IP Office Product Description
IP Office 4.2
© 2008 AVAYA All rights reserved.
Page 147
Issue 18.b.- (08 July 2008)
Option 2: Direct connection from the IP Office’s second Ethernet port to the internet via a DMZ (demilitarized
zone) port on the router. To make this configuration secure, the IP Office firewall is set to drop all packets
except SIP.
Option 3: Connection to the ITSP over NAT using 3rd party STUN (Simple Traversal of UDP through NAT)
servers in the network to discover the NAT mechanism being used.
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