Panasonic KX-TD500 System Reference Manual page 1356

9.07 Checking the Charge Meter–
All CO Lines
Used to check the total charge of all CO lines.
Operation
1. Set Charge Management
Mode.
2. Enter "3".
• To alternate between the rate
and the meter, press SELECT.
To continue the Charge
Management:
3. Press PREV.
To finish the operation:
4. Press END.
Display/Indicator/Tone
• Charge Meter
<Example>
Sum: 00450
Sum: 00099.99DM
Charge Meter
• SYS–PGM No?
Initial Display of PITS Station
Programming Mode
13-C-44
Comment/Note
• Refer to Section 13-C-9.02
"Entering Charge
Management Mode".
• The value of rate is valid only
the last 7 or 8 figures. Refer to
Section 11-C-58.02 "Charge
Rate(RAT)" for further
information.