TOPIC: how to configure voice broadcast campaign with google TTS in vicidial or goautodial
INTRO:
In this blog i am to show how to create voice broadcast campaign in vicidial with Google text to speech.(an alternate to the cepstral Text to speech.)
Comparing to cepstral ,google voice quality will not be soo good but it will be in satisfied level.
VICIDIAL is a software suite that is designed to interact with the Asterisk Open-Source PBX Phone system to act as a complete inbound/outbound contact center suite with inbound email support as well.
which supports voice broadcast campaign, press 1 survey campaign, and predictive dial campaigns.
Google TTS agi:
Google TTS is open source as of dated jan 2021
We will be using the asterisk agi provided by zaf.github to interact with google tts engine for text to speech .
link to download agi :https://zaf.github.io/asterisk-googletts/
What is Voice Broadcasting?
Voice broadcasting is the ability to communicate and connect with people on a large scale. It can be defined as a mass communication technique that broadcasts telephone messages to hundreds or thousands of call recipients at once.
With voice broadcasting, you can pre-record and send automated voice calls to phone numbers using a centralized system and phone number. It allows the call recipients to listen to the recorded message and interact by pressing keys on their keypad
Steps :
we will following the below steps, as i am using vicibox , the commands are based on open suse OS.
Step 1: Installing the Pre-requisites
zypper install perl
zypper install perl-libwww-perl
zypper install perl-LWP-Protocol-https
zypper install sox
zypper install mpg123
asterisk -rx "module load format_sln"
(note format_sln might be pre loaded in most asterisk)
Step 2: Download the google tts AGI to asterisk server
link: https://zaf.github.io/asterisk-googletts/
git clone git://github.com/zaf/asterisk-googletts
---now we need to copy the agi to asterisk agi-bin folder
cd asterisk-googletts
cp googletts.agi /var/lib/asterisk/agi-bin/
chmod 755 googletts.agi
Step 3: Asterisk dialplan
we need to write two dialplans.
1. carrier dialplan
in default vicidial carrier dialplan , we need to add additional line which is used to set the vicidial lead fields as variable,which we are going use it for text to speech.
the agi name is agi-set_variables.agi provided by vicidial team
exten => _9X.,1,AGI(agi://127.0.0.1:4577/call_log)
exten => _9X.,n,AGI(agi-set_variables.agi)
exten => _9X.,n,Dial(SIP/SIPTRUNK/${EXTEN:1},,Tto)
exten => _9X.,n,Hangup()
2. custom dialplan to playback the message with google tts agi.
Either you can write this dialplan in extensions.conf or write it in vicidial custom dialplan entry
exten => 778899,1,Answer()
exten => 778899,n,Wait(2)
exten => 778899,n,agi(googletts.agi,"hello, mr.${first_name} your credit card due date is ${date_of_birth}",en)
exten => 778899,n,agi(googletts.agi,"if already paid kindly discard this call, have a nice day",en)
exten => 778899,n,Hangup()
Step 3 : Creating Voice broadcast campaign.
For creating the voice broadcast campaign in vicidial kindly check and follow the below link
add the 778899 as line extension in remote agents
STRIKER24X7: how to configure voice broadcast campaign in vicidial or goautodial
ALSO CHECK
VICIDIAL CEPSTRAIL TEXT TO SPEECH
VICIDIAL SCRATCH INSTALLTION
