METHOD FOR ADAPTATION OF CODEC PARAMETRES AND TRANSFER OF VOICE SIGNAL IN NETWORK WITH SWITCHING OF PACKETS (VERSIONS) Russian patent published in 2010 - IPC H04L1/00 

FIELD: information technologies.

SUBSTANCE: tolerance is established for change of voice signal quality, network is tested by higher and lower load, following the network testing results, optimal parametres of codec and voice signal transfer are found for current connection and established as current, change of voice signal quality is calculated with a certain periodicity on the basis of E-model rating factor (R-factor) calculation. In case calculated change of voice signal quality exceeds established tolerance for its for change, network is again tested by higher and lower load, following the network testing results, optimal parametres of codec and voice signal transfer are found for current connection, found parametres are established as current, and again change of voice signal quality is calculated with a certain periodicity.

EFFECT: improved quality of speech transfer in IP-telephony under conditions of unknown and unstable throughput capacity of communication channel and availability of accidental losses of transmitted packets in communication channel.

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