| 摘要 |
The present invention relates an apparatus that makes a visual telecommunication using a public switched telephone network (PSTN) or an Internet protocol (IP) network to be possibly carried out on a wireless terminal. At present, there are two types of videophones such as a cellular-type like an IMT-2000 and a conventional type wired to PSTN. In case of an IMT-2000 terminal, the visual telecommunication is not fully serviceable yet, and the wired videophone using PSTN, that is currently being used, has a disadvantage in usability since the terminal should be fixed at PSTN. |
