Full specification
4-Port FXS/FXS-E/DID Network Interface Module
Compatible with Cisco ISR 4000 and 1000 Series routers
Supports echo cancellation and jitter buffer
Codec support: G.711, G.729, G.723.1, T.38 fax relay
Protocols: SIP, H.323, MGCP
Online insertion and removal (OIR) capable
Dedicated Digital Signal Processor (DSP) for analog voice services
Operating temperature: 0 to 70°C
Storage temperature: -40 to 85°C
