Planet Technology Internet Telephony PBX System IPX-300 Series - Manual (Page 43)

NAT
NAT (Network Address Translation) serves three purposes:
1. Provides security by hiding internal IP addresses. Acts like firewall.
2. Enables a company to access internal IP addresses. Internal IP addresses that are only available
within the company will not conflict with public IP.
3. Allows a company to combine multiple ISDN connections into a single internet connection.
Figure 4-25. NAT settings
¾ NAT Setting
Figure 4-26. NAT settings
43