NIM-2FXS/4FXO Cisco 2-Port FXS/FXS-E/DID and 4-Port FXO Network Interface Module

The new generation of Cisco FXO/FXS NIMs add improvements over the previous WAN interface cards (VICs and VIC2s). The FXO, FXS, E/M, and BRI NIMs contain an onboard DSP and don’t require the router to have dedicated packet voice DSP module (PVDM) on the motherboard. The DSP on the voice module is necessary for the voice features. It also provides for echo cancellation of up to 128-ms echo-tail length for demanding network conditions.

The FXS features include:
● Capable of supporting either FXS or DID functionality
● Configurable long loop ports
● Message waiting indicator (MWI)
● Cable detection

The FXO features include:
● Supports both ground start and loop start modes
● Provides call detail record (CDR) information
● Support for interworking with Cisco Unified Communications Manager (Skinny Client Control Protocol [SCCP]), H.323, Session Initiation Protocol (SIP) and Media Gateway Control Protocol (MGCP) 1.0
● Cable detectionci
● Overload protection

The Cisco 4000 Series Integrated Services Routers (ISRs) host the Cisco network interface modules (NIMs), which have evolved from the enhanced high-speed WAN interface card (EHWIC), increasing port density and module capability. Up to three integrated NIM slots on the 4000 Series allow for flexible configurations. The NIMs support online insertion and removal (OIR), reducing the downtime required for new or replacement modules.