Method for determining voice quality in a telecommunications network

A method for determining a quality of voice transmitted by electrical signals between a first telecommunication terminal and a second telecommunication terminal in a telecommunication network, the method comprising:

• identifying a model type for the first telecommunication terminal and the second telecommunication terminal respectively;
• identifying at least one operating parameter (n) for the telecommunication network;
• selecting at least one call aspect (i) of the transmitted voice wherein a quality of the voice transmitted shall be determined for the at least one call aspect (i);
• identifying a value of at least one quality parameter (KQIA/B, i, n) for the at least one call aspect (i) for at least one of the first telecommunication terminal and the second telecommunication terminal as a function of a value of at least one selected engineering parameter (KPIA/B) of the at least one telecommunication terminal as well as a function of the at least one operating parameter (n) of the telecommunication network;
• determining a value of an end to end quality parameter (KQIE2E, A, i) of the first telecommunication terminal for the at least one call aspect (i) as a function of the identified value of the at least one quality parameter (KQIA/B, i, n), wherein the value of the end to end quality parameter (KQIE2E, A, i) of the first telecommunication terminal represents a quality of the voice transmitted for the call aspect (i) as perceived by a user (NA) of the first telecommunication terminal;
• further comprising determining a respective value of an end to end quality parameters (KQIE2E, A/B, i) for the first and second telecommunication terminals;
• and
• determining the end to end quality parameters (KQIE2E, A/B, i) is performed by selecting the identified value of the quality parameter (KQIA/B, i, n) so that the end to end quality parameter (KQIE2E, A/B, i) corresponds to the quality parameter (KQIA/B, i, n).

A method for determining a quality of voice transmitted by electrical signals between a first telecommunication terminal and a second telecommunication terminal in a telecommunication network, the method comprising:

• identifying a model type for the first telecommunication terminal and the second telecommunication terminal respectively;
• identifying at least one operating parameter (n) for the telecommunication network;
• selecting at least one call aspect (i) of the transmitted voice wherein a quality of the voice transmitted shall be determined for the at least one call aspect (i);
• identifying a value of at least one quality parameter (KQIA/B, i, n) for the at least one call aspect (i) for at least one of the first telecommunication terminal and the second telecommunication terminal as a function of a value of at least one selected engineering parameter (KPIA/B) of the at least one telecommunication terminal as well as a function of the at least one operating parameter (n) of the telecommunication network;
• determining a value of an end to end quality parameter (KQIE2E, A, i) of the first telecommunication terminal for the at least one call aspect (i) as a function of the identified value of the at least one quality parameter (KQIA/B, i, n), wherein the value of the end to end quality parameter (KQIE2E, A, i) of the first telecommunication terminal represents a quality of the voice transmitted for the call aspect (i) as perceived by a user (NA) of the first telecommunication terminal;
• further comprising determining a respective value of an end to end quality parameters (KQIE2E, A/B, i) for the first and second telecommunication terminals;
• and
• determining the end to end quality parameters (KQIE2E, A/B, i) is performed by selecting the identified value of the quality parameter (KQIA/B, i, n) so that the end to end quality parameter (KQIE2E, A/B, i) corresponds to the quality parameter (KQIA/B, i, n),
• wherein the identified value of the quality parameter (KQIA/B, i, n) is stored in a a multi-dimensional matrix residing in a non-transitory computer-readable storage medium.