Cisco Systems, with proven reliability and robust product design, provides a dependable, high-performance solution for IS professionals. Remote bridges connect hard-to-wire sites, noncontiguous floors, satellite offices, school or corporate campus settings, temporary networks, and warehouses. Aironet wireless bridges also allow multiple sites to share a single, high-speed connection to the Internet. Aironet wireless bridges are flexible, supporting high data rates over medium and short ranges or lower data rates for long-range support.Cisco offers this iSS7 Redundancy 4 link system. SS7 is characterized by high-speed packet switching and out-of-band signaling using Service Switching (SSPs), Signal Transfer Points (STPs), and Service Control Points (SCPs) (collectively referred to as signaling points, or SS7 nodes). Out-of-band signaling is signaling that does not take place over the same path as the data transfer (or conversation) - a separate digital channel is created (called a signaling link), where messages are exchanged between network elements at 56 or 64 kilobit per second.