Making/Answering Calls
R While an outside call is on hold, the
Mute
While mute is turned on, you can hear the other party, but the other party cannot hear you.
Handset
1Press MMUTEN during conversation. R MMUTEN flashes.
2To return to the conversation, press MMUTEN again.
Note:
R MMUTEN is a soft key visible on the handset display during a call.
Base unit
1Press MMUTEN during conversation. R The
2To return to the conversation, press MMUTEN again.
Flash
Handset / 
Base unit
MFLASHN allows you to use the special features of your host PBX such as transferring an extension call, or accessing optional telephone services.
Note:
R To change the flash time, see page 29.
For call waiting or Call Waiting Caller ID service users
To use call waiting or Call Waiting Caller ID, you must first subscribe with your service provider/telephone company. This feature allows you to receive calls while you are already talking on the
phone. If you receive a call while on the phone, you will hear a call waiting tone.
If you subscribe to both Caller ID and Call Waiting with Caller ID services, the 2nd caller’s information is displayed on the handset or base unit that is in use after you hear the call waiting tone.
Handset / 
Base unit*1
*1
1Press MCALL WAITN to answer the 2nd call.
2To switch between calls, press
MCALL WAITN.
Note:
R Please contact your service provider/
telephone company for details and availability of this service in your area.
Temporary tone dialing (for rotary/pulse service users)
You can temporarily switch the dialing mode to tone when you need to access
Handset / 
Base unit*1
*1
Press * (TONE) before entering access numbers which require tone dialing.
Handset clarity booster
This feature can improve sound clarity when the handset is used in an area where there may be interference. During an outside call, this feature is turned on automatically when necessary.
R When this feature is turned on, 
is displayed.
18For assistance, please visit http://www.panasonic.com/help