Call to remind the other party of the phone number, and send a message to show that the other party has received it. What happened?

Can I call this number normally before? If you can't use it temporarily, the other party may set up call forwarding when you make a phone call, and the call on your mobile phone number will go to an empty number. You can try calling another cell phone. Because the short message cannot be forwarded, the other party can receive the short message normally.