Cisco NIM-4FXO – 4-Port Foreign Exchange Office (FXO) Voice Network Interface Module
Model Name : NIM-4FXO
Brand : Cisco
Key Features:
- 4 FXO ports for analog trunk (PSTN) connectivity
- Compatible with Cisco ISR 4321, 4331, 4351, 4431, 4451 routers
- Supports voice and fax services through analog lines
- Enables VoIP-to-PSTN and PSTN-to-VoIP call bridging
- Integrated echo cancellation and voice processing features
- Works with Cisco Unified Communications Manager (CUCM) and CME
- Hot-swappable in supported routers
- Reliable solution for hybrid analog/digital voice networks
30 days Warranty
Condition : Refurbished
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- Description
- Specification
- Reviews
Cisco NIM-4FXO is a 4-port FXO (Foreign Exchange Office) Voice Network Interface Module, purpose-built for Cisco ISR 4000 Series routers.
It allows enterprises to connect directly to the Public Switched Telephone Network (PSTN) through analog trunk lines, making it ideal for branch offices, retail outlets, and hybrid VoIP environments.
Each port connects to a standard telephone line, enabling voice calls to route over legacy analog infrastructure.
This module is essential for companies that need fallback PSTN connectivity, cost-effective analog integration, or local emergency call routing.
Frequently Asked Questions (FAQ)
Q1: What is the use of the NIM-4FXO module?
A: It connects analog telephone lines (from PSTN) to Cisco routers, enabling traditional phone line voice communication.
Q2: Is this compatible with digital lines (T1/E1)?
A: No, this module is only for analog FXO lines. For digital T1/E1, consider VWIC or NIM T1/E1 modules.
Q3: Can I use this with Cisco Unified Communications Manager?
A: Yes, it's compatible with CUCM, CME, and SIP gateways.
Q4: Can the ports be used simultaneously?
A: Yes, all four FXO ports can be used concurrently for inbound or outbound analog calls.
Q5: Is a DSP module required?
A: DSPs are needed if you're doing voice processing, transcoding, or conferencing. Some ISR routers include integrated DSPs.
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