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.
When you pick up the handset, your main extension is automatically activated, ready for you to make a call. The M2006 can have only one extension number. Dial the number. Rls is especially useful for disconnecting handsfree calls. Dial number to be stored and press speed call key again.