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The Cisco PVDM3-256 is a DSP module from Cisco. DSP stands for Digital Signal Processor. These enable high-density voice connectivity within Cisco ISR Router systems.
Cisco PVDM3-256: 256-channel high-density voice DSP module.
NEW Cisco PVDM3-64 64-Channel Packet Video Voice DSP Module
Cisco PVDM3-32 32-Channel Packet Fax / Voice DSP Module
NEW Cisco PVDM2-32 32-Channel Packet Fax / Voice DSP Module