Cisco SPA8800 IP Telephony Gateway with 4 FXS and 4 FXO Ports Powered by industry-leading VoIP technology from Cisco, the SPA8800 is designed with a solid hardware casing and contains many standard features, including four RJ-11 FXS and four FXO ports 10/100BASE-T RJ-45 Ethernet interface to connect to either a router or multilayer switch, and an auxiliary port for local administration. The gateway also includes a single multiport RJ-21 50-pin connector, offering an alternative connection choice for FXO and FXS ports when deploying the gateway in varied environments. The SPA8800 features a high level of security by implementing state-of-the-art technologies to provide standards-based encryption protocols. Telephony Interfaces 4 phone (FXS), 4 line (FXO)