We can activate SIP for your account and then you can generate a SIP credentials for each agent in your account. To learn exactly how to do that, please read the article Can I use SIP devices with Talkdesk?
You will then be able to use this information to configure a free mobile application like Zoiper. This will allow you to make and even receive phone calls via your mobile; however, it will require Internet Data/3G/4G to function (just like, for example, Skype).
To configure SIP with Zoiper follow the steps below:
Install the Zoiper softphone app on your Android or IOS device:
Open the app and press the 'Config' icon on the top right corner for Android / the Settings icon on the bottom right for IOS. Select the Accounts option:
Click on ‘Add account’.
Click ‘Yes' under 'Do you already have an account (username and password)’ (Android vs IOS view):
Choose ‘Manual Configuration’.
Select SIP (Android vs IOS view):
Fill in the details with the SIP credentials you’ve obtained (Android vs IOS view):
That’s it, your softphone is now ready to make and receive calls!
Note: Also, note that some limitations apply while using SIP devices.