Gemini Asterisk PBX Integration

This application allows users to dial any sip extension and ask any question from Gemini

Demo

Test Locally

Clone Repository

git clone https://github.com/aqeelabpro/gemini-asterisk

cd gemini-asterisk

open in your favourite editor or IDE

Prerequisites

• FreePBX installed
• Zoiper/Any other Softphone of your choice(some other popular softphones: linphone, microsip) Installed

Install Zoiper

Goto https://www.zoiper.com/en/voip-softphone/download/current and choose it according to your own OS

Install FreePBX

• Follow The instructions on FreePBX Installation on Ubuntu 22.04/23.04

Steps to configure in FreePBX and Java Application

• Goto Config Edit in the Admin tab in FreePBX(you will have to download config edit module)
• Paste the code provided at the end to the extensions_custom.conf file, and click Save button and the Apply Config button at the top
• create Jar file from this Application and upload to server
• Create a main folder like gemini-asterisk inside your home dir or whereever you want and also create relevant folders and files in the respective folder as described below
• Inside gemini-asterisk folder, create 2 folders, config and bin
• Inside the config folder, create a file application.yml and paste content from this Java Application
• Inside the Same config folder, create another file log4j2.xml and paste log4j2.xml from this Java Application
• You also have to have a google-auth.json or any other name you want the service account key generated inside google cloud and replace its path in the application.yml file, so follow below steps

Google Cloud Account

You will also need a Google Cloud account.

Create a Google Cloud Service Account

Follow the guidelines here, https://cloud.google.com/iam/docs/service-accounts-create#console

Create Google Cloud Service Account Key

Follow the guidelines here, https://cloud.google.com/iam/docs/keys-create-delete

Download All FreePBX modules

• Goto Admin Tab as shown in Figure.1
• Select the Updates from the dropdown as shown in Figure 1.1
• Click The Modules Updates as shown in Figure 1.2
• Click Standard and Extended in there and hit the check online button as shown in Figure 1.2
• You will get the Download All button, Press that button and it will download all modules including the Config Edit module, which we require as shown in Figure 1.2

Add Files to /var/lib/asterisk/sounds/en/

you also have to create two wav files of 8k sample rate called ask_question interrupt-ai and copy them to /var/lib/asterisk/sounds/en/

you can use any text in the files like to ask question wait for beep sound and ask a question and press # after completing your question inside ask-question.wav file and add press any key to interrupt the ai and wait for the beep to ask the question if you don't want an answer to be completed and want to ask other question inside interrupt-ai.wav

Figure 1.1

Figure 1.2

extensions_custom.conf Code

[google-speech]
exten => 111,1,NoOp(============ ${CONTEXT} =============)
exten => 111,n,Set(__AGI_SERVER_IP=127.0.0.1)
exten => 111,n,Set(__AGI_SERVER_PORT=9000)
exten => 111,n,Set(__AGI_SERVER=agi://${AGI_SERVER_IP}:${AGI_SERVER_PORT})
exten => 111,n,Set(__SOUND_FOLDER=/var/lib/asterisk/sounds/en)
exten => 111,n,Set(__LANG_CODE=en-GB)
exten => 111,n,Set(__LANG_NAME=en-GB-Wavenet-F)
exten => 111,n,Goto(record-answer,111,1)

exten => h,1,Goto(grace_fully_hangup,s,1)

[record-answer]
exten => 111,1,NoOp(=========== ${CONTEXT} ===========)
exten => 111,n,Set(__RECORDING_FILE_NAME=${EPOCH})
; ADDED THIS LINE
exten => 111,n,Playback(ask_question&interrupt-ai)
exten => 111,n(record),Record(${SOUND_FOLDER}/${RECORDING_FILE_NAME}:wav,8,300)
exten => 111,n,AGI(${AGI_SERVER}/speechToText.agi)
exten => 111,n,Goto(play-prompt,111,1)

exten => h,1,Goto(grace_fully_hangup,s,1)

[play-prompt]
exten => 111,1,NoOp(=========== ${CONTEXT} ===========)
exten => 111,n,AGI(${AGI_SERVER}/textToSpeech.agi)
exten => 111,n,Wait(1)
exten => 111,n,Background(${SOUND_FOLDER}/${ANSWER_FILE})
exten => 111,n,Goto(record-answer,${EXTEN},record)

exten => _X,1,Goto(record-answer,111,record)

exten => h,1,Goto(grace_fully_hangup,s,1)

[grace_fully_hangup]
exten => s,1,NoOp(=========== ${CONTEXT} ===========)
exten => s,n,StopMonitor()
exten => s,n,Hangup

Asterisk Manager Interface(AMI)

Learn more about AMI at https://docs.asterisk.org/Configuration/Interfaces/Asterisk-Manager-Interface-AMI/

Asterisk Manager Interface(AMI) Libraries in different languages

https://docs.asterisk.org/Configuration/Interfaces/Asterisk-Manager-Interface-AMI/AMI-Libraries-and-Frameworks/