33
phone to detect the presence and type of NAT behind which the phone is placed. SIP Stun
Server refers the SIP address of the Stun Server.
D
）
Nat Citron
It only use by H.323 protocol.
E
）
Relay Proxy
Relay proxy is HyberTone's proprietary NAT traversal technology which enables
HyberTone's VoIP terminals to achieve successful deployment in most LAN environments.
It includes address, ports, user name, and password.
Note
: This RELAY proxy is only compatible with the RELAY Server software developed by
HyberTone independently. It was free software; you can come down on us.
4.4.5.2 Media NAT Traversal
Click on the
“
Media NAT Traversal
”
in the
“
Call Settings
”
configuration page
’
s
“
Media
Settings
”
, the
“
NAT Traversal
”
screen will be displayed as follows.
Media NAT Traversal can make and receive calls through any type of NAT device. There
are four kinds of NAT traversal:
A
）
None
None means there is no traversal mechanism supported.
B
）
Port-forwarding Support
Port-forwarding is the action of forwarding network ports on the LAN interface to PCs or
servers in LAN network. Virtual servers use this technique to allow external users, in most
cases via internet, to reach services provided by internal servers such as FTP, HTTP,
Telnet, etc.
Port-forwarding support includes gateway address and echo server address. Gateway is a
communication device that connects two different networks. Echo server is a standard
service implementing the ECHO protocol.
C
）
STUN
（
RFC 3489
）
STUN stands for Simple Traversal of UDP over NAT. It is a protocol which enables the SIP
phones to detect the presence and type of NAT behind which the phone is placed. SIP
Stun Server refers the SIP address of the Stun Server.
D
）
Relay Proxy
Relay proxy is HyberTone's proprietary NAT traversal technology which enables
HyberTone's VoIP terminals to achieve successful deployment in most LAN environments.
It includes address, ports, user name, and password.
