- 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- Op