How to trumpet a mobile phone number?

What does the landlord mean by trumpet? Group short code? Or a double number plate (commonly known as the shadow number). If it is a short code, the landlord needs to join a group at the front desk of the mobile business hall, and will naturally assign you a short code. If the landlord is talking about the shadow number service, you can open one to five numbers as needed. Of course, there is a charge. The landlord can send KTYH to 10086 to handle the service, and then select the number according to the feedback information. If you need to use an extension, just dial 12593. If there are more than two secondary numbers, you can define who is the first secondary number, who is turned off and so on through SMS.