Panasonic GD87 - Manual (Page 89)

Enabling Auto Adjustment
From Idle mode:
Repeat to disable Auto Adjustment.
Setting Manual Adjustment
From Idle mode:
Setting Summer Time
From Idle mode:
Once enabled, following the same procedure will disable
Summer Time.
Accessory Related Features
When Auto Answer is switched on, and Personal Handsfree is
connected, a call will be answered without pressing any keys.
Any call waiting should be answered in the normal way.
This is also applicable to the Handsfree Car Kit accessory.
See the documentation provided with the relevant Accessory for
operation details.
Additional Features
91
Additional
Features
Applications > Clock Function >
Clock Set > Away >
Auto Adjustment >
Auto Adjustment
Select time
difference
Applications > Clock Function >
Clock Set > Away > Time Difference
Applications > Clock Function >
Clock Set > Away > Summer Time
Select Enable
or Disable
Select On or Off