Sip Setting; Basic Setting - D-Link DVG-5121SP User Manual

6. SIP Setting

6-1. Basic Setting

SIP Port Number: This is also called an outbound proxy. The SIP (Session Initiation Protocol) Port Number handles
SIP call signaling as a standard SIP proxy server. It receives and transmits phone conversation
traffic (media) between two VoIP telephone adapters. This option tells the VoIP telephone
adapter to send and receive all SIP packets to the destined outbound proxy server rather than
the remote VoIP telephone adapter. 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.
44
SIP Setting > Basic Setting
DVG-5121SP User's Manual
D-Link Corporation