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VG3300 series user guide
Section Item Field Description Default
Port The control port number of SIP protocol. 5060 Port and Header
Header
Form
Select ‘Standard’ or ‘Compact’ to be the
header format of SIP packet. When
Compact is selected, the header will be
shorter and it saves bandwidth.
Standard
Domain
Name
Domain name or IP address of proxy. Empty
Disable
Outbound Proxy
Setting
Port Control port number of SIP protocol. 5060
Registrar Setting Domain
Name
Domain name or IP address of proxy
that you want to register.
Empty
Disable
Out-band DTMF Control Enable/Disable
Enable: It “Disable” RFC 2833 DTMF
Disable
Incoming Call
Screening
Screening Disable: Accept all incoming SIP call
Enable: This gateway only accepts
incoming call through SIP
Proxy.
Disable
NAT Signalling
Keep Alive
Control Port number mapping may change if the
connection to pass through some NAT
device is timeout. This function sends
Dummy Packet to Proxy server every 50
seconds to keep the port number via
NAT intact.
Disable: Does not send Dummy Packet
Enable: Send Dummy Packet
Disable
Target the media
(RTP)
Via Select the contact information (IP
Address, Port Number) to pass through
NAT device. Please refer to 11.7 Target
the Media
SDP: via SDP
Symmetric RTP: via Symmetric RTP
SDP
G.729AB: Mark the selection to Enable
G.729AB Codec
Enable Codecs Selection Codec
Type
G.723.1: Mark the selection to Enable
G.723.1 Codec
Enable
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