PVDM3‑16U256 Specifications
Cisco Packet Voice Digital Signal Processor Module (PVDM3)
Manufacturer: Cisco
Manufacturer Model: PVDM3‑16U256
Product Line: PVDM3 (3rd-generation Packet Voice DSP)
Product Series: 16 → 256 Channel Factory Upgrade
Product Type: DSP Module (Voice / Media)
Product Name: Cisco PVDM3 16-Channel to 256-Channel Upgrade Module
KEY FEATURES:
Factory upgrade from 16 DSP channels to 256 voice DSP channels
Optimized for rich-media voice applications (conferencing, transcoding, secure voice)
Supports universal transcoding and transrating (codec repacketization)
Echo cancellation with 128 ms tail length, ITU-T G.168 compliant
Power-saving mode when DSP is idle
PERFORMANCE:
Supports a wide variety of codecs:
Low-complexity: G.711, clear-channel, Fax/modem pass-through
Medium-complexity: G.726, G.729a/ab, G.722, Fax Relay
High-complexity: G.728, G.729, iLBC, Modem Relay
Conferencing: supports multiple parties, depending on router platform
ENVIRONMENTAL & RELIABILITY:
Operating Temperature: –5 °C to +55 °C (23 °F to 131 °F)
Voltage: 3.3 V
Power Consumption: ~4.85 W
Form Factor: 240-pin DIMM module
PHYSICAL:
Interface: 240-pin DIMM slot
Weight: ~0.1 kg
COMPATIBILITY & USE CASES:
Supported Platforms: Cisco ISR G2 2900 / 3900 Series routers
Use Cases:
High-density voice deployments
Conferencing and transcoding
Secure voice (VPN + voice)
Media optimization in voice gateways
LIFECYCLE NOTES:
This module is End-of-Life (EOL) per Cisco and has no planned replacement.
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