If the phone number is blacklisted by the other party, what are the voice prompts? How can we be sure? urgent

If the phone number is blacklisted by the other party, there will be some voice prompts as follows:

Generally, there is a boot sound close to 1 s first, and then it immediately becomes:

(1) The line you dialed is busy.

(2) The subscriber you dialed is temporarily unavailable.

This is hacked by the other party.

Extended data:

This is an advanced phone and SMS filtering tool. Its rich and powerful functions can manage unwanted phone calls and text messages. Up to now, there are more than 250,000 users worldwide.

Block options:

Number of landline calls/text messages

Unknown number of landline phone/SMS and private number (no number, no caller ID)

Incoming calls automatically intercept all SMS replies (that is, you can't answer the phone)

Turn off the bell, hang up (it may be sent to voice mail), and then pick up the hang up.

Baidu Encyclopedia: Phone Blacklist