DESC: TalkSwitch system comes complete with sophisticated call-handling features that help you look big, reduce communications costs and stay connected everywhere. Multi-level auto attendants, built-in voicemail, innovative remote extensions and more are included. But sophisticated doesn't mean complicated; TalkSwitch is a snap to set up and use. Analog Trunks: 4 Analog Extension Interfaces: 8 Extension Capacity: 16: 8 analog or IP, 8 pure IP USB Interface: 1 LAN Interface: RJ-45 Ethernet (10BaseT) Memory: 2 hours Memory Expansion: 1, 2, 4.5 and 9 hour memory cards Music Input: Phono jack (1/8" mono) or stored .wav file PA Output: Phono jack (1/8" mono) or stored .wav file