CounterPath X-Lite 4.6 for Mac User Guide - Manual (Page 40)

CounterPath Corporation
36
Account – Topology
Field Description
Firewall traversal
method Choose the setting recommended by your VoIP service provider:
• Auto detect using ICE: Automatically determine the contact address for signaling traffic.
Advertise the local IP, public IP (discovered via STUN, if available) and media relay IP and use these to
automatically determine the best route for media traffic during calls.
• Discover public IP address: Advertise the public IP address (discovered via STUN) for the contact
address for signaling traffic, and for the connection address for media traffic.
• Use media relay (TURN): Advertise the public IP address (discovered via STUN) for the contact address
for signaling traffic.
Advertise the address of a media relay server (discovered via TURN) for the connection address for
media traffic.
• None: Advertise the local IP address only for both signaling and media traffic.
Server address • Empty: Discover the address of the firewall traversal server (the STUN or TURN server), if available,
using DNS SRV.
• Specified: Use the firewall traversal server specified as either an IP address or a fully qualified hostname.
If you use the “Auto detect using ICE” option, then you can only enter a STUN server here. Don’t enter
a TURN server because when ICE is used, TURN is not supported.
Range of ports The appropriate setting depends on your computer setup:
• Checked: If your computer is behind a restrictive firewall that only allows specific port ranges to be
used. Enter the range of ports to use for your SIP account. (You must also open those ports on your
firewall; refer to applicable firewall documentation for information.)
• Unchecked: If your computer is not behind a restrictive firewall.