Learning

Speech Recognition (Speech to Text)

Vosk-API

• Vosk speech recognition modules for Asterisk
• https://alphacephei.com/vosk/integrations  
• Offline Speech to Text for Desktop Linux

Kamailio

• Handling SIP Flood Attacks Using Kamailio

Secure SIP Server

• APIBAN
  • Apiban Clients
  • Block unwanted SIP traffic efficiently

SIP Monitoring

• sipexer - Modern and flexible SIP cli tool

Voice Mail Transcription

• Speech to text using Google Cloud (voicemails to text)
• FreePBX-VM-Transcription
• Free IBM Voicemail Transcription with Incredible PBX 2020