Phone number display v620/600i

Is there any way to display phone numbers to the format

AAA-PPP-NNNN

rather than

AAAPPPNNNN ?

My v600's both place hyphens between the area code,number prefix, and
final four digits and apparently as the default display.

v620/v600i do not add hyphens.

I find no reference to this in either User Manual.

TIA
Matthew Marsh

or as my v600i would have it ...
matthewmarsh.