CounterPath Bria Android Edition 2.2 User Guide - Manual (Page 54)

CounterPath Corporation
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Network Traversal Strategy
Speak to your VoIP service provider about the strategy to use. Make sure that
you change the STUN Server field.
•Application Managed: STUN On and DNS SRV On.
Bria will use the specified STUN server to discover the public address of your
device. It will present your public address for SIP signaling. When
negotiating media routing, it will present both your public and private
addresses or just your public address depending on the ICE settings under
Account Advanced.
•Server Managed: STUN Off and DNS SRV On.
Bria will present your device’s private address for SIP signaling and when
negotiating media routing. 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.
•Custom Configuration: Set the settings as desired.
Field Description
STUN Wi-Fi • On (checked): Bria will use a STUN server to discover your public IP address.
• Off: Bria does not discover your public IP address. Therefore, only the private IP
address will be used. Typically in this case, Global IP should be turned off.
STUN Mobile This setting has the same function as STUN, but applies only when you are connected
over mobile network.
DNS SRV • On (checked): Bria will use DNS SRV to discover the network addresses for your
VoIP service provider's VoIP-related services such as a STUN server, if any.
• Off: Bria will not use DNS SRV for discovery. Only turn this setting off if your
system administrator advises you to do so.
STUN Server Used only if STUN is on. The default is stun.counterpath.com but we recommend that
you change this to an address provided by your VoIP service provider. CounterPath
cannot guarantee the availability of their STUN server.