SM-X-8FXS/12FXO - Cisco 4000 Series ISRs Service Module Overview
SM-X-8FXS/12FXO - Cisco 4000 Series ISRs Service Module is a genuine modular capacity expansion product from Cisco, a leading enterprise networking vendor whose Catalyst, Nexus and ISR families power campus, data-center and branch networks worldwide. Belonging to the Cisco 4000 Series family, the SM-X-8FXS/12FXO unit is built to the original factory specification, so it integrates with existing Cisco deployments predictably and behaves exactly as the platform documentation describes. In the network, it is deployed as a standalone unit or as part of a larger managed network, following the standard operating procedures of the platform.
From a specification standpoint, it offers 8 ports for client, server or uplink connectivity. These are the original factory figures for this model, giving administrators a clear picture of what the unit can deliver before it enters service. Standard mounting, cabling and management practices apply, so deployment follows the same procedures as other Cisco hardware already running in the environment.
Typical deployments include adding ports and performance to existing chassis systems, modernizing legacy platforms with compatible line cards, and mixing copper, fiber and high-speed uplinks in one chassis. Organizations commonly source it for refresh programs, capacity expansion and spares management, keeping a tested unit on hand so outages stay short and replacements are predictable. The factory detail for this unit reads: “8-port FXS and 12-port FXO single-wide service module”. This makes it a practical choice when original-spec hardware is required at a predictable cost.
Every unit at LinkNewNet is inspected and tested before dispatch, and stock is graded, cleaned and verified for correct operation, including port status, console access and firmware state. Our warranty coverage and responsive technical support protect the purchase after it arrives, and our team can confirm revision levels and software compatibility before you order. For volume requirements we also offer configuration checks and staged delivery options.
Contact our sales team for current availability, lead time and shipping options for the SM-X-8FXS/12FXO. We respond quickly with stock status and a firm quote, so you can plan the refresh or expansion with confidence.
Key Specifications
Applications
Enterprise WAN
Branch and campus routing with advanced services.
Service Provider
Edge routing for ISP and MPLS deployments.
Data Center
Interconnect core and aggregation layers reliably.
Buying a Pre-Owned SM-X-8FXS/12FXO
Verify the unit is tested, firmware confirmed, and condition documented. Every unit is fully tested and warranty covered. Contact our team for current stock and availability.
SM-X-8FXS/12FXO Specifications | |
| Model | SM-X-8FXS/12FXO |
| Ports | 8-port FXS and 12-port FXO |
| Service Module Type | Single-wide service module |
| Compatibility | Cisco 4000 Series Integrated Services Routers |
| Signaling | FXS (Foreign Exchange Station), FXO (Foreign Exchange Office) |
| Power Requirement | Powered by the host router |
| Warranty | 1-year limited hardware warranty |
| Noise Immunity | Meets stringent network noise standards |
| Configuration | Managed via Cisco IOS Software |
| LED Indicators | Yes, for power and status |
| Voice Features | Supports analog voice calls |
| Dimensions | 8.57 in. (21.77 cm) x 7.89 in. (20.04 cm) x 1.60 in. (4.06 cm) |
| Humidity | 10% to 85% non-condensing |
| Regulatory Compliance | FCC Part 15 (CFR 47) Class A |
| EMC Standards | EN55022 Class A, EN55024 |
| Safety | UL/CSA 60950-1, IEC 60950-1, EN 60950-1 |
| RoHS | Yes, compliant |
SM-X-8FXS/12FXO - Product Notes
This listing is a specific SKU variant of the SM-X-8FXS/12FXO family. Review the specifications above and confirm compatibility with your existing infrastructure, including software version, mounting, and interface requirements, before ordering.
For volume requirements we offer configuration checks and staged delivery options. Our team can confirm revision levels, software compatibility, and lead time before you place an order.
Every unit at LinkNewNet is inspected and tested before dispatch, and stock is graded, cleaned and verified for correct operation.






