The PA-E3 serial port adapter has the following features:
Single- or double-port E3 rate (34 Mbps) connectivity
Full-duplex synchronous serial E3 interface
High-speed High-Level Data Link Control (HDLC) data
Integrated data service unit (DSU) functionality
Support for 16- and 32-bit cyclic redundancy checks (CRCs)
Support for G.751 framing or bypass framing
Support for ATM-DXI, Frame Relay, HDLC, Switched Miltimegabit Data Service (SMDS), and PPP serial encapsulations
Support for national service bits
Support for E3 MIB (RFC 1407)
Support for remote and local loopback
HDB3 line coding
Scrambling and bandwidth reduction
Online insertion and removal (OIR)
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