What should I do if the landline records abnormal downtime?

Go to the business hall for recovery. According to the question and answer, the abnormal record downtime of the landline is caused by the arrears of telephone bills. You can bring the original ID card of the owner to the service outlets of nearby operators for recovery. Fixed telephone, commonly known as landline, refers to a fixed telephone in a certain position, which is different from mobile phones and is mostly used in enterprises.