PA-2T3+ synchronous serial port adapter provides T3 interfaces for connecting Cisco 7000 series routers to T3 networks; each interface transmits and receives data at rates of up to 45 Mbps, full duplex.PA-2T3+ port adapter provides one or two T3 interfaces that have two or four BNC receptacles (receive and transmit), respectively. The adapter cable (Product Number CAB-ATM-DS3/E3=) for the PA-2T3+ port adapter is a 10-foot (3.05-meter) 75-ohm coaxial cable with BNC connectors. This cable provides a connection from BNC-type connectors to the applicable ISO standard connector and is available only from Cisco Systems.