Panasonic KX-TD500 System Reference Manual page 555

4.00 Background Music (BGM)
Description
Background Music can be supplied to any PITS
telephone user in the system through the built-in
speaker of the PITS, when the PITS is on-hook.
An external music source (customer-supplied)
should be connected to the system beforehand.
Lifting the handset or pressing the SP-PHONE
button stops BGM temporarily.
Going back on-hook restarts BGM.
To set and cancel this function, use the same
feature number "1".
While BGM is set, dialing "1" cancels BGM,
reversely it sets BGM when BGM is not set.
To execute this function, connect an external
music source, then set "System-Operation",
External Music Source 1, 2 to "Yes" and set
"Trunk-Pager & Music Source", Music Source-For
Use to either "BGM" or "Hold & BGM".
This setting (BGM or Hold & BGM) is assignable
to each external pager.
Programming
System Programming
"System-Operation (1/3)",
External Music Source 1, 2
"Trunk-Pager & Music Source",
Music Source-Tenant
Music Source-For Use
Conditions
If Tenant Service is employed, the affiliation of the
external pager is determined by the following
system programming.
"Trunk-Pager & Music Source", Music Source-
Tenant.
Reference
VT Dumb
10-D-1.01 11-C-4.00
10-F-2.00 11-C-21.00
4-I-9
Operation
Hearing BGM
1. Dial "1" in on-hook status.
• BGM sounds from the built-in
speaker of PITS.
• If your PITS has a display, it
shows:
BGM On
Canceling BGM
While hearing BGM
1. Dial "1" in on-hook status.
• BGM from the built-in speaker of
PITS stops.
• If your PITS has a display, it
shows:
BGM Off