SM-X-8FXS/12FXO= Cisco expansion module at discount

SM-X-8FXS/12FXO Specifications

Cisco High-Density Analog Voice Service Module for ISR 4000 Series

Manufacturer: Cisco
Manufacturer Model: SM-X-8FXS/12FXO
Product Line: Cisco ISR 4000 Series Service Modules
Product Series: High-Density Analog Voice Module
Product Type: Single-Wide Voice Service Module
Product Name: Cisco SM-X-8FXS/12FXO Analog Voice Module

KEY FEATURES:
FXS Ports: 8 × analog device ports (phones, fax, modems)
FXO Ports: 12 × PSTN/PBX trunk ports
Connector Type: RJ-21 (typically)
Analog Signaling: Loop-start, ground-start, caller ID
Voice Support: VoIP integration with Cisco IOS and Unified Communications Manager
Audio Codecs: G.711, G.729
Additional Features: Echo cancellation, fax/modem pass-through, FXO failover bypass

PERFORMANCE:
Integration: Connects analog endpoints to IP voice networks
Use Case: Hybrid voice environments for analog-to-VoIP conversion
Management: Configurable via Cisco IOS software
Reliability: Designed for enterprise branch office voice deployments

ENVIRONMENTAL & RELIABILITY:
Operating Environment: Enterprise/branch office routers
MTBF: Manufacturer typical for Cisco ISR modules (enterprise-class reliability)
Operational Use: 24×7 enterprise voice operations

PHYSICAL:
Form Factor: Single-Wide Service Module for ISR 4000 Series
Installation: Plugs into ISR service module slot
Typical Dimensions: Standard Cisco ISR module size
Weight: Approximately 0.5–1 kg