Assessment of the quality of a communication session over a telecommunication network

User device comprising means for a first party (1) to establish a communication session (3) with at least one second party (2a, 2b . . . 2N), over a telecommunication network (4), comprising:

• means to transmit an audio stream associated with said communication session;
• and
• means for:
• monitoring (S1) said communication session by continuously receiving an audio stream associated with said communication session;
• converting (S2) language of said audio stream into text data;
• determining (S3), from said text data, quality features comprising a first understandability quality feature (UQFA, UQFG) and an information quality feature (IQF), said first understandability quality feature being representative of at least word articulation and grammar correctness within said language, and said information quality feature being representative of a comparison of semantic content of said audio stream with a set of contents related to said audio stream;
• assessing (S4) said quality from said quality features;
• providing a feedback on said user device according to said quality.

Method for assessing a quality of a communication session (3) between at least one first party (1) and at least one second party (2a, 2b . . . 2N), over a telecommunication network (4), comprising

• monitoring (S1) said communication session by continuously receiving an audio stream associated with said communication session;
• converting (S2) language of said audio stream into text data;
• determining (S3), from said text data, quality features comprising a first understandability quality feature (UQFA, UQFG) and an information quality feature (IQF), said first understandability quality feature being representative of at least word articulation and grammar correctness within said language, and said information quality feature being representative of a comparison of semantic content of said audio stream with a set of contents related to said audio stream;
• assessing (S4) said quality from said quality features