Some questions about mobile phone text messages

If the "Send Report" is within the same network (133 to 133, mobile to mobile), after sending the text message and the other party successfully receives it, the system will reply with a text message indicating that it has been successfully sent.

The "reply path" should probably refer to the callback number. You can set a number. After the other party receives it, it will display your mobile phone number and the number will be displayed at the same time. It can be different from your own mobile phone number.

"Message retention time" refers to the effective time for sending a text message, and the time the text message is retained on the system when you or the other party cannot send or receive it. For example, if it is set to one hour, if the other party cannot receive it and returns to normal after one hour, it will still be able to receive your text messages. If it exceeds one hour, the system will no longer send it.