Specifications
hg-07.fm
A31003-H3580-M103-2-76A9, 01-2009
HiPath 3000/5000 V8 - HG 1500 V8, Administrator Documentation
7-157
Nur für den internen Gebrauch
Explorers
Voice Gateway
7.5.4.4 Identify NAT Type
Four type of NAT exist: full-cone NAT, restricted-cone NAT, port-restricted-cone NAT, and sym-
metric NAT. Only the first three NAT types are compatible with STUN. The STUN protocol does
not support symmetric NAT implementation. The three supported NAT types operate as follows:
● Full-cone NAT – the NAT gateway translates internal addresses and ports into external ad-
dresses and their ports based on a static pattern. This ensures, in particular, that external
hosts can set up connections to internal hosts at any time using the NAT gateway’s external
address.
● Restricted-cone NAT – the NAT gateway only permits contact between an external host
and an internal host if the internal host previously contacted the external host.
● Port-restricted-cone NAT – permission to initiate contact is further restricted to the external
port previously used to establish contact in the opposite direction.
WBM path: WBM > Explorers > Voice Gateway > (right-click) Internet Telephony Service Pro-
vider > Identify NAT Type
The Identify NAT Type mask is displayed:
● Identified NAT Type:
The identified NAT type (full-cone NAT, restricted-cone NAT or port-restricted-cone NAT) is
displayed. If symmetric NAT is identified, VoIP is not possible.
● Time To Live (s):
Indicates how long more the NAT connection will remain active.
● Refresh:
Click this button to refresh the display.
● Auto. Refresh:
If this option is active, the time (in s) until the next automatic refresh is shown.
● Start NAT Type Detection:
Find out which type of NAT is permitted.
7.5.4.5 Display Internet Telephony Service Provider
You can display the settings for the selected Internet telephony service provider.
The color of the bullet point or of the folder indicates the Internet telephony service provider
status:
● Gray bullet point or yellow folder – the provider has been created but not ac-
tivated.
● Green – the provider is activated and registered. No errors have occurred.