With an M2006 or M2008 set you will be able to hear the caller, but you must lift the handset in order to speak to that party. An LCD indicator shows the status of the feature assigned to each key. Caller is still on the line. Press Rls key to end to call. Place handset back in cradle.
Call is in speaker phone mode.
LCD indicator flashes. Microphone is turned off while speaker is still on. LCD indicator shows solid arrow. Both microphone and speaker are on. Number is dialed, or without lifting handset, press extension key twice.