IP SIP Phone v2
User’s Guide
Mar. 2005
[86/100]
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UDP Traversal: Full Access (Public Host IP)
13.2.
LAN Configuration to Traverse NAT and
Firewall
There are basically two options for CPE to traverse NAT and Firewall:
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Option 1: Set up a static route in the NAT gateway (Recommend)
。
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Option 2: Use STUN to measure out ports.
Please adopt suitable option based on your network configuration.
Note:
some SIP ISPs may provide SIP-aware routers (NAT/Firewall) for their customers.
When you use a SIP-aware router, NAT detection should be set to "Off" as if you were on the
public internet and the configuration is the same as “Public Internet Configuration”: set
『
UDP
Traversal
』
to be
『
Full Access (Public Host IP)
』
, which is to say that you do not have to worry
about the NAT, nor firewall.
13.2.1. Static NAT Route
If you have access to your NAT/Firewall, you may contact your network administrator to
configure your NAT/Firewall route.
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Contact your network administrator and acquire consecutive UDP ports (at least 5
UDP ports in case of
IP SIP Phone
) mapped from the NAT to your terminal. For
example:
NAT IP = 218.81.107.51 (you may detect your NAT IP by clicking
『
Diagnose
NAT
』
)
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