To configure supplementary services parameters:
1.
Open the Supplementary Services page (Configuration tab > VoIP menu > GW and
IP to IP submenu > DTMF & Supplementary submenu > Supplementary Services).
2.
Configure the parameters as required.
3.
Click Submit to apply your changes, or click the Subscribe to MWI or Unsubscribe
to MWI buttons to save your changes and to subscribe / unsubscribe to the MWI
server.
4.
To save the changes to flash memory, see 'Saving Configuration' on page 324.
User's Manual
244
MP-11x & MP-124
Document #: LTRT-65422