As a result of the evolution of the telecommunications networks in recent years, signal processing features for voice quality enhancement may now be found in different communication nodes, and combined in different ways on a bearer path. However, instead of the intended enhancements, signal processing enhancement functions deployed on the same bearer path could cause overall voice quality degradation due to undesirable side-effects of the interaction of the individual enhancement functions. The interaction concerns of voice enhancement functions can be mitigated if the communication nodes are properly coordinated and controlled to provide the end-to-end communication with the optimal placement of signal processing functions. Whilst local operators may have direct control of some of the equipment, this control may not extend to all the nodes in call scenarios such as intersystem links. The traditional “static ” approach to the coordination of voice enhancement signal processing function may not meet the requirements of modern call topologies, which tend to be dynamic. Lack of coordination of the voice enhancement functions may result in voice quality degradation. This recommendation defines a generic framework for a coordination mechanism intended to minimize undesirable interactions of VE-SPNE present on bearer paths of a communication link, for the purpose of improving overall end-to-end voice quality. A voice enhancement signal processing function that supports this recommendation will be better equipped to ensure that the pre-existing standard of overall voice quality is not compromised when it is installed in the network. Performance deviations from the standards are avoided or minimized by following this recommendation.
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