Note: Please be aware that if you are running a SIP Software before UCS 3.3.0 you will need to check the Admin Guide in order to verify the commands.
UCS 4.0.8 added the following:
0 or 1
If 1, a Message Waiting Indicator (MWI) tone plays each time the phone receives an MWI update.
If 0, no MWI tone is played.
NOTE: Future UC Software 5.2.2 > will also include this Parameter !
Notice: This community forum is not an official Poly support resource, thus responses from Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge. If you need immediate and/or official assistance please open a service ticket through your proper support channels. Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's