Cisco PVDM2-32 Full Official Product Description
1. Part Number & Naming Definition
Official Full Name
Cisco 32-Channel Generation 2 Packet Voice Digital Signal Processor Module
Spare SKU:PVDM2-32=
Naming Breakdown
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PVDM2: Packet Voice Digital Signal Processor Module, Generation 2
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32: Maximum 32 voice/fax media processing channels under low-complexity (G.711) codec configuration
Core Product Positioning
The Cisco PVDM2-32 is an 80-pin SIMM-style pluggable DSP mezzanine daughterboard that delivers dedicated hardware media processing resources for voice-capable Cisco Integrated Services Routers. It handles real-time voice encoding/decoding, fax relay, voice transcoding, and multi-party audio conferencing. Installed directly on router mainboards or NM-HDV2 high-density voice network modules, the PVDM2-32 empowers enterprises to build medium-to-high density branch unified communications gateways, interconnect legacy PBX systems, analog telephones and fax equipment with IP telephony infrastructure, and deploy toll bypass voice services across IP WAN links.
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 modules: NM-HDV2, EVM-HD voice network modules
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Interoperable with Cisco 2900 / 3900 ISR G2 via optionalPVDM2-ADPTRadapter
Unsupported Platforms
Legacy 1700/2600/3600/3700 routers, ISR 4000/9000 series (requires PVDM3/PVDM4), Catalyst switches, original PVDM Gen1 slots (PVDM and PVDM2 are not mutually interchangeable).
Minimum Supported IOS Version
IOS 12.3(8)T; Fully validated IOS releases: 12.4T, 15.0, 15.1, 15.2(4)M
3. Physical & Electrical Specifications
Form Factor
80-pin SIMM pluggable daughter card for dedicated PVDM expansion slots;not hot-swappable(router power cycle required for installation/removal)
DSP Chipset
Dual Texas Instruments TMS320C5510 DSP processors
Channel Capacity by Codec Complexity
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Low Complexity (G.711, Fax Passthrough): Up to 32 channels
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Medium Complexity (G.726, G.729A, G.729AB): Up to 12 channels
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High Complexity (G.729, G.729B, iLBC, G.723.1): Up to 16 channels
Important restriction: All DSP resources on a single voice network module must operate under identical codec complexity mode.
Typical Power Consumption
Environmental Operating 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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Hardware-accelerated voice compression and decompression
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T.38 Fax Relay, Fax Passthrough and Modem Passthrough
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Multi-party audio conferencing bridge resources
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Transcoding between heterogeneous voice codecs for CUCM integration
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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 media streams
Operating Modes
Supports Flexi Complexity, Medium Complexity and High Complexity DSP configuration 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 alarm reporting via SNMP v1/v2c/v3 and Syslog
5. Typical Enterprise Deployment Scenarios
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Medium-to-high density branch VoIP gateway supporting T1/E1 digital PSTN 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 transport for branch office fax devices
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Codec transcoding resources between local PSTN trunks and centralized Cisco Unified Communications Manager clusters
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Local multi-party audio conferencing for remote-site unified communications
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Toll bypass voice connectivity to reduce enterprise 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 PVDM2-32 32-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, with limited ongoing software maintenance support. Recommended migration path: PVDM3 modules for ISR G2 routers or modern ISR 4000 platforms equipped with PVDM4 media DSP modules.
UNSPSC Classification Code
43222608 – Cisco PVDM2-32 32-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-to-high 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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