3、The design and implementation methods of a SIP based IP video phone are introduced.
6、Overview: This machine applies to computer keyboard, keypad, 3g video phone keyboard, ATM keyboard Etc. Key test load-displacement curves.
2、Information push system based on video phone is an important appreciated service system, it is important part of profit commerce pattern based on video phone.
7、Most systems are not compatible: common technical standards are years away, as is a common video phone book.
5、First, the audio signal is established in the same way that any phone call is made... only if the called subscriber also has a video phone set.
1、The fifth chapter discusses principles, standards, protocols, key technologies and whole implementation of video phone and video conference.
4、The structure of video phone system is optimized to match the feature of embedded system hardware.
