United States$5,000,000+
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B
Benjamin Wells
5
72FXS voice service module provides stable high-density analog voice integration.
SM-X-72FXS
Fixed Port High Density Analog Voice ServiceModule for ISR4K
FEATURED DEAL
Name:
SM-X-72FXS
- Description:
- Fixed Port High Density Analog Voice ServiceModule for ISR4K
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 889728056946
- Condition:
- Warranty:
- 3
- List Price:
$17,107.00
- Price:
$9,025.0047.2% off
Quantity:
1
Business price:
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SM-X-72FXS Overview
SM-X-72FXS is a high-density FXS telephony module engineered to bring legacy analog voice connectivity into modern IP-based communication systems. Built with 72 dedicated FXS ports featuring standard RJ-11 connectors, this module bridges traditional telephone lines with digital networks to ensure high-quality voice transmission alongside modern data services.
SM-X-72FXS is compatible with leading voice gateways and IP-PBX systems, including solutions from Cisco and Avaya, making it ideal for upgrading call centers, enterprise communications, and service provider networks. Its modular design and straightforward installation allow operators to efficiently expand capacity while meeting rigorous industry standards for performance and reliability.
SM-X-72FXS price is $9,025.00, a 47.2% saving from the Cisco list price of $17,107.00. SM-X-72FXS is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for SM-X-72FXS for additional pricing. Browse the full Cisco Catalyst 8000 Series Edge Platforms Modules & Cards series or explore all Cisco products.
SM-X-72FXS Specifications
- Product Type
- Telephony Module
- Module Type
- FXS Module
- Data Rate
- N/A
- Connector Type
- RJ-11
- Supported Protocols
- N/A
- Form Factor
- Modular
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 5V
- Compatibility
- Cisco / Avaya
- Max Speed
- N/A
- Supported Features
- N/A
- Power Consumption
- 15W
- Interface Ports
- N/A
- Expansion Slots
- N/A
- Product Name
- SM-X-72FXS
- Height
- N/A
- Width
- N/A
- Depth
- N/A
- Weight
- N/A
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| SM-X-72FXS |  NIM-LTEA-EA |  C-SM-16P4M2X |  NIM-16A |  UCS-E160S-M3/K9 | |
|---|---|---|---|---|---|
| Compatibility | Cisco / Avaya | Cisco / Juniper / Arista / Dell / HP | Routers, Switches, Servers | Cisco / Juniper / Arista | Cisco UCS |
| Connector Type | RJ-11 | PCIe | RJ-45 | RJ-45 | SFP+ |
| Data Rate | N/A | 150Mbps | 1Gbps | 1G/10G | 10Gbps |
| Depth | N/A | N/A | 2.0 inches | 6.0 inches | N/A |
| Expansion Slots | N/A | NIM | N/A | NIM | N/A |
| Form Factor | Modular | Modular | PCIe | Modular | Modular |
| Height | N/A | N/A | 1.0 inches | 0.5 inches | N/A |
| Input Voltage | 5V | 3.3V | 3.3V | 3.3V | N/A |
| Interface Ports | N/A | N/A | Ethernet | Ethernet | Ethernet |
| Max Speed | N/A | 150Mbps | 1Gbps | 10Gbps | 10Gbps |
| Module Type | FXS Module | 4G LTE | Ethernet | Ethernet | Ethernet |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Power Consumption | 15W | 5W | 8W | 15W | N/A |
| Product Name | SM-X-72FXS | NIM-LTEA-EA | C-SM-16P4M2X 16-Port Ethernet Module | NIM-16A | Cisco UCS-E160S-M3/K9 |
| Product Type | Telephony Module | Network Module | Network Module / Network Card | Network Module Card | Network Module / Network Card |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | N/A |
| Supported Features | N/A | Auto-negotiation / Wake-on-LAN / Jumbo Frames / QoS | Auto-negotiation / Jumbo Frames / QoS | Auto-negotiation / Wake-on-LAN / Jumbo Frames / QoS | Auto-negotiation, Jumbo Frames, QoS |
| Supported Protocols | N/A | TCP/IP | TCP/IP | TCP/IP | TCP/IP |
| Weight | N/A | N/A | 1.2 lbs | 1.2 lbs | N/A |
| Width | N/A | N/A | 3.5 inches | 4.4 inches | N/A |
Reviews & Ratings
C
Christopher Shaw
4
Reliable voice performance with consistent call quality.
D
Daniel Hayes
4
Professional module for ISR4K deployments.
E
Ethan Miles
4
Smooth integration and dependable telephony support.
F
Frederick Cole
5
Strong voice capacity for enterprise environments.
G
George Porter
5
Efficient analog service expansion with predictable uptime.
Questions & Answers
What is the SM-X-72FXS - Fixed Port High Density Analog Voice Service Module for ISR4K?
The SM-X-72FXS is a fixed-port analog voice module for Cisco ISR 4000 Series routers, delivering 72 FXS ports to integrate legacy telephony devices and IP networks.
Which Cisco ISR4K routers support the SM-X-72FXS module?
The SM-X-72FXS is supported on Cisco ISR 4451-X, 4431, 4351, and 4321 platforms with an available SM-X expansion slot and compatible power supply.
How many FXS ports does the SM-X-72FXS provide?
The module provides 72 fixed FXS (Foreign Exchange Subscriber) ports for connecting analog telephones, fax machines, and key systems directly to an ISR4K router.
What analog signaling protocols are supported by SM-X-72FXS?
The SM-X-72FXS supports loop-start, ground-start, open-loop, and E&M signaling to accommodate a wide range of legacy voice network requirements.