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Cisco High-Density Analog Voice Service Module SM-X-8FXS/12FXO - expansion module - FXS x 8 + FXO x 12

Mfg # SM-X-8FXS/12FXO= CDW # 5123885

Quick tech specs

  • Density Analog Voice Service Module SM-X-8FXS/12FXO
  • FXS x 8 + FXO x 12
  • Expansion module
  • for Cisco 4451-X; Integrated Services Router 4331, 4351
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Know your gear

The Cisco High-Density Analog Voice and Fax Service Modules provide enterprises, managed services providers, and service providers the ability to directly connect public-switched telephone networks (PSTNs) and existing telephony equipment to Cisco 4000 Series Integrated Services Routers (ISRs). These fixed-port (FXS and FXO) modules provide Dual-Tone Multifrequency (DTMF) detection, voice compression and decompression, call progress tone generation, Voice Activity Detection (VAD), echo cancellation, and adaptive jitter buffering.

This item was discontinued on July 12, 2024

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