Built-in Headset Jack Built-in 10/100 Ethernet Switch Full-Duplex Speakerphone MGCP Protocol Supports Wideband, G. 711u/a, and G. 729a codecs
Fixed Feature Keys: Transfer Conference Hold Intercom Redial (history) Voice Mail Options Directory
Audio Controls: Volume Mute
Speakerphone Headset Includes: New Handset Cord New Line Cord Base/Stand