Abstract: In order to respond to the national requirements for the remediation of harassment phone call and protect the user’s communication experience, Zhejiang Mobile innovatively proposed the Green Shield personalized harassment phone call prevention service solution, and conducted a pilot on the current network. The service combines the user’s willingness to communicate, the phone number tag information, and the call interception capability of communication network to achieve accurate identification and silent interception of the harassment phone call. It can also support the user’s personalized customization.Thisworkexplores a feasible technical solution for the Chinese operators to rectify the harassment phone call.

Key words: harassment phone call interception, commercial marketing phone call, phonenumbertag, Green Shield