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.
Live rock is generally a piece of reef rock (ancient dead corals) that is pulled directly from wild reefs or culture facilities. It is then boxed and immediately shipped to your local fish store or a distributor. Live rock provides structure for aquascaping and biological filtration in your aquarium. More often than not, live rock rock is still moist from being shipped right after it is collected. The reason for such quick shipment is to avoid the die off of beneficial bacteria and organisms that use the live rock as a host.