The PA-T3+ is also referred to as the Cisco PA-T3+, 1 Port T3 Serial Port Adapter Enhanced series of port adapters. These port adapters are available on the Cisco 7200 router series as well as on second-generation Versatile Interface Processor (VIP2) in all members of the Cisco 7500 router series. They are also on Cisco 7000 series routers with RSP7000 and RSP7000CI. These high-quality port adapters reliably provide one PA-T3+ or two PA-T3+ high-speed full-duplex synchronous serial T3 interfaces as well as integrated DSU functionality.
The PA-T3+ port adapters are able to transmit and receive data at T3 rates of up to 45 Mbps and utilize a 75-ohm coaxial cable (also manufactured by Cisco) to connect to a serial T3 network. If you’d like more information on purchasing one of these coaxial cables, please contact us. The PA-T3+ port adapters support several features including: high-speed HDLC data; HDB3 line coding; 16- and 32-bit cyclic redundancy checks; DS3 MIB (RFC 1407); remote and local loopbacks; scrambling and reduced bandwidth; C-bit, M13, and bypass framing; and ATM-DXI, Frame Relay, HDLC, PPP, and SMDS serial encapsulation.
MULTI-LINK Communications Products (MLCP) is currently (January 2012) offering this port adapter for $165 which represents 98% off the manufacturer’s price.