What is an on-hook SMS?

"On-hook SMS" service means that when a mobile phone user dials the fixed phone or mobile phone of the target customer, he will receive a preset SMS from the target customer after not answering or after the call is over. The content of the short message can be enterprise introduction, product introduction, promotion activities, holiday blessing information, policy propaganda, address relocation or telephone number change. , and the content can be modified at any time. It is a brand-new advertising publishing platform carefully built for corporate customers.