Polycom VVX 501 Corded Business Media Phone System - 12 Line PoE - 2200-48500-025 - AC Adapter (Included) - Replaces VVX 500<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Desktop VoIP Conference Phone - High Definition Audio Technology -Voice Over Internet Protocol (VoIP) - Session Initiation Protocol (SIP) - HTML5 Browser</li><li>12-Line Operation -Caller ID -Acoustic Clarity Technology -Hearing Aid Compatible</li><li>Speakerphone - Dual-Port Gigabit Ethernet Switch -ADA Volume Control Compliant</li><li>3-Way Conferencing - USB Port - Call Forwarding - Remote Missed Call Notification</li><li>Adjustable Ringer/Volume Control - Call Transfer - One-Touch Speed Dial - One-Touch Redial</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41kZnVsJACL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/410czasv4cL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41BcYZelN%2BL.jpg" noproxy>