4.When the other handset answers the intercom call, press MENU on the calling handset to set up the conference call.
5.Press 
/BACK on any handset to end a three- party conference call and leave the other handset engaged with the caller.
NOTE
During an external call on the corded base, pressing 
/FLASH or 
/SPEAKER on any cordless handset
will join in the call and set up a conference call.
4.15Setting the dial mode
The default dialing mode is suitable for your country and network operator. It is unlikely that you should need to change this setting unless advised to do so.
1.Press MENU and then VOL+ or REDIAL/VOL- to select SETUP BS.
2.Press MENU to select DIAL MODE.
3.Press MENU and then VOL+ or REDIAL/VOL- to select TONE or PULSE.
4.Press MENU to save.
NOTE
If the pulse mode is selected, press */TONE to switch from pulse to tone dialing temporarily when dialing out. After the call is ended, the dial mode will change back to pulse.
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4.16Setting the flash time
The default flash time is 600MS. It is unlikely that you should need to change this setting unless advised to do so.
1.Press MENU and then VOL+ or REDIAL/VOL- to select SETUP BS.
2.Press MENU and then VOL+ or REDIAL/VOL- to
select FLASH TIME.
3.Press MENU and then VOL+ or REDIAL/VOL- to the flash time you want. (8 options are available :
90, 100, 110, 250, 300, 400, 600 and 700MS)
4.Press MENU to save.
4.17Setting the area code
1.Press MENU and then VOL+ or REDIAL/VOL- to select SETUP BS.
2.Press MENU and then VOL+ or REDIAL/VOL- to
select AREA CODE.
3.Press MENU and then enter the area code.
4.Press MENU to save.
Using the phone