The Star Trek Chronology (? ed., p. ?) states that this event took place in 2133. Excised dialogue established that one of the Dax hosts met Taluno. This Dax encountered Taluno at a peace conference when the host was an apprentice diplomat and Jadzia Dax recalled him as "dour and dogmatic" and thought that Taluno was not given to exaggeration. (Trek: The Unauthorized, Behind-the-Scenes Story of Deep Space Nine, p 111) The lines were retained in the novelization of Emissary.
According to the script, Taluno was pronounced as "tah-LOO-noh".