How to add a landline for calling?
Use Twilio or Lead Connector to make calls
Here's how you can set up a landline number for calls and have myCRMSIM manage all your SMS working seamlessly together AND have missed call text back working on the landline as well.
You can also setup your number using verified caller ID in High Level to match the same number that you are using with myCRMSIM to make calls.