Polycom 4300T Manual De Usuario

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Introduction

The V

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IU 4300T is an intelligent, all-in-one networking solution for enterprises 

and service providers.  It reduces costs by simplifying the deployment, 

management and security of converged voice, video and data networks.  The 

4300T provides the following important functions for converged networks:

The 4300T provides an integrated T1 CSU/DSU for small and medium office 

connectivity. 

A stateful packet inspection firewall is used in combination with a VoIP 

application layer gateway to provide comprehensive “media-aware” security.  

The 4300T also supports IPSec for secure site-to-site networking. 

The 4300T resolves NAT/FW traversal problems for SIP, MGCP and H.323 

traffic.  It allows a single public IP address to be used for multiple VoIP clients.  

VoIP survivability is also provided by the 4300T so that local SIP PSTN 

gateways can be used for inbound/outbound calling during WAN link 

failures.

The 4300T maximizes WAN link utilization while optimizing voice quality 

using prioritization and shaping.