CDX-IPH301
-VoIP User Manual V1.0
32
Configure enable/disable RTP Encode;
Configure enable/disable Session Timer;
Configure enable/disable answer with single codec;
Configure enable/disable Auto TCP;
Configure enable/disable Strict Proxy;
Configure enable/disable GRUU;
Configure enable/disable Displayname Quote;
9.3 STUN configuration
SIP STUN is a kind of server that used to realize the SIP's enablement of NAT,
when the STUN server IP of the phone has been configured
（
generally the
default port is 3478
）
and Enable SIP Stun has been selected, conventional
SIP server can be used to realize the phone's penetration of NAT.
