1. A method for processing a voice call, comprising the steps on based on a Customized Applications for Mobile Network Enhanced Logic (camel) phase 3 (camel 3 ), loading camel Application Part (CAP) operation libraries and algorithms of a camel phase 1 (camel 1 ) and a camel phase 2 (camel 2 ) to a service creation environment (SCE) version of the camel 3 ; identifying a network type of camel according to an application context of the camel, and determining whether to modify Initial Detection Point (IDP) parameters according to the identified network type; triggering a service of a camel 3 network type; the service identifying a network type of camel, in which a current call is located, based on an event number and EDP parameters; and invoking, according to the identified network type of the camel in which the current call is located, a CAP operation library and an algorithm of a corresponding camel to process parameter information in an IDP, and invoking a signalling of a corresponding network type in subsequent operations.