- 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 patible 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 ining calls)- Programmable security code to enter programming mode- Touch tone programmable - K-1900-6 fits standard 500 554 2500 and 2554 set phonesVKK1900D2ASH