A provided method for processing a voice call includes: loading CAP operation libraries and algorithms of camel1 and camel2 to a service creation environment version of camel3; identifying a network type of camel and determining whether to modify IDP parameters according to the identified network type; triggering a service of a camel3 network type; the service identifying a network type of camel, in which a current call is located, based on an event number and IDP parameters; invoking, according to the identified network type of 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. By applying the solution, it is not required to update service products to be adaptive to the network type.