Polycom VoiceStation 300 Conference Phone with Built-in Microphone Additional Features: Product Type:Conference Phone Microphone Port:Yes Number of Analog Phone Lines:1 Features:On-hook Dialing Package Contents: VoiceStation 300 Conference Phone Power module 21 ft (6.4 m) cord to console 7 ft. (2.1 m) telco cable to RJ-11 telephone jack User Guide Dimensions: Height:3.0 Width:9.3 Depth:9.5 Weight: 1.25 lb