Module Specs
- Product: Cisco PVDM4‑64 Voice DSP Module
- Voice Channels: Up to 64 low-complexity; 48 medium; 32 high-complexity
- Slot Type: On-board motherboard or T1/E1 network interface module (NIM)
- Supported Platforms: Cisco 4000 Series ISRs (e.g. 4331, 4351, 4451‑X, 4461)
Part Number:
- PVDM4-64
The Cisco PVDM4‑64 is a high-density voice DSP module offering up to 64 voice channels for low-complexity codec applications, or fewer channels when using more demanding codecs. It supports tasks like packet voice, conferencing, transcoding, and media optimization on Cisco ISR 4000 Series routers.
Installed either directly on the motherboard or within a T1/E1 NIM slot, the PVDM4‑64 frees up the main router CPU by offloading voice processing tasks. It’s compatible across major Cisco ISR platforms and ensures robust performance for unified communications services.