Title :
A Real Time Voice Transmission Method for Voice Privacy between CDMA Mobile Network and PSTN
Author :
Park, Yong-Seok ; Ahn, Jaehwan ; Kim, Choon-Soo ; Ryou, Jae-Cheol
Author_Institution :
Nat. Security Res. Inst., Daejeon
Abstract :
To realize the voice privacy between CDMA mobile phone and TSTN terminal, the voice frames shall be transmitted transparently between the heterogeneous networks. For satisfying this requirement, we propose the method which transmits voice frames by the CDMA circuit data channel in real time. In this paper we analyze the causes of voice delay which occurs during voice transmission by circuit data channel, propose methods which overcome the voice transmission delay and prove proposed methods by the experiment.
Keywords :
code division multiple access; mobile radio; voice communication; wireless channels; CDMA mobile network; PSTN; circuit data channel; mobile phone; real time voice transmission method; voice delay; voice frames; voice privacy; Circuits; Data privacy; Delay; Forward error correction; Mobile communication; Mobile handsets; Modems; Multiaccess communication; Vocoders; Wireless application protocol;
Conference_Titel :
Multimedia and Ubiquitous Engineering, 2007. MUE '07. International Conference on
Conference_Location :
Seoul
Print_ISBN :
0-7695-2777-9
DOI :
10.1109/MUE.2007.48
