AX-125/145 SIP VoIP Router Quick Installation Guide
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3.4 VoIP
3.4.1 System Setting
To configure the basic Session Initation Protocol (SIP) settings, follow these steps:
1. From the menu, click
VoIP -> System Setting
. The VoIP System Setting
screen is displayed.
2. Configure these settings:
•
SIP contact port
: Assign the SIP listen port. Default is 5060.
•
NAT Traversal
: Enable/Disable STUN option. If enabled, assign the STUN
service provider’s IP address and port number.
•
RTP port
: You can assign the port range allowed to be used for SIP RTP
packets. This function could be useful when there is a router connected
between AX-125/145 and the Internet access, or you want to control ports
usage of the Internet environment.
•
IVR language
: You can choose the IVR voice prompt language type.
Currently, Chinese and English are supported.
•
DNS Query Timeout
: It sets the DNS query timeout. When the network
situation is bad, increasing this value increases the call-out success rate.
•
Stun Query Timeout
: This option is useful when the NAT Traversal is
enabled. When the network situation is bad, increasing this value increases the
call-out success rate.