Profile: Altigen Communications, Inc. specializes in providing unified communications solutions. Our products include software, servers & gateways and VoIP phones. The MaxCS softswitch is an enterprise class, software-based IP PBX with a scalable distributed architecture that provides resiliency. Executive level SIP-based VoIP phone with a 4 line display, full duplex speakerphone, dual gigabit ethernet ports, built in 802.3af power-over-ethernet support, 15-programmable keys, embedded NAT traversal, 128-bit voice encryption with TLS authentication.