Cisco 2 Port E3 Serial Port Adapter with E3 DSUs 34Mbit/s networking card

2 Port E3 Serial Port Adapter with E3 DSUs The PA-2E3 serial port adapter is available on Cisco 7200 series routers, on Cisco 7500 series routers, and on Cisco 7000 series routers with the 7000 Series Route Switch Processor (RSP7000) and 7000 Series Chassis Interface (RSP7000CI). This port adapter provide two high-speed full-duplex synchronous serial E3 interfaces and integrated data service unit (DSU) functionality.

The E3 port adapter can transmit and receive data at E3 rates of up to 34 Mbps and use a 75-ohm coaxial cable available from Cisco to connect to a serial E3 network. This port adapter support the following:

•16- and 32-bit cyclic redundancy checks (CRC).
•High-speed HDLC data.
•G.751 framing or bypass.
•HDB3 line coding.
•ATM-DXI, Frame Relay, HDLC, PPP, and SMDS serial encapsulation.
•National service bits.
•E3 MIB (RFC 1407).
•Scrambling and reduced bandwidth.
•Remote and local loopbacks.