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1-3
PA-E3 Serial Port Adapter Installation and Configuration
OL-3502-04
Chapter 1 Overview
Features
Features
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 Multimegabit 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)
LEDs
The one-port PA-E3 has one status LED and six uplink port status LEDs (RCLK, FERF, OOF, AIS, RL,
and LL) for the serial E3 port. (See
.)
Figure 1-3
One-Port PA-E3 LEDs
—
Partial Front View Shown
The two-port PA-2E3 has one status LED and six uplink port status LEDs (RCLK, FERF, OOF, AIS, RL,
and LL) for each serial E3 port. (See
Figure 1-4
Two-Port PA-2E3 LEDs—Partial Front View Shown
ENABLED
RCVR
XMTR
RCLK
AIS
FERF
RL
OOF
LL
E3 SERIAL
H10606
LEDs
ENABLED
RCVR
XMTR
RCLK
AIS
FERF
RL
RCLK
FERF
RL
OOF
LL
AIS
OOF
LL
2E3 SERIAL
H10049
LEDs