Panasonic KX-TD500 - Manual (Page 112)

System
112 Programming Guide
2.8.5 System Option 5
Used to assign System Option parameters (No. 50 - No. 60).
Parameter 50. Dial / Ringback tone frequency
Default Normal
Value Range 1. Normal
2. Distinctive
Description/Function Specifies the frequency of dial / ringback tone.
Reference • 1.13 Audible Tone Features (F/G)
– Dial Tones, Distinctive
• 5.4 What is This Tone? (U/M)