Cisco EVM-HD Cisco network interface module

Brand: Cisco | Category: Accessories & Components

SKU: CSC-EVM-HD | Part #: EVM-HD | MPN: EVM-HD

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The Cisco EVM-HD is a high-density voice interface module engineered for organizations running Cisco Integrated Services Router platforms across their branch and regional network hubs. Rather than requiring a complete router upgrade, this Enhanced Voice Module slides into an available network interface module (NIM) slot on Cisco 2800 or 3800 Series ISR equipment, making it a straightforward addition to existing infrastructure without downtime or major capital expenditure. Installation is mechanical—the module mounts flush against the router chassis and locks securely into position—and network engineers typically complete integration in minutes rather than hours. This form factor has made the EVM-HD a practical choice for organizations managing distributed voice gateway deployments across multiple sites; instead of staging new hardware platforms, teams simply order the appropriate daughter card combinations and insert them into available slots on their existing ISR infrastructure.

The architecture of the EVM-HD centers on a dual daughter-card slot design that accepts Cisco's VIC, VIC2, VWIC, and VWIC2 interface cards. This modular approach means that the same physical module can be configured for analog voice (FXS, FXO, E&M interfaces), digital trunking (T1/E1 via VWIC cards), or a mix of both, depending on what the local site requires. Enterprise network teams and voice infrastructure architects appreciate this flexibility because it defers the commitment to a specific voice interface type until the module is actually being deployed on-site. The EVM-HD also includes two DSP module slots that accommodate Cisco PVDM2 series digital signal processors, which handle voice codec transcoding, conferencing, and compression in real time. For organizations running multiple voice protocols—H.323 for legacy VoIP environments, SIP for newer unified communications platforms, MGCP for managed voice services, or SCCP for Cisco Unified Communications Manager deployments—this dual processing capability ensures that voice calls remain clear and latency-free regardless of the protocol in use.

Support for Cisco IOS 12.4T and later releases means the EVM-HD integrates cleanly into networks running modern ISR software stacks. Cisco maintains backward compatibility across these releases, so organizations with older software versions can plan a phased migration rather than facing forced upgrades. The module inherits the regulatory compliance profile of its host ISR platform, meeting FCC, CE, and NEBS requirements, which eliminates additional compliance validation work during procurement. Because the Cisco EVM-HD is genuine Cisco hardware, it qualifies immediately for Cisco Technical Assistance Center (TAC) support and carries the same warranty and maintenance terms as the router chassis itself. This matters significantly in enterprise environments where voice infrastructure sits on the critical path for business operations; a TAC engineer can provide diagnostic guidance within contractual response times rather than requiring third-party troubleshooting or extended downtime windows.

Omnixon Global stocks the Cisco EVM-HD and maintains a supply chain that spans the GCC region, with efficient distribution into India, Pakistan, Bangladesh, and select European markets. Our relationships with Cisco and our logistics partners allow us to ship this module on tight timelines, whether you need it for an urgent branch deployment or as part of a larger ISR refresh program. If you are evaluating voice gateway modernization across your organization's branch network or consolidating voice infrastructure onto fewer platforms, we invite you to submit a request for quotation. Our technical team can advise on daughter card combinations, DSP module sizing, and IOS version compatibility to ensure your purchase aligns with your exact network topology.

Platform Compatibility & Interface Options

• Fits Cisco 2800 and 3800 Series ISR routers via standard NIM slot; no form-factor adapters required
• Dual daughter-card slots support VIC, VIC2, VWIC, and VWIC2 modules for both analog and digital voice interfaces
• Two integrated DSP slots accept Cisco PVDM2 series processors for codec and conferencing tasks
• Supports H.323, SIP, MGCP, and SCCP voice protocols simultaneously on the same module
• T1/E1 digital trunk capability via compatible VWIC cards; FXS, FXO, and E&M analog ports via VIC cards
• Cisco IOS 12.4T and later; operates within ISR voice gateway feature set with no special licensing
• FCC, CE, and NEBS compliance inherited from host router platform