| voicebot-rt | ||
| extensions.conf | ||
| pjsip.conf | ||
| README.md | ||
asterisk
Installing Dependencies
Before installing Asterisk, you need to update your package lists and install the necessary dependencies. Open your terminal and execute the following commands:
sudo apt update
sudo apt upgrade
sudo apt install -y wget build-essential subversion
Downloading and Installing Asterisk
With the dependencies in place, you can now download and compile Asterisk:
cd /usr/src
sudo wget http://downloads.asterisk.org/pub/telephony/asterisk/asterisk-18-current.tar.gz
sudo tar xvf asterisk-18-current.tar.gz
Change into the extracted directory and install additional required packages:
cd asterisk-18*
sudo contrib/scripts/install_prereq install
Now, proceed to compile and install Asterisk:
sudo ./configure
sudo make menuselect
sudo make
sudo make install
sudo make samples
sudo make config
sudo ldconfig
With Asterisk installed, you can now set up its user and group permissions:
sudo adduser --system --group --no-create-home asterisk
sudo chown -R asterisk:asterisk /etc/asterisk
sudo chown -R asterisk:asterisk /var/{lib,log,spool}/asterisk
sudo chown -R asterisk:asterisk /usr/lib/asterisk
Configuring Asterisk
Editing the main configuration file is the next step. Open it using your favorite text editor:
sudo vim /etc/asterisk/asterisk.conf
Make the necessary changes according to your setup, then start and enable Asterisk at boot:
sudo systemctl start asterisk
sudo systemctl enable asterisk
Ensure that Asterisk is running without issues:
sudo asterisk -vvvr
Setting Up PJSIP Accounts
To handle VoIP calls, you need to set up PJSIP accounts. Edit the pjsip.conf and extensions.conf files:
sudo vim /etc/asterisk/pjsip.conf
sudo vim /etc/asterisk/extensions.conf
Add your SIP users in pjsip.conf and dial plan in extensions.conf.
Google TTS script for Asterisk
You'll need to install the following dependencies:
sudo apt install perl libwww-perl liblwp-protocol-https-perl sox mpg123
Then download the script from the Google TTS repository and place it in the appropriate directory:
https://github.com/zaf/asterisk-googletts
Voice-rt
Asterisk VoiceBot Realtime is a Node.js application that utilizes Asterisk for real-time audio transmission and processing. This application leverages Google Cloud Speech-to-Text, Google Cloud Text-to-Speech, and OpenAI for transcription, speech synthesis, and intelligent response generation.
Asterisk VoiceBot Realtime connects to a TCP server and handles audio data packets sent by Asterisk through the AudioSocket module. Upon receiving audio data, the application transcribes it using Google Cloud Speech-to-Text, sends the transcription to OpenAI for generating a response, and finally synthesizes the response into audio using Google Cloud Text-to-Speech. The generated audio is then sent back to the client through the socket.