Communication apparatus, communication method, and storage medium therefor

摘要

A communication apparatus capable of establishing a SIP session from which an unnecessary media session has been removed. When determining that a SIP session established with another communication apparatus includes an unnecessary media session other than a media session necessary for communication therewith, the communication apparatus establishes a SIP session not including the unnecessary media session with the other communication apparatus.

主权项

1. A communication apparatus comprising:
a memory; and a processor in communication with the memory, the processor configured to: transmit information, describing one or more media types, to a second communication apparatus; perform a data communication using a SIP session established with the second communication apparatus based on the transmitted information; determine, when said information describing a plurality of media types is transmitted, the number of SIP sessions established with the second communication apparatus; and transmit, when the number of the established media sessions is greater than one, information describing one media type out of the plurality of media types without describing the other media types, and perform, when the number of the established media sessions is one, the data communication using the established media session.