Overview The Cisco NIM-2FXSP= is a network interface module designed to expand Cisco Integrated Services Routers by adding two foreign exchange station (FXS) or direct inward dial (DID) ports. This module enables the connection of standard telephones, fax machines, paging amplifiers, or modems directly to the router, integrating analog voice devices into an IP network without requiring a separate gateway. Its single-slot plug-in design fits neatly inside the router chassis, saving rack space and simplifying cabling for branch offices and small contact centers transitioning to IP communications. Key features Adds two FXS or DID ports to Cisco ISR 4000 Series routers, expanding analog voice connectivity options. Installs internally within the router, eliminating the need for external gateways and reducing hardware complexity. Supports G.711 and G.729a voice codecs, allowing compatibility with mixed voice environments and efficient bandwidth use. Integrated echo cancellation enhances call clarity by reducing audio feedback during conversations. Remote monitoring and configuration through SNMP enable administrators to manage the module’s status and settings conveniently. Complies with electromagnetic compatibility standards CISPR 22 and EN 55022:2010, ensuring reliable operation in office, campus, and industrial environments. Compatible with multiple Cisco ISR models including 4451-X, 4221, 4321, 4331, 4351, and 4431, providing a flexible upgrade path. Key specs Ports: 2 FXS/DID analog voice ports Supported voice codecs: G.711, G.729a Compatibility: Cisco ISR 4000 Series routers (4451-X, 4221, 4321, 4331, 4351, 4431) Compliance: CISPR 22, EN 55022:2010 electromagnetic compatibility standards Management: SNMP for remote monitoring and configuration Form factor: Single slot plug-in module for router chassis Connectivity and compatibility This module integrates seamlessly with Cisco ISR 4000 Series routers, providing analog voice connectivity without additional external devices. It supports standard telephony equipment such as telephones, fax machines, and modems, making it suitable for environments that require legacy device integration alongside IP communications. The support for common voice codecs ensures compatibility with various network configurations and voice quality requirements. Ideal uses and environments The NIM-2FXSP= is well suited for branch offices, small contact centers, and enterprise environments that need to maintain analog voice services while migrating to IP-based telephony. Its compliance with electromagnetic standards makes it reliable for deployment in office buildings, campuses, and industrial sites. This module is a practical choice for organizations seeking to consolidate hardware, reduce rack space, and simplify voice network management.
