The HSS (Home Subscriber Server) is the concatenation of the HLR (Home Location Register) and the AuC (Authentication Center) â two functions being already present in pre-IMS 2G/GSM and 3G/UMTS networks.
Three Days Grace's music has been described as post-grunge, hard rock, alternative rock, alternative metal and nu metal. Their self-titled album mostly uses the sounds of alternative metal and post-grunge. However, on their second album One-X, the band had more guitar solos and a more melodic sound.
Stone's third album, Introducing Joss Stone, released in March 2007, achieved gold record status by the RIAA and yielded the second-ever highest debut for a British female solo artist on the Billboard 200, and became Stone's first top five album in the US.