Cisco PVDM3-256 Module General Features Device Type: Voice DSP module RAM: 512 MB Form Factor: Plug-in module Product Description: Cisco 256-Channel High-Density Packet Voice and Video Digital Signal Processor Module - voice DSP module Designed For: Cisco 2901, 2911, 2921, 2951, 3925, 3925E, 3945, 3945E Device Type: Voice DSP module Form Factor: Plug-in module Connectivity Technology: Wired Compliant Standards: CISPR 22 Class B, CISPR 24, EN 61000-3-2, IEC 60950, EN 61000-3-3, EN55024, EN50082-1, EN55022 Class B, AS/NZS 60950-1, EN 61000-4-4, EN 61000-4-2, EN 61000-4-3, EN 61000-4-6, EN 61000-4-5, EN 61000-4-11, EN 61000-4-8, UL 60950-1, EN 60950-1 Compatible Slots: 1 x expansion slot - DIMM 240-pin Min Operating Temperature: 23 F Max Operating Temperature: 131 F