| 摘要 |
In a wireless network audio information is transmitted in digital form and in discrete packets. This audio information as well as call control information packetised and in digital form are both transmitted via a single call connection. Notification is sent from one communication device to another (eg. using SMS or USSD systems) to establish an interactive voice session. The devices then notify each other that the new voice channel will also be used from subsequent transfers of control information. The voice packets and control packets are transmitted using a common transport protocol eg. based on current WAP protocols. The internet protocol may be used.
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