Cisco PVDM2-16 Full Official Product Description
1. Part Number & Naming Definition
Official Full Name
Cisco 16-Channel Generation 2 Packet Voice Digital Signal Processor Module
Spare SKU:PVDM2-16=
Naming Breakdown
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PVDM2: Packet Voice Digital Signal Processor Module, Generation 2
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16: Maximum 16 voice/fax media processing channels under low-complexity codec configuration
Core Product Positioning
The Cisco PVDM2-16 is a pluggable mezzanine DSP daughterboard that delivers dedicated hardware media processing resources for Cisco voice-capable Integrated Services Routers. It handles voice encoding/decoding, fax relay, voice transcoding, and multiparty audio conferencing. Installed on router mainboards or NM-HDV2 voice network modules, the PVDM2-16 enables enterprises to build branch-site unified communications gateways, interconnect traditional PBX, analog telephone and fax equipment with IP telephony infrastructures, and deploy toll bypass voice services across IP WAN connections.
2. Hardware Compatibility & Supported IOS Releases
Supported Router & Module Platforms
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Cisco 2800 Series: 2801, 2811, 2821, 2851
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Cisco 3800 Series: 3825, 3845
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Supported voice network modules: NM-HDV2, EVM-HD series voice modules
Note: Can be used on Cisco 2900/3900 ISR G2 with optional PVDM2-ADPTR adapter
Unsupported Platforms
Legacy 1700/2600/3600/3700 routers, ISR 4000/9000 series (requires PVDM3/PVDM4), Catalyst switches, PVDM generation 1 slots (PVDM and PVDM2 are not interchangeable).
Minimum Supported IOS Version
IOS 12.3(8)T; Fully validated releases: 12.4T, 15.0, 15.1, 15.2(4)M
3. Physical & Electrical Specifications
Form Factor
80-pin SIMM-style pluggable daughter card for dedicated PVDM slots
DSP Chipset
Texas Instruments TMS320C5510 DSP architecture
Channel Capacity by Codec Complexity
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Low Complexity (G.711, Fax Passthrough): Up to 16 channels
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Medium Complexity (G.726, G.729A, G.729AB): Up to 6 channels
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High Complexity (G.729, G.729B, iLBC, G.723.1): Up to 8 channels
All DSPs on one voice network module must operate under identical codec complexity mode.
Typical Power Consumption
Environmental Parameters
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Operating Temperature: 0°C to 40°C (32°F – 104°F)
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Storage Temperature: -40°C to 70°C (-40°F – 158°F)
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Relative Humidity: 5% – 85% non-condensing
4. Supported Codecs & Key Functional Features
Voice Codec Support
G.711a / G.711μ, G.726, G.729A, G.729AB, G.729, G.729B, G.723.1, iLBC
Media Processing Capabilities
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Voice compression and decompression
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T.38 Fax Relay, Fax Passthrough and Modem Passthrough
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Multiparty audio conferencing bridge resources
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Transcoding between heterogeneous voice codecs
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Acoustic echo cancellation, Voice Activity Detection (VAD), Comfort Noise Generation (CNG)
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Dynamic jitter buffer management for real-time voice streams
Operating Modes
Supports Flexi Complexity, Medium Complexity and High Complexity DSP operating modes.
Management & Diagnostics
Full configuration and real-time monitoring via Cisco IOS CLI
DSP resource utilization tracking, DSP firmware upgrade, loopback diagnostics, voice call debugging
Event reporting via SNMP v1/v2c/v3 and Syslog
5. Typical Enterprise Deployment Scenarios
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Medium-density branch VoIP gateway supporting analog lines or digital T1/E1 trunk voice traffic
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SRST (Survivable Remote Site Telephony) deployment for backup voice services during WAN outages
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Medium-volume T.38 Fax over IP services
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Codec transcoding between PSTN trunks and centralized IP telephony clusters
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Local audio conferencing resources for remote-site unified communications
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Toll bypass voice connectivity to reduce PSTN long-distance communication expenses
6. Regulatory & Compliance Certifications
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Safety Standards: UL 60950-1, CSA C22.2 No.60950-1, IEC/EN 60950-1
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EMC Compliance: CE Mark, FCC Part 15 Class A, ICES-003 Class A, VCCI Class A
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Environmental Directives: EU RoHS 2.0 compliant, WEEE compliant
7. Standard Factory Package Contents
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Cisco PVDM2-16 16-channel Generation 2 Packet Voice DSP Module
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Hardware installation guide
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Safety and regulatory documentation
End-of-Life Status
The entire PVDM2 product family has reached Cisco End-of-Sale (EoS). New original hardware production has been discontinued, and limited software maintenance support remains. Recommended migration path: PVDM3 modules for ISR G2 routers or modern ISR 4000 platforms equipped with PVDM4 media modules.
UNSPSC Classification Code
43222608 – Cisco PVDM2-16 16-channel Generation 2 Packet Voice DSP Module for Cisco 2800/3800 series Integrated Services Routers, providing hardware-based voice compression, fax relay, transcoding and conferencing media processing resources for medium-density enterprise branch IP telephony deployments.
Hardware Warranty
Brand-new original modules carry a 1-year limited Cisco factory warranty covering manufacturing defects. Warranty terms for refurbished hardware are subject to reseller contractual agreements.
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