/T is a Cisco router interface module that delivers four ISDN BRI ports for integrated voice and data services on supported Cisco platforms.
Which Cisco routers support the NM-4B-S/T 4-Port ISDN BRI module?
The NM-4B-S/T is compatible with Cisco Integrated Services Routers such as the 1800, 2800 and 3800 series, as well as legacy 2600, 3600 and 3700 platforms.
How do I install the NM-4B-S/T on my Cisco router?
Power down the router, remove the blank faceplate, insert the NM-4B-S/T into an available network module slot, secure with captive screws, and then power the router up.
What key features does the 4-Port ISDN BRI Network Module offer?
It provides four independent 2-B+D channels, hardware NT/TE switching, QoS support, and low-latency voice/data integration over a single module.