NIM-4MFT-T1/E1 Cisco 4-Port Multiflex Trunk T1/E1 Voice and WAN NIM

The NIM-4MFT-T1/E1 is the Cisco 4-port Multiflex Trunk Voice/Clear-Channel Data T1/E1 module, a fourth-generation T1/E1 voice and WAN network interface module (NIM) for the NIM slot of Cisco 4000 Series Integrated Services Routers. The NIM-4MFT-T1-E1 spelling is the same part. It has four ports with clear-channel data and MFT packet voice, and no unstructured E1 (G.703) or channelized data.

The module supports T1, fractional T1, E1 and fractional E1 for voice and WAN applications at the same time, with a fully managed DSU/CSU for T1 and a fully managed DSU for E1 and drop-and-insert multiplexing. Each port can be clocked from an independent clock source for data. The onboard PVDM4 slot needs a fourth-generation PVDM4 module for voice features, and the PVDM4 provides echo cancellation up to 128 ms.

Per port, the module handles 2 serial data channel-groups, 24 T1 or 31 E1 channel-associated signaling groups, 1 PRI group and 24 T1 or 31 E1 drop-and-insert groups. Data applications need the IP Base technology package, which is included by default, and voice applications need at least the UC package. It requires Cisco IOS XE Software Release 3.9, and DSP farm services need Release 3.11 or above.

The module measures 1.25 x 3.50 x 7.24 in. (3.18 x 8.89 x 18.39 cm) and weighs 0.44 lb (200 g). It is not supported with Cisco 2900 and 3900 Integrated Services Routers. The 4-port HWIC-4T1/E1 and the 4-port third-generation VWIC3-4MFT-T1/E1 have the NIM-4MFT-T1/E1 as their replacement product. Other NIMs are the NIM-2GE-CU-SFP 2-port Gigabit Ethernet NIM and the rest of Cisco interface cards.