The Viking K-1500P-W (Wall) phone features a standard desk configuration with a built-in ringer. The K-1500P-W can be used on an analog PABX station port or standard C. O. line to receive calls. It can also be used with a dedicated ringdown circuit, such as Viking's DLE-200B, to provide cost effective point-to-point communications. If an automatic hot-line dialer is required, the K-1900W-2 (Wall) hot-line phone are available.