BRI Network Interface Voice Network Module NIM-4BRI-NT/TE Cisco 4 Port Durable

Cisco 4-Port BRI Network Interface Module NIM-4BRI-NT/TE= Voice Network Module

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.

The available modules include 2-port and 4-port foreign exchange station (FXS), direct inward dial (DID), foreign exchange office (FXO), a combination of 2-port FXS and 4-port FXO, 4-port ear and mouth (E/M), and 2-port and 4-port basic rate interface (BRI) (Figure 1). The BRI cards support only voice features. The NIMs have a dedicated digital signal processor (DSP) that will be used for time-division multiplexing (TDM) analog voice services. Table 1 lists the available modules.

These NIMs are not supported with the Cisco 2900 and 3900 Series ISRs.

Caller line ID

G.711, G.729a, and G.726

G723 and Internet Speech Audio Codec (iSAC); Internet Low Bit Rate Codec (iLBC) is on the roadmap

Fax detection, pass-through, and relay (T.38)

Modem detection and pass-through

Echo cancellation

Voice activity detection

Comfort noise generation

Real-Time Control Protocol (RTCP)

Acoustic shock protection

Noise reduction is on the roadmap

Real-Time Transport Protocol (RTP)

RFC 4733 Digit Relay