Cisco SM-X-16-FXS/2FXO Service Module - expansion module

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Product Description Cisco High-Density Analog Voice Service Module SM-X-16-FXS/2FXO - expansion module - FXS x 16 + FXO x 2
Device Type Expansion module
Form Factor Plug-in module
Ports FXS x 16 + FXO x 2
Dimensions (WxDxH) 7.4 in x 7.6 in x 1.6 in
Weight 31.74 oz
Network / Transport Protocol DHCP, DNS, RTP, RTCP
Compliant Standards G.711, G.729a, G.726
Designed For Cisco 4451-X, 4451-X Application Experience, 4451-X Integrated Services Router, 4451-X Integrated Services Router Security Bundle, 4451-X Integrated Services Router Voice and Video Bundle, 4451-X Integrated Services Router Voice Security Bundle; Integrated Services Router 4331, 4351