Description:

The Cisco NM-HD-2V High Density Voice/Fax Network Module is used in Cisco Integrated Services Routers to provide high-density voice and fax interface support for enterprise telephony and unified communications systems. Commonly installed in branch office routers, VoIP gateways, and enterprise voice networks where multiple analog or digital voice interfaces are required for call processing and fax transmission. Network engineers, telecom technicians, and system integrators use this module for voice network expansion, telephony system upgrades, and replacement of legacy voice interface modules in Cisco router platforms.

Applications:

The Cisco NM-HD-2V module is designed to expand voice and fax capabilities within Cisco routers by providing carrier slots for supported voice interface cards. It is widely used in enterprise VoIP deployments, unified communications systems, and branch office telephony networks where traditional voice services must be integrated with IP-based communication infrastructure. The module enables routers to support analog telephones, fax machines, and other telephony equipment, allowing organizations to maintain reliable voice communication while transitioning to modern IP telephony systems.

Technical Specifications:

• Manufacturer Part Number (MPN): NM-HD-2V
• Product Type: High Density Voice/Fax Network Module
• Carrier Slots: 2 × High Density Voice Interface Card (VIC) slots
• Supported Modules: VIC and VWIC voice interface cards
• Compatible Platforms: Cisco Integrated Services Routers
• Voice Support: Analog and digital voice interface modules
• Telephony Features: Voice gateway and fax support
• Installation Type: Internal router network module
• Management: Configured and managed through Cisco IOS
• Application: Voice and fax integration for enterprise routers
• Operating Temperature Range: 0 °C to 40 °C

Common Replacements:

• Cisco NM-HDV2-2T1/E1 Voice Network Module
• Cisco PVDM3-64 Voice DSP Module
• Cisco NIM-4FXS Voice Interface Module