2-port voice network interface module
Interface Type: FXS/DID (Foreign Exchange Station / Direct Inward Dial)
Supports analog phones, fax machines, and modems
Embedded DSP (Digital Signal Processor) for voice services
G.168 echo cancellation compliant
Loop start and ground start signaling support
Online Insertion and Removal (OIR) capable
Dimensions: 20 x 78 x 165 mm (0.8" x 3.1" x 6.5")
Compatible with Cisco 4000, 4300, and 4400 Series ISRs
Requires Cisco IOS XE Software Release 3.13.3 or later
