Cisco NIM-4FXSP 4-Port Network Interface Expansion Module for 4000 Series Router NIM4FXSP

DESCRIPTION:
The Cisco NIM-4FXSP is a 4-port voice network interface module that provides a combination of FXS and FXO analog telephony ports for Cisco 4000 Series Integrated Services Routers. It enables branch offices to connect analog phones, fax machines, and PSTN lines directly to their ISR routers for voice gateway and unified communications applications. Each port is software configurable as either FXS or FXO, offering deployment flexibility in converged voice and data networks.

TECHNICAL SPECIFICATIONS:
Model Number: NIM-4FXSP
Brand: Cisco
Port Count: 4 analog ports (software configurable as FXS or FXO)
Interface Type: RJ-11
Signaling Support: Loop start, ground start
Compatibility: Cisco ISR 4321, 4331, 4351, 4431, and 4451
Supported Services: Voice, fax, modem over IP
DSP Requirement: Requires PVDM4 DSP module for voice processing
Hot Swappable: No
Form Factor: Network Interface Module (NIM)
Power Source: Provided by router chassis
Operating Temperature: 32°F to 104°F (0°C to 40°C)