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 PA-T3+, Cisco PA-T3+, 1 Port T3 Serial Port Adapter Enhanced
The PA-T3+ serial port adapters are available on Cisco 7200 series routers, on second-generation Versatile Interface Processor (VIP2) in all Cisco 7500 series routers, and on Cisco 7000 series routers with the 7000 Series Route Switch Processor (RSP7000) and 7000 Series Chassis Interface (RSP7000CI). These port adapters provide one PA-T3+ or two PA-T3+ high-speed full-duplex synchronous serial T3 interfaces and integrated data service unit (DSU) functionality.
The T3 port adapters can transmit and receive data at T3 rates of up to 45 Mbps and use a 75-ohm coaxial cable available from Cisco to connect to a serial T3 network. These port adapters support the following features:
* 16- and 32-bit cyclic redundancy checks (CRC)
* High-speed HDLC data
* C-bit, M13, and bypass framing
* HDB3 line coding
* ATM-DXI, Frame Relay, HDLC, PPP, and SMDS serial encapsulation
* DS3 MIB (RFC 1407)
* Scrambling and reduced bandwidth
* Remote and local loopbacks
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