NetComm SmartVoice Gateway - Manual (Page 30)

30 SmartVoice Gateway(s) User Guide
YML832 Rev1
SIP Settings
• 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 communication parties. 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 you 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.