Telecom has a secretary 100. What exactly does the change notice mean in this line?

When changing the mobile phone number of, after using the new mobile phone number registration number 100 for secretarial service, manually change the number through11814, and the original mobile phone number will be transferred to the number 100 secretarial platform. When a phone calls the original number, the system will inform the caller of the change of the number and connect the new number at the same time. If the calling number is C network, the mobile phone will receive a short message. The phone number of the dialed friend has been changed to: 189xxxxx, please update it in time. "Need to be reminded: the old number must be in a non-stop state. Broadband on demand, fast thinking. The official account of China Telecom's Guizhou customer service WeChat can directly handle the keyword "Broadband on demand", which is convenient and fast. Customer service 38 answers for you.