Panasonic LX-TD500 Programming Manual page 164

Group
3.2.2 Trunk Group 2/2
Used to assign parameters for each trunk group. Up to 48 trunk groups can be created in the
system.
Parameter
Default
Value Range
Description/Function
Reference
164
ISDN Progress Tone Mode
Automatic
1.
Automatic
2.
Network
3.
PBX
Selects the way to supply the progress tone to an extension when
the extension user makes an outgoing call via ISDN.
1.
Automatic:
If the network provides a progress tone, the system sends the
network progress tone to the caller. If not, the system sends the
PBX progress tone.
2.
Network:
The system sends the network progress tone to the caller under
all conditions.
3.
PBX:
The system sends the PBX progress tone to the caller under all
conditions.
None
Programming Guide