- Viking outdoor speakerphone with EWP- Provides convenient handsfree communication - Telephone line powered speakerphones designed to provide two way handsfree communication- When call button is pressed. the unit will come off-hook and will remain off-hook until a CPC signal is detected. the programmed timeout has elapsed. a busy signal is detected. or the call goes silent. making the unit automatically disconnect- Can be connected directly toa C.O. line or analog PABX/KSU station when programmed as a ringdown circuit. or used with a Vikinghot-line dialer. If a line or station is not available. Viking's DLE-200B ring down circuit can be used- 1-4 speakerphones can share an existing phone line in a house or small business when used with a Viking C-2000A (respectively) Entry Phone Controller- Enhanced weather protection - Rubber gaskets