Circuit calling generator for testing function of communication function system and method thereof

[0063] The following will refer to the above Figures 2 to 6 A specific preferred embodiment of the present invention will be described. This embodiment is primarily concerned with a circuit call generator (loadbox) interfaced with an interworking function system that can be used as a wired user (modem or facsimile machine) for a wired network or as a wireless user for a wireless network ( terminal or mobile phone). Therefore, the circuit call generator can generate calls and data services for interworking functional systems without network devices such as terminals, mobile phones, base stations / base station controllers, mobile switching centers, modems, personal computers, fax machines, etc., which The network devices generally constitute a digital cellular service system or a personal communication service system of a cellular network, as described in the above description of the prior art.

[0064] The circuit call generator of the present invention adopts the PPP / IP / TCP ...