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Enable Rport
Set the line to add rport in SIP headers
Enable PRACK
Set the line to support PRACK SIP message
Enable DNS SRV
Set the line to use DNS SRV which will resolve the FQDN in proxy
server into a service list
Auto Change Port
Enable/Disable Auto Change Port
Keep Authentication
Keep the authentication parameters from previous authentication
Auto TCP
Using TCP protocol to guarantee usability of transport for SIP
messages above 1500 bytes
Enable GRUU
Support Globally Routable User-Agent URI (GRUU)
RTP Encryption
Set the pass phrase for RTP encryption
With Mac field
When enabled, all SIP messages strip Mac fields
Register with the
Mac field
When enabled, register the message ribbon Mac field
9.14 Line >> Basic Settings
STUN -Simple Traversal of UDP through NAT -A STUN server allows a phone in a private network to
know its public IP and port as well as the type of NAT being used. The equipment can then use this
information to register itself to a SIP server so that it can make and receive calls while in a private
network.
