Telefonica Germany, which provides fixed and mobile services under the brand O2, has begun offering femtocell devices to business customers looking to boost their indoor UMTS reception. The Spanish-owned company’s ‘Signal Box’ is linked with a LAN cable to a DSL connection and to the power supply, which enables it to build up its own local UMTS network for mobile calls and internet usage. The femtocell is seamlessly integrated within the O2 network, meaning that when a customer leaves the Signal Box reception area, their mobile call will be handed over to O2’s standard network. Two models are available: the ‘Signal Box S’ enables up to four simultaneous phone calls and costs EUR149.99 (USD194.8), while the ‘Signal Box M’ allows up to 16 parallel phone calls and is priced at EUR599.99.