Panasonic KX-TD500 - Manual (Page 92)

System
92 Programming Guide
2.8 System Option
2.8.1 System Option 1
Used to assign system option parameters (No.1 — No.10).
Parameter 1. Sound source during transfer
Default Music on Hold
Value Range 1. Ringback Tone
2. Music on Hold
Description/Function Used to determine whether the system sends "Music on Hold" or
"Ringback Tone" to the party being transferred. "Ringback Tone" is
available when Music on Hold is not provided by the system.
Reference • 1.11 Transferring Features (F/G)
– Call Transfer
• 2.4.3 Transferring a Call (U/M)