Patent ID: 8879541
Filing Date: 2014-11-04
Classification: H04M

Abstract:
1. An Internet Protocol (IP) telephone comprising: a report destination management table that is set therein (a) a call identifier uniquely identifying a call, (b) service status, and (c) a report destination of a call state transition report being interrelated with each other, the report destination being determined based on the call identifier and the service status, the call state transition report indicating call state transition for every call identifier, the service status indicating a supplementary service, the supplementary service including at least one of call park and call pickup; a report transfer unit that receives the call state transition report, obtains the report destination corresponding to a call identifier of the received call state transition report from the report destination management table, and transfers the received call state transition report to the obtained report destination; and a module management table including a vendor identifier uniquely identifying a vendor, a service identifier of the vendor, and a module identifier uniquely identifying a module that executes the service.