D-Link DVG-3016S User Manual download pdf (Page 30)

SIP

 All Call through OutBound Proxy：An outbound proxy server handles SIP call signaling

as a standard SIP proxy server would. Furthermore, it receives and transmits phone

conversation traffic (media) in between two talking gateways. This option tells the

gateway to send and receive all SIP packets to the destined outbound proxy server

rather than the remote gateway. This helps VoIP calls to pass through any NAT

protected network without additional settings or techniques. Please make sure your

VoIP service provider supports outbound proxy services before enable it.

 Session Expiration: It is to avoid the billing of abnormal dropping the call because of

Internet. The default is disabled.

 Session Refresh Request: to send the packet of UPDATE or re-INVITE to

 Session Refresher: It is the gateway’s role in Session Timer. UAS is an originator, and

UAC is a replier.

 Enable P-Assert: It is for caller id protect.

 Privacy Type: Privacy requested for Third-Party Asserted.

 SIP Message Resend Timer Base: SIP packet will resend if response didn't arrive in the

base time set in this column. It will send again at "base time" * 2, and send again at

"base time" *2 *2. The max of resend time is 4 sec. Resend will stop/restart when total

resend 20sec has reached.

 Max. Response Time for Invite: If the destination does not reply in the set time, this call

is failed.

 Invite URL need ‘user=phone’: There is ‘user=phone’ in invite packet.

 Reliability of Provisional Responses: Provide information on the progress of the request

processing if ticked.

 Compact Form: It decreases the size of SIP header if ticked.

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D-Link DVG-3016S User Manual Page 30