Panasonic KX-TD816 Installation Manual page 56

2.3.9 External Music Source Connection
Notes
Programming References
Feature References
• System Programming of music sources used for Music on Hold and
Background Music is required.
• To adjust the sound level of the Music on Hold, use the volume control
on the external music source.
• The KX-TD816BX and KX-TD1232(D)BX/HK/ML/NL/NZ/(D)X
systems are provided with an internal music source. By default setting,
an internal music source is used as Music Source 1 for the systems.
System Programming is required to select external music source for the
systems.
Section 4, System Programming,
[803] Music Source Use
[990] System Additional Information, Field (20)
Section 3, Features,
Background Music (BGM)
Music on Hold
Background Music (BGM) – External
Installation 2-37