| 摘要 |
A method and system of controlling a Push-to-Talk over cellular (PoC) communication session between a first mobile device 1A and a second mobile device 1B, each of which is associated with a communications network 7A,7B is described. A communication link is initiated between the first device 1A and the second device 1B for transmitting speech data front the first device 1A to the second device 1B. It is possible for the user of first device 1A to enter data in the form of text (or other non-audio/inaudible form). This text data are transmitted to PoC server 13A. A text to speech converter 19A then converts this text data into speech or voice data. Transcoder 25A may convert the speech or voice data using a particular CODEC suitable for allowing the speech or voice data to be reproduced on the second device 1B. The speech or voice data is then transmitted from the PoC server 13A to the second device where it is reproduced as audible speech. The communication could also be between a group of devices. A method of controlling IP-based communication between a plurality of devices is also shown. |
