Polycom 4300T Manual De Usuario

 Introduction

1 - 5

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 

. 

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

• On-board RJ-48 connector for easy direct connection

• 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 

DS-0 channels on the T1 are not used to carry uncompressed voice.

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.