公开(公告)号：DE3479468D1

公开(公告)日：1989-09-21

申请号：DE3479468

申请日：1984-05-23

Applicant: IBM ,  IBM FRANCE

Inventor： CALLENS PAUL ,  NOAILLY PHILIPPE ,  GALAND CLAUDE ,  SECONDO PIERRE ,  GERGAUD CLAUDE

IPC: H04M3/00 ,  H04J3/17 ,  H04L12/64 ,  H04L11/20

Abstract: A method of transmitting digitized voice signals as packets of bits in a digital transmission network to which a plurality of terminals acting as sources of voice signals are attached. The method includes, at the transmitting end and for each source, the steps of: a dividing the signal into successive, digitally-coded segments; performing a so-called source activity detection; and assembling the bits resulting from the coding operation into packets, each packet being provided with a header containing, in particular, a parity bit whose logic value is modified whenever an inactivity or long pause is detected. At the receiving end, detection of a change in the value of said parity bit causes the delivery of a packet of bits to the decoder/synthesizer to be delayed by a given time interval called retention delay.

公开(公告)号：FR2406916A1

公开(公告)日：1979-05-18

申请号：FR7732158

申请日：1977-10-18

Applicant: IBM FRANCE

Inventor： GERGAUD CLAUDE ,  GRIMANELLI ETIENNE ,  TRACOL ANDRE

IPC: G06F13/00 ,  H04L12/403 ,  H04L12/423 ,  H04L11/20