Telefonaktiebolaget Lm Ericsson (publ)

Edward Wingrowicz

Angelo Cuffaro

A system and method in a radio telecommunications network for correlating speech quality over an air interface link with a plurality of radio quality parameters. The system includes a mobile switching center (MSC) for recording uplink radio quality information from the air interface link, a mobile test tool for recording downlink radio quality information from the air interface link, a parser for parsing the radio quality information into the plurality of radio quality parameters, and a memory for storing the parsed radio quality information. A digital audio tape (DAT) recorder or personal computer (PC) is electronically connected to a mobile station for recording a speech conversation from the air interface link simultaneously with the recording of the radio quality information. A DAT-link interface is utilized to interface the DAT recorder with a playback unit and with a synchronizer/controller which synchronizes the stored radio quality information and the stored speech conversation. The radio quality parameters are presented to the operator in graphical form on a visual display while the speech conversation is simultaneously presented to the operator in audio form. The operator enters a subjective evaluation of the speech quality of the speech conversation, and the evaluation is correlated with the radio quality parameters and displayed on the visual display.

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Kista, Sweden

Edward Wingrowicz