Digital telecommunication system
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United States of America Patent
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Sep 11, 2012
Grant Date -
N/A
app pub date -
Oct 19, 1999
filing date -
Oct 21, 1998
priority date (Note) -
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Abstract
A digital telecommunications system wherein the telecommunications centers of the calling and called terminal are arranged to perform handshaking concerning the speech codec used by the terminals. Depending on the link between the telecommunications centers, the telecommunications centers are arranged to connect call connections past a transcoder unit or to control the transcoder units to let encoded speech through without speech encoding operations in such a way that speech encoding and decoding are carried out only in the terminals. Handshaking between the telecommunications centers is carried out as outband signalling.
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