The settings required for FXO disconnect on regeneration tone for Panasonic PBX's.

Disconnect cadence for Panasonic PBX model KX-TD1232 in Mexico and Italy.
This may also apply to your region.

x.07 firmware - Enable disconnect on call progress tone in the interface menu.
x.08 and greater - Enable tone detection under interface, supervision menu.

- In regional setting, select custom.

- For busy tone, set the following parameters:

Freq. 1 = 400
Freq. 2 = 400

Cad. 1 = 250
Cad. 2 = 250
Cad. 3 = 250
Cad. 4 = 250

Click OK in regional screen then Save and reboot the MultiVOIP.

Disconnect cadence for Panasonic PBX model TDA.
This may also apply to your region.

x.07 firmware - Enable disconnect on call progress tone in the interface menu.
x.08 and greater - Enable tone detection under interface, supervision menu.

- In regional setting, select custom.

- For busy tone, set the following parameters:

Freq. 1 = 480
Freq. 2 = 620

Cad. 1 = 485
Cad. 2 = 514
Cad. 3 = 485
Cad. 4 = 514

Click OK in regional screen then Save and reboot the MultiVOIP.

We have had another report with a Panasonic customer
in South America who reported that the following also worked.

Freq. 1 = 350
Freq. 2 = 440

Cad. 1 = 250
Cad. 2 = 250
Cad. 3 = 250
Cad. 4 = 250