Cisco SM-X-24FXS-4FXO Voice Fax Module
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Cisco SM-X-24FXS/4FXO Fixed Port High Density Analog Voice New

Availability: In Stock
Part Number#: SM-X-24FXS/4FXO
List Price was: $41269.23
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Short Description:
SM-X-24FXS/4FXO Fixed Port High Density Analog Voice Service Expansion Module for Intrigued Service Router 4000 Series | Made by Cisco | New Factory Sealed
Product Condition:
New Retail Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days
Benefits of Using Service Module

The Cisco SM-X-24FXS/4FXO module is designed to provide high-density analog voice services to a variety of Cisco Integrated Services Routers (ISRs) and the Cisco 4451-X Integrated Services Router. This module offers a number of benefits for organizations that need to support a large number of analog voice connections:

  • High-density analog voice ports: The SM-X-24FXS/4FXO module supports up to 24 analog voice ports (FXS) for connecting analog phones, fax machines, and modems, as well as up to four analog trunk ports (FXO) for connecting to the PSTN.
  • Enhanced voice quality: The module uses advanced voice codecs and hardware-based echo cancellation to ensure high-quality voice calls.
  • Simplified management: The module can be easily managed using Cisco IOS software, which provides a range of tools for configuring and monitoring voice services.
  • Scalability: The module can be used in a variety of Cisco ISRs, providing organizations with a scalable solution for expanding their analog voice capabilities as their needs grow.
  • Cost-effective: The SM-X-24FXS/4FXO module offers a cost-effective solution for supporting analog voice services, as it eliminates the need for separate PBX or key systems.
  • Flexible deployment: The module can be deployed in a variety of environments, including small offices, branch offices, and remote sites.
Security Features and Best Practices

The Cisco SM-X-24FXS/4FXO Fixed Port High Density Analog Voice Service Module is designed to provide high-quality analog voice services for a wide range of enterprise applications. To ensure the security of this module and the voice services it provides, there are several security features and best practices that can be implemented.

  • Access Control: It is important to control who has access to the module and its associated devices. This can be achieved by implementing role-based access control (RBAC) and using strong authentication mechanisms like passwords and two-factor authentication.
  • Firmware Upgrades: Regular firmware upgrades are essential to address security vulnerabilities and improve performance. Cisco provides regular updates for the module, and it is important to follow their recommended upgrade process to ensure the module remains secure.
  • Firewall and Network Segmentation: The module can be protected by implementing a firewall to restrict access to and from it. Network segmentation can also be used to create a separate network for voice traffic, reducing the risk of a data breach.
  • Encryption: The module supports Secure Real-Time Transport Protocol (SRTP) to provide end-to-end encryption for voice traffic. This ensures that voice data remains secure during transmission.
  • Quality of Service (QoS): QoS mechanisms should be implemented to prioritize voice traffic and reduce the risk of voice quality issues. This can be achieved through traffic shaping, bandwidth allocation, and other QoS mechanisms.
  • Monitoring: It is important to monitor the module and voice traffic for any security incidents. This can be achieved through tools like Cisco Prime Infrastructure or third-party network monitoring tools.
Powerful and Reliable

The Cisco SM-X-24FXS/4FXO is a fixed port high-density analog voice service module designed for use in Cisco ISR 4000 series routers. This module provides a cost-effective solution for organizations that require a large number of analog voice ports for their telephony needs.

The SM-X-24FXS/4FXO module supports up to 24 FXS (Foreign Exchange Station) ports and 4 FXO (Foreign Exchange Office) ports. FXS ports are used to connect analog telephones, fax machines, and other analog devices to a VoIP network. FXO ports, on the other hand, are used to connect the VoIP network to the PSTN (Public Switched Telephone Network).

The module supports a range of voice protocols, including SCCP (Skinny Client Control Protocol), SIP (Session Initiation Protocol), and H.323. It also provides advanced voice features, such as caller ID, call waiting, call forwarding, and call transfer.

The SM-X-24FXS/4FXO module is designed for high availability, with support for hot-swappable modules and redundant power supplies. It also provides high-quality voice transmission, with support for G.711, G.723.1, G.729a, and other voice codecs.

In addition to its voice capabilities, the SM-X-24FXS/4FXO module also supports data services, with support for PPP (Point-to-Point Protocol), Multilink PPP, and Frame Relay. This makes it a versatile module that can be used for both voice and data applications.

Main Information about this Cisco SM-X-24FXS/4FXO
  • Manufacturer: Cisco
  • Part Number or SKU # SM-X-24FXS/4FXO
  • Product Type: Service Module- Expansion Module
Technical Information of Voice Module
  • Total Number of Ports: 28
  • Media Type Supported: Twisted Pair
  • Application/Usage: Voice Fax
  • TAA Compliant: No
  • Media Type Supported Twisted Pair

Dimensions & Weight

  • Height: 1.6 Inch
  • Width: 7.4 Inch
  • Depth: 7.6 Inch
  • Weight: 2.21 LBS


  • Compatibility: Cisco 4000 Series ISRs
Product Condition:
New Retail Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days

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30-days to 3 years warranty:

Replacement or refund. In the case of material defects, we will try to replace the product first. The product will be replaced before the expiration of the original warranty. For any failure of hardware, if we cannot process the replacement of the product(s)/model(s), we will refund the original selling/invoiced price. The shipping costs and sales tax, if any, are non-refundable. ALLHDD retains the right to decide whether the item(s) will process for replacement or refund.

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