CISCO - Fixed Port High Density Analog Voice ServiceModule for ISR4K

An expansion module for Cisco 4000 Series Integrated Services Routers with 8 FXS and 12 FXO ports. Provides DTMF detection, voice compression and decompression, call progress tone generation, Voice Activity Detection (VAD), echo cancellation, and adaptive jitter buffering.

Single-wide service module 8 FXS (Foreign Exchange Station) ports for analog endpoints 12 FXO (Foreign Exchange Office) ports for PSTN connectivity Expansion module for Cisco ISR 4000 Series routers Compatible with Cisco 4451-X, 4331, 4351, 4401, 4451, and Catalyst 8300 platforms Voice compression and decompression DTMF detection Call progress tone generation Voice Activity Detection (VAD) Echo cancellation Adaptive jitter buffering Dual-tone multifrequency support