Panasonic KX-TD500 - Manual (Page 75)

System
Programming Guide 75
2.4.2 Trunk Group Setting
Used to specify the trunk group that the extension user can use for making an outside call.
The following screen is shown on the display by clicking button on
"Class of Service" screen.
Parameter ISDN CFU / CFB / CFNR
Default Disable
Value Range 1. Enable
2. Disable
Description/Function Enables or disables the ability of performing "Call Forwarding by
ISDN Line, CFU (Call Forwarding Unconditional) / CFB (Call
Forwarding Busy) / CFNR (Call Forwarding No Reply)" feature.
Reference • 2.5 ISDN Transferring Features (F/G)
– Call Forwarding by ISDN Line
• 2.5.2 Forwarding Your Calls by ISDN (Call Forwarding by ISDN
Provider) (U/M)