User Manual

CounterPath Corporation

SIP Accounts – Topology

Table 4: Accounts – 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) a nd media relay IP an d use these to

automatically det erm ine th e best rout e 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 addre ss of the firewall traversal server (th e ST UN or TURN se rver), if available,

using DNS SRV.

• Specified: Use the fir ewall traversal serve r specified as eith er an IP address or a fully qualif ied 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.