Four Channel’s GSM VoIP Gateway
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3.4.2.1 Advanced Settings
Click on “
Advance Settings
” tab on the top right corner of the Call Setting page to
display all the parameters available, as shown below, for programming. These
parameters allow more advanced control over the SIP signaling and media preference.
A
）
Signaling Port (SIP Local port)
The default SIP port is 5060. Change this as required.
B
）
NAT Keep-alive
The NAT Keep-alive feature sends a null packet to the SIP Proxy periodically in order
to keep the NAT open for incoming data traffics.
C
）
Advanced Timing Settings
Some SIP proxies may have special timing requirements. Change these parameters as
required.
