Introduction
This port is used for debug or local diagnostic purposes only. Primary configuration of the 4300T is performed from a web browser as covered in Chapter 3.
T1/E1 WAN port
The T1 WAN interface with the following features:
•Fully integrated CSU/DSU
•T1 support
•Fractional T1 support
•Layer 2 protocol support for: HDLC, Cisco HDLC (cHDLC), PPP, Frame Relay
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•T1/E1 framer and transceiver
—B8ZS/HDB3 zero suppression
—Response to Inband Loop codes
—Manual payload loop through the GUI
•External transmit clock input and receive clock output headers
•Timing: internal or external (loop times from the network)
•Provides long haul CSU or short haul DSU signaling
•Meets FCC part 68 protection requirements
The WAN port is used for connection to a data T1 line. The device at the far end of the line is a router or other device expecting TCP/IP data. Individual
Ethernet WAN port
The Ethernet 10/100 Mbps port on the 4300T can be used as a WAN interface as an alternative to the T1 interface. This port is typically used when connecting the 4300T to an existing T1/E1 WAN router, cable or xDSL modem.
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