\n Cisco PVDM4-32= voice network module\n \n \n \n \n \n \n Manufacturer:\n Cisco\n \n \n Category:\n Networking\n \n \n Sub-Category:\n Voice Network Modules\n \n \n SKU:\n PVDM4-32=\n \n \n EAN:\n 0882658562402\n \n \n \n \n\n Description\n \n \n The Cisco&174; Packet Voice Digital Signal Processor Modules (PVDMs) enable Cisco 4000 Series Integrated Services Routers (ISRs) to provide rich-media capabilities such as high-density voice connectivity, conferencing, transcoding, media optimization, transrating, & secure voice for Cisco Unified Communications solutions. These new modules support unprecedented scale while allowing for a smaller solution footprint than ever before.\n\n\n\n The PVDMs support digital voice connections, conferencing, universal transcoding, & media optimization services:\n\n- T1/E1 voice: One of the primary uses of PVDMs is to packetize digital voice into IP packets to enable time-division multiplexing (TDM) digital voice applications.\n\n- Conferencing: PVDM modules support ad hoc & meet-me conferencing with various codecs in conjunction with Cisco Unified Communications Manager & Cisco Unified Communications Manager Express.\n\n- Universal transcoding: In conjunction with Cisco IOS&174; Software, the PVDMs support universal transcoding, which allows conversion from any supported codec to any other supported codec.\n\n- Transrating: The PVDMs support transrating, in which the same codec is repacketized in order to connect dissimilar networks that have different codec packetization periods.\n\n- Voice-quality management: The PVDMs perform compression, voice-activity detection, jitter management, & echo cancellation. The echo cancellation offered in the PVDMs has a tail length of 128 milliseconds & complies with ITU-T G.168.\n\n- Energy savings: The motherboard PVDMs (PVDM4s) offer multiple power-saving modes, including a power-saver mode when the module is not in use. In power-saver mode, each PVDM4 can save up to 5 watts of power.\n\n\n\n The analog voice modules (FXS, FXO, & E/M) & Basic Rate Interface (BRI) digital voice modules for the 4000 Series ISRs contain built-in, nonconfigurable digital signal processors (DSPs) & do not require any additional PVDMs for voice packetization.\n \n \n\n Specifications\n \n Technical details Compatibility Cisco 4331, Cisco 4351, Cisco 4451 Weight & dimensions Width 51 mm Weight 36 g Height 17 mm Depth 67 mm Operational conditions Operating temperature (T-T)0
- 50 &176;CNetworking Number of voice channels supported (max)32\n \n \n\n\n\n\n\n