Patent ID: 7856009
Filing Date: 2010-12-21
Classification: H04L,H04M,H04Q

Abstract:
1. A VoIP (Voice over IP) gateway apparatus which connects an accommodated device to an IP network and a detour network, the apparatus comprising: an accommodated device interface which connects to the accommodated device; an IP network interface which connects to the IP network; a detour network interface which connects to the detour network; condition storage means which stores a called party number, a detour condition and a number editing condition corresponding to each other; and calling control means which transmits a call arriving at the accommodated device interface to the IP network interface or the detour network interface, wherein; the detour condition includes one of a first detour condition, a second detour condition, and a third detour condition; and wherein the calling control means: when a called party number of a call arriving at the accommodated device interface encounters a condition which corresponds to the first detour condition stored in the condition storage means, edits the called party number of the call based on a corresponding number editing condition and transmits the call to the detour network via the detour network interface; when a called party number of a call arriving at the accommodated device interface encounters a condition which corresponds to the second detour condition stored in the condition storage means, determines whether or not a failure occurs in the IP network, if a failure occurs in the IP network, edits the called party number of the call based on corresponding number editing conditions and transmits the call to the detour network via the detour network interface, and if no failure occurs in the IP network, transmits the call to the IP network via the IP network interface without editing the called party number of the call; and when a called party number of a call arriving at the accommodated device interface encounters a condition which corresponds to the third detour condition in the condition storage means, transmits the call to the IP network via the IP network interface without editing the called party number of the call, and when a response code as a predetermined response thereto is received, edits the called party number of the call based on corresponding number editing condition and transmits the call to the detour network via the detour network interface.