IBM IBM412 Operation Guide - Page 31

TECHNICAL SPECIFICATIONS Flash Rate for Lights On Steady: Flashing Slowly: Flashing Rapidly: Blink 1: Blink 2: Blink 3: Sound Rate of Intercom Buzzer Ring: Double ring: ICM ring: Transfer ring: ID-error ring: Tones Dial tone: Busy tone: DND tone: Ring back tone Solid light. 1 sec on, 1 sec off, repeatedly. 0.125 sec on, 0.125 sec off, repeatedly. 1.875 sec on, 0.125 sec off, repeatedly. 0.875 sec on, 0.125 sec off, repeatedly. 0.125 sec on, 0.875 sec off, repeatedly. 0.25 sec on. 0.25 sec on, 0.25 sec off, 0.25 sec on, 0.25 sec off. 0.25 sec on, 0.25 sec off, 0.25 sec on, 1.25 sec off, repeatedly. 1 sec on, 1 sec off, repeatedly. 0.25 sec on, 0.25 sec off, repeatedly. Continuous tone. 0.25 sec on, 0.25 sec off, repeatedly. 0.5 sec on, 0.5 sec off, repeatedly. 1 sec on, 1 sec off, repeatedly. 31