Cisco SPA8800 IP Telephony Gateway 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. The Cisco SPA8800 is an affordable IP telephony gateway solution that is ideal for small business environments that have VoIP service and also require a connection to the public switched telephone network (PSTN).