Description: ?- Viking Hotline Phone- Good For Catalog Sales, Information Kiosks In Malls, Courtesy And Customer Service Phones, Automated Tellers, Hot-Line Reservation Phones, Security And Emergency Phones- Telephone Line Powered- Hearing Aid Compatible Amplified Handsets- Rotary Handset Volume Control- 1-32 Digit Programmable Speed Dial Number- Touch Tone And 10/20 Pps Pulse Dialing- Nonvolatile E2 Memory (No Batteries Required)- Restricts Fraudulent Calls From Hand Held Dialers- K-1900D/W-2 Available In Red Or Ash- Optional Q170600 Ringer - Operates On A Co Line Or Analog Pabx/Ksu Extensions- Ring Detection (Will Not Dial On Incoming Calls)- Programmable Security Code To Enter Programming Mode- Touch Tone Programmable - K-1900-6 Fits Standard 500, 554, 2500 And 2554 Set PhonesVkk1900d2ash