NIM-4FXO= - Cisco 4-Port Network Interface Module

Technical Specifications:
- Interface Type: FXO
- Ports: 4 x FXO
- Connectivity Technology: Wired
- Data Link Protocol: FXO
- Data Transfer Rate: 64 Kbps
- Max Transfer Distance: 1.24 miles
- Status Indicators: Link activity, power, status
- Expansion/Connectivity: 4 x FXO - RJ-11
- Compatible Slots: 1 x Expansion Slot
- Dimensions: 7.1 x 7.2 x 1.6 inches
- Weight: 0.62 lbs

Helpful Notes:
- This module is compatible with Cisco 4000 Series Integrated Services Routers and Cisco ISR G2 routers.
- FXO ports are used to connect to analog phone lines.
- This module can be used for voice and fax applications.