UChat integrate with different SMS & Voice provider. for voice, you can choose from Twilio & Signalwire, For SMS, you can choose from Twilio, Signalwire & Message Media.
In our course, we choose Twilio, you can get started with Twilio from the link below(affiliate link)
Please do note, Twilio sandbox/trial account might have some restrictions to use, we suggest using full Twilio account.
After you set up the account, follow the video below to connect SMS & Voice Channel.