The Cisco IP DECT DBS-110 Single-Cell Base Station allows up to 30 SIP registrations per unit and up to 2 base stations and 12 repeaters per system. At its maximum size a DBS-110 system supports 20 concurrent narrowband or 10 concurrent wideband calls. The Cisco IP DECT RPT-110 Repeater extends the connectivity range of handsets registered to the Base Stations. Each Base Station and Repeater has a signal radius of 50 meters (164 feet). The Deployment Guide provides more detail on how combinations of Base Stations and Repeaters may be installed to satisfy different signaling coverage scenarios. The DBS-110 Single-Cell Base Station, DBS-210 Multi-Cell Base Station and RPT-110 Repeater are supported in the follow frequency ranges: 1880 – 1900 MHz (Australia and New Zealand – reduced power 22 dBM) 1880 – 1900 MHz (E.U. and APAC) 1920 – 1930 MHz (U.S. and Canada) Each handset is programmed to the one of the frequency ranges above when registering to a Base Station for the first time.