The Cisco® Fourth-Generation 8-Port T1/E1 Multiflex Trunk Voice and WAN Network Interface Modules (NIMs) NIM-8MFT-T1/E1 supportS data and voice applications on the Cisco 4000 Integrated Services Routers. These cards combine WAN-interface-card (WIC), voice-interface-card (VIC), ISDN Primary Rate Interface (PRI), dial-access integration, and channelized-data (CE1T1) functions to provide superior flexibility, versatility, and investment protection through their many uses. Customers who choose to integrate data and voice in multiple steps preserve their investment in a T1/E1 WAN interface.
The figure shows the appearance of NIM-8MFT-T1/E1.

Table 1 shows the quick spec.
| 
			 Product Number  | 
			
			 NIM-8MFT-T1/E1  | 
		
| 
			 Product Description  | 
			
			 8 port Multi-flex Trunk Voice/Clear-channel Data T1/E1 Module  | 
		
| 
			 Number of Ports  | 
			
			 8  | 
		
| 
			 Dimensions (H x W x D)  | 
			
			 1.25 x 3.50 x 7.24 in. (3.18 x 8.89 x 18.39 cm)  | 
		
| 
			 Weight  | 
			
			 0.52 lb (236g)  | 
		
Table 2 shows the supported devices for the NIM-8MFT-T1/E1.
| 
			 Product number  | 
			
			 Model  | 
			
			 Description  | 
		
| 
			 Cisco ISR 4321 (2GE,2NIM,4G FLASH,4G DRAM,IP Base)  | 
			
			 50Mbps-100Mbps system throughtput, 2 WAN/LAN ports, 1 SFP port, multi-Core CPU,2 NIM, Security, Voice, WAAS, Intelligent WAN, OnePK, AVC  | 
		|
| 
			 Cisco ISR 4331 (2GE,2NIM,1SM,4G FLASH,4G DRAM,IP Base)  | 
			
			 100Mbps-300Mbps system throughtput, 2 WAN/LAN ports, 2 SFP ports, multi-Core CPU,1 service module slots, Security, Voice, WAAS, Intelligrnt WAN, OnePK, AVC  | 
		|
| 
			 Cisco ISR 4351 (3GE,3NIM,2SM,4G FLASH,4G DRAM,IP Base)  | 
			
			 200Mbps-400Mbps system throughtput, 2 WAN/LAN ports, 3 SFP ports, multi-Core CPU,2 service module slots, Security, Voice, WAAS, Intelligrnt WAN, OnePK, AVC  | 
		|
| 
			 Cisco ISR 4431 (4GE,3NIM,8G FLASH,4G DRAM,IP Base)  | 
			
			 500Mbps-1Gbps system throughtput, 4 WAN/LAN ports, 4 SFP ports, multi-Core CPU, Dual-power, Security, Voice, WAAS, Intelligrnt WAN, OnePK, AVC, separate control data and services CPUs  | 
		
Table 3 shows the comparison between NIM-8MFT-T1/E1 and NIM-2CE1T1-PRI.
| 
			 Product Number  | 
			
			 NIM-8MFT-T1/E1  | 
			|
| 
			 Product Description  | 
			
			 8 port Multi-flex Trunk Voice/Clear-channel Data T1/E1 Module  | 
			
			 2 port Multi-flex Trunk Voice/Channelized Data T1/E1 Module  | 
		
| 
			 Number of Ports  | 
			
			 8  | 
			
			 2  | 
		
| 
			 Dimensions (H x W x D)  | 
			
			 1.25 x 3.50 x 7.24 in. (3.18 x 8.89 x 18.39 cm)  | 
			
			 1.25 x 3.50 x 7.24 in. (3.18 x 8.89 x 18.39 cm)  | 
		
| 
			 Weight  | 
			
			 0.52 lb (236g)  | 
			
			 0.42 lb (191g)  | 
		
			NIM-8MFT-T1/E1 Specifications | 
		|
| 
			 Product Number  | 
			
			 NIM-8MFT-T1/E1  | 
		
| 
			 Product Description  | 
			
			 8 port Multi-flex Trunk Voice/Clear-channel Data T1/E1 Module  | 
		
| 
			 Number of Ports  | 
			
			 8  | 
		
| 
			 Clear-Channel Data  | 
			
			 Yes  | 
		
| 
			 MFT Packet Voice  | 
			
			 Yes  | 
		
| 
			 Unstructured E1 (G.703) Support  | 
			
			 No  | 
		
| 
			 Channelized Data  | 
			
			 No  | 
		
| 
			 Dimensions (H x W x D)  | 
			
			 1.25 x 3.50 x 7.24 in. (3.18 x 8.89 x 18.39 cm)  | 
		
| 
			 Weight  | 
			
			 0.52 lb (236g)  | 
		
| 
			 Environmental  | 
			
			 ● Operating temperature: 0 to 50°C (32 to 122°F) ● Storage temperature: -20 to +65°C (-4 to 148°F) ● Relative humidity: 10 to 85% noncondensing operating; 5 to 95% noncondensing, nonoperating  | 
		
| 
			 T1 Compliance (partial list)  | 
			
			 ● TIA-968-A ● CS-03 ● Jate ● ANSI T1.403  | 
		
| 
			 E1 Compliance (partial list)  | 
			
			 ● TBR4, TBR12, and TBR13 ● ITU-T G.703, G.704, G.823, and I.431 ● S016 (Australia)  |