Call waiting
When you subscribe to call waiting service from your telephone service provider, you hear an alert tone if there is an incoming call while you are on another call.
•Press 
/FLASH to put the current call on hold and take the new call.
•Press 
/FLASH at any time to switch back and forth between calls.
Temporary ringer silencing
When the telephone is ringing, you can temporarily silence the ringer of the handset without disconnecting the call. The next call rings normally at the preset volume.
•To silence the handset ringer, press OFF/CANCEL or MUTE/DELETE on the handset. RINGER MUTED and 
display.
Temporary tone dialing
If you have pulse (rotary) service only, you can switch from pulse to tone dialing temporarily during a call.
. During a call, press TONE
.
2.Use the dialing keys to enter the relevant number. The telephone sends
3.The telephone automatically returns to pulse dialing mode after you end the call.
Find handset
Use this feature to find all system handsets.
To start paging:
•Press 
/FIND HANDSET on the telephone base once and then release. All idle handsets ring and their screens show ** PAGING **.
To end paging:
•Press 
/FIND HANDSET again on the telephone base once and then release.
•Press 
/FLASH, 
or any dialing key 
or #) on the handset.
•Place the handset in the telephone base or charger.
Do not press and hold 
/FIND HANDSET for more than four seconds. It may lead to handset deregistration. If 1.PRESS FIND HS ON BASE 4 SEC and 2.THEN PRESS # ON HANDSET display alternately on the handset, refer to Troubleshooting to register the handset to the telephone base.
Redial list
Each handset stores the last 10 telephone numbers dialed.
To review and dial a number from the redial list:
. Press REDIAL/PAUSE when the handset is not in use.
2.Press 
, 
, or REDIAL/PAUSE repeatedly until the desired entry displays.
3.Press 
/FLASH to dial.
To delete a redial entry:
When the desired redial entry displays, press MUTE/DELETE.
Join a call in progress
You can use up to two system handsets at a time on an outside call. You can buy additional expansion handsets (CS6409) for this telephone base. You can register up to five handsets to the telephone base.
•When a handset is on a call, press 
/FLASH or 
on another handset to join the call.
•Press OFF/CANCEL to exit the call. The call continues until all handsets hang up.
Intercom
Use the intercom features for conversations between two handsets.
. Press INT on your handset when it is not in use. When you have three or more handsets, use the dialing keys to enter a destination handset number.
2.To answer the intercom call, press 
/FLASH, 
, INT or any dialing key 
, #) on the destination handset.
3.To end an intercom call, press OFF/CANCEL or place the handset back in the telephone base or charger.