Panasonic KX-TD500 System Reference Manual page 329

Note:
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Programming
Conditions
To utilize BGM, set the usage of music source to "BGM" or "Hold & BGM."
If set to "Hold", other two extensions hear the second dial tone instead of BGM
and will not be able to hear a wake-up message.
(See Section 10-F-2.00 "Pager and Music Source.")
Endless loop OGM
A wake-up message is always played back from the beginning of it to the
extension user when you off-hook to hear a wake-up message.
It is played back repeatedly until the extension goes on-hook.
System Programming
"Special Attended — DISA",
For Use
"System — Operation (1/3)",
External Music Source 1, 2
"Trunk — Pager & Music Source",
Music Source — For use
Music Source — Tenant
The following simplified flowchart shows the treatment of the extension user
who goes off-hook after being alerted by an alarm tone.
Intermittent tone (dial tone 2)
is sent to the extension when
he or she goes off-hook.
Reference
VT
10-I-1.00
10-D-1.01
10-F-2.00
No
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BGM is
assigned?
Yes
BGM is sent to the
extension when he or
she goes off-hook.
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3-F-69
Dumb
11-C-33.00
11-C-4.00
11-C-22.00
Alarm tone is
ringing
Off-hook
No DISA for
wake-up is
assigned?
Yes
No
5
DISA card
"INS"?
Yes
No
OGM resource
is idle?
Yes
Wake-up
message is
sent to the
extension
when he or
she goes off-
hook.
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