Original NIM-2FXS Cisco Network Module 4000 Series 2-Port FXS Interface Module
Product Information
Since the fourth-generation Cisco NIMs have their own DSP to support voice, there is no need to synchronize the clock to the backplane, and the clock-participate command is not supported in the BRI, FXO/FXS, and E/M NIMs. The NIMs support:
- 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
- Dual-tone multifrequency (DTMF) detection
- Echo cancellation
- Voice activity detection
- Comfort noise generatio
- Real-Time Control Protocol (RTCP)
- Acoustic shock protection
- Noise reduction is on the roadmap
- Real-Time Transport Protocol (RTP)
- RFC 4733 Digit Relay
The FXS features include:
- Capable of supporting either FXS or DID functionality
- Configurable long loop ports
- Message waiting indicator (MWI)
- Cable detection
Table 1 Quick Spec.
| Product Number | NIM-2FXS/4FXO |
| Product Description | 2-Port FXS/FXS-E/DID and 4-Port FXO Network Interface Module |
| Number of Ports | 2 |
| Cisco IOS Release | XE3.14.3, XE3.15.1, XE3.16 and above |
| Weight | 0.52 lb (236 g) |
Table 2 shows the comparison between NIM-2FXS/4FXO and NIM-2FXS.
| Product Number | NIM-2FXS/4FXO | NIM-2FXS |
| Product Description | 2-Port FXS/FXS-E/DID and 4-Port FXO Network Interface Module | 2-Port Network Interface Module - FXS, FXS-E and DID |
| Number of Ports | 6 | 2 |
| Cisco IOS Release | XE3.14.3, XE3.15.1, XE3.16 and above | XE3.13.4, XE3.14.3, XE3.15.1, XE3.16 and above |
| Weight | 0.52 lb (236 g) | 0.42 lb (191 g) |
Table 3 Cisco FXO and FXS NIM Types and Feature Comparison
| Part Number | Number of Ports | ISR G2 comparison |
| NIM-2FXO | 2 | VIC2-2FXO |
| NIM-4FXO | 4 | VIC2-4FXO |
| NIM-2FXS | 2 | VIC3-2FXS/DID |
| NIM-4FXS | 4 | VIC3-4FXS/DID |
| NIM-2FXS/4FXO | 6 | VIC2-4FXO and VIC3-2FXS/DID |
| NIM-2FXSP* | 2 | VIC3-2FXS/DID |
| NIM-4FXSP* | 4 | VIC3-4FXS/DID |
| NIM-2FXS/4FXOP* | 6 | VIC2-4FXO and VIC3-2FXS/DID |
| NIM-4E/M | 4 | VIC3-2E/M |
| NIM-2BRI-NT/TE | 2 | VIC2-2BRI-NT/TE |
| NIM-4BRI-NT/TE | 4 | VIC2-2BRI-NT/TE |
Related Product
| Product ID | Product Description |
| NIM-2FXO | 2-port Network Interface Module - FXO (Universal) |
| NIM-4E/M | NIM-4E/M 4-port Network Interface Module - FXO (Universal) |
| NIM-2FXS | 2-Port Network Interface Module - FXS, FXS-E and DID |
| NIM-4FXS | 4-Port Network Interface Module - FXS, FXS-E and DID |
| NIM-2FXS/4FXO | 2-Port FXS/FXS-E/DID and 4-Port FXO Network Interface Module |
| NIM-2FXSP | 2-Port Network Interface Module - FXS, FXS-E and DID |
| NIM-4FXSP | 4-Port Network Interface Module - FXS, FXS-E and DID |
| NIM-2FXS/4FXOP | 2-Port FXS/FXS-E/DID and 4-Port FXO Network Interface Module |
| NIM-2BRI-NT/TE | 2-Port BRI Network Interface Module |
| NIM-4BRI-NT/TE | 4-Port BRI Network Interface Module |
Show the appearance of NIM-2FXS.
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