System and method for transmitting and receiving session initiation protocol messages

[0021]Hereinafter, detailed embodiments of the present disclosure will be described with reference to the accompanying drawings. However, the described embodiments are merely examples and not to be construed as limiting the scope of the present disclosure.

[0022]When it is determined that the detailed description of known art related to the present disclosure may obscure the gist of the present disclosure, the detailed description thereof will be omitted. Terminology described below is defined considering functions in the present disclosure and may vary according to a user's or operator's intention or usual practice. Thus, the meanings of the terminology should be interpreted based on the overall context of the present specification.

[0023]The spirit of the present disclosure is determined by the claims, and the following exemplary embodiments are provided only to efficiently describe the spirit of the present disclosure to those of ordinary skill in the art.

[0024]FIG. 1 is a diagram ill