Panasonic KX-TD500 System Reference Manual page 1034

Assigning Items
PBX Access Code (No
Restriction)
PBX Access Code (Restriction)
Max. Dial No. after EFA Signal
Default
blank Host PBX access code
A maximum of three digits composed of numbers
Up to eight codes can be assigned.
blank : not assigning
blank Access codes with restriction
A maximum of three digits composed of numbers
Up to eight codes can be assigned.
blank : not assigning
0 0 : dialing is not acceptable
1 to 32 : maximum dialing digit(s)
10-E-10
Selection of Value
Continued
Reference
3-B-7.04
3-C-1.01
3-C-3.00
3-B-7.04
3-C-1.01
3-C-3.00
3-B-7.04
4-G-9.00
5-E-3.00