Welltech VoIP ATA series V.2.1 - Manual (Page 104)

ATA-171/172/171P/171M/171+/172+
User’s Guide
Chapter 8.1 NAT Transfer
Provides STUN Settings.
8.1.1 STUN Settings
8.1.1 Function
STUN Settings could set the IP of STUN Server information.
8.1.2 Instruction
Figure STUN Setting
STUN Default: Off. When setting ON, STUN will be active.
STUN Server Default: stun.xten.com； Can be IP Address or Domain Name.
Format: xxx.xxx.xxx.xxx；Maximum length: 63 bytes.
STUN Port Default: 3478；Data range: (1024~65535)；Maximum length: 5
bytes.
Force Public IP Default to Off (inactivated); activate Force Public IP function.
When the setup is On(activated), Force Public IP function can be
implemented. Provide On(activate) and Off(inactivated) mode.
Public IP address Setup Public IP address. Data input format is xxx.xxx.xxx.xxx;
data length is 63 digits.
Port Default Port number 5060. Setup public port number. The
segment for data setup is (80~65535); data length is 5 digits.
Submit [Button] Submit the change.
Reset [Button] Clear the change.
8.1.3 Operate Instruction
Step 1: On the main page, select [NAT Trans.  STUN Settings], enter [STUN Setting] page, after
revising the information (e.g.: STUN: On，STUN Server: stun.xten.com，SUTN Port: 3478)
(See Figure 1), click [Submit].