Network traversal strategy – CounterPath Bria iPhone Edition User Guide User Manual
Network Traversal Strategy
Select a profile.
Application Managed (default): Bria will use STUN and ICE to determine the best route for media traffic
Server Managed: Choose this option if your VoIP service provider advises you that it has implemented a
network-hosted NAT traversal (or far-end NAT traversal) technology such as a session border controller
(SBC), media proxy or RTP relay.
User Specified: Global IP, STUN, ICE and DNS SRV are all on by default, but you can turn any of them
off, and you can also specify a different STUN server (assuming STUN is used).
If the transport is set to TLS, you can encrypt a phone call at the media (audio) level:
• Never: Audio is not encrypted.
• If Possible: On a given call, audio will be encrypted if the other person supports and is
also using audio encryption. If not, audio will not be encrypted.
• Always: Audio will always be encrypted. The call will fail if the other person cannot
accept encrypted calls.
SIP Registration Refresh
The timer interval between Bria's attempts to register in order to refresh the account
This value is placed in the “Expires
header field of the SIP REGISTER message.
Change this value only if advised to do so by your VoIP service provider.
Leave this setting OFF unless customer support instructs you to turn it ON in order to
troubleshoot a problem you are having on your computer. See page 22.
Press the button to upload the current log to your provider.
To show detailed information about the current/last call. For example, the number of
• ON: Bria will publish its public IP address at the signaling level. The public address
may not work with some NATs or firewalls.
• OFF: Bria will publish its private IPs at the signaling level. Typically, you turn this
field off only if instructed to do so by your VoIP service provider.
• ON: Bria will use a STUN server to discover its public IP address. The public IP
address will be presented as the address that the remote party must send media (audio)
• OFF: The private IP address will be presented as the address that the remote party
must send media (audio) packets to. Try turning OFF STUN if you are not using
iPhone behind a firewall or NAT.
The default is counterpath.com. If you select the User Specified profile and you want to
use a different STUN server, enter the address here.
• ON: Bria will use ICE to discover addresses for media packets. ICE provides a good
guarantee of two-way audio. However, to use ICE successfully, both endpoints in a
call must use ICE and specifically must use draft 19 of the ICE standard.
• OFF: Try turning ICE off if you are not using iPhone behind a firewall or NAT.
• ON: Bria will attempt to automatically discover the network addresses for your VoIP
service provider's VoIP-related services such as a STUN server, if any.