NethVoice CTI voicemail management

[Amygos]

On NethVoice CTI I must manage my voicemail if it is active:

• list all messages
• listen to every messages
• download every message
• delete every message or all messages
• notification when receiving a new message
• manage personal greeting messages by recording (physical o web phone) or uploading:
  - Unavailable message
  - busy message
  - name message
  - temporary greeting
  if possible, give the possibility to return to the default configuration.

https://www.striker24x7.com/2012/02/custom-voicemail-greetings-in-asterisk.html#:~:text=Asterisk%20Custom%20Voicemail%20Greeting&text=From%20the%20particular%20extension%20dial,for%20the%20advance%20Mailbox%20Options.&text=Note%3A,like%20freepbx%2C%20elastix%2C%20issabel.

[andrea-marchionni]

Manage the URL in the voicemail body

[andrea-marchionni]

Add display of text from voicemail audio via NethAI #7248