Document 50934 Rev B 5/15/00 PN 50934:B 37Figure 4-2: Handset/Speaker ConnectionBoth Primary andSecondary LinesTo perform a Lamp Test, press MODE then 5267 followed by [ENTER/STORE].This will test all system LEDs. The LEDs will stay on for five seconds, then theADT-UDACT will return to normal mode.☛ 5267 spells LAMP on a Touch-Tone® phone.4.4 Lamp Test ModeUDACTNOT.WMF