Cisco SM-X-PVDM-500 Voice DSP Module for ISR 4000

What It Is

The Cisco SM-X-PVDM-500 is a high-capacity Packet Voice/Fax Digital Signal Processor (DSP) module designed for the Cisco 4000 Series Integrated Services Routers (ISR). This module provides up to 768 channels of voice and fax processing, enabling dense voice gateway functionality within enterprise networks.

Technical Details

• Channel Capacity: Up to 768-channel DSP processing for voice and fax services
• Form Factor: SM-X (Service Module) slot compatibility for Cisco 4xxx family routers
• Module Type: Packet Voice/Fax DSP Module
• Function: Handles voice codec conversion, echo cancellation, and fax relay operations
• Integration: Directly mounts into designated service module slots on supported ISR platforms
• Compatibility: Specifically engineered for the Cisco 4xxx series integrated services routers

Configuration & Options

• Available as a standalone module (SM-X-PVDM-500) for deployment in supported router chassis
• Requires a compatible Cisco 4000 Series ISR platform with an available SM-X slot
• PVDM2-ADPTR= adapter may be used for legacy PVDM2 module compatibility in PVDM slots on Cisco 2900 and 3900 Series ISR (if applicable to deployment)
• Module is ordered separately from the host router; no additional DSP mezzanine cards required

Operating Conditions

The module is deployed in enterprise edge or branch office environments where high-density voice trunking is required, such as SIP trunking or TDM-to-IP gateway implementations. It operates within the Cisco 4000 Series ISR chassis, which is designed for controlled indoor environments with standard temperature and humidity ranges typical of network equipment rooms. It is suitable for 24/7 continuous operation in carrier-grade or enterprise data communication facilities.