VADcore GoIP4 Manual de usuario descargar pdf (Pagina 22)

Four-Channel GSM VoIP Gateway

3.4.2 Advanced Settings

Click on “Advance Settings” tab on the top right corner of the Call Setting page to display

all the parameters for programming, as shown below. These parameters allow more

advanced control over the SIP signaling and media preference.

A Local Signaling Port (SIP Local port)

The default SIP port is 5060. Change this as required.

B SIP 183

Check the box of SIP 183 if the SIP server supports this feature.

C) NAT Keep-alive

The NAT Keep-alive feature sends a null packet to the SIP Proxy periodically in order to

keep the NAT open on your firewall for incoming data traffic.

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VADcore GoIP4 Manual de usuario Pagina 22