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