CounterPath Bria Android Edition 1.1.9 User Guide - Manual (Page 33)

Bria Android Edition User Guide
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Network Traversal Strategy
Speak to your VoIP service provider about the strategy to use. Or leave the
default and just change the STUN Server field.
Select a profile to set a specific combination of STUN, ICE, and DNS SRV:
• Default Configuration: STUN On, ICE Off, DNS SRV On.
Bria will use the specified STUN server to discover the public address of your
device. It will present that public address for SIP signaling and when
negotiating media routing.
• Application Managed: STUN On, ICE On, 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 and both your
public and private addresses when negotiating media routing.
• Server Managed: STUN Off, ICE Off, 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.
• User Specified: Set the settings as desired.
Field Description
STUN • 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 3G This setting has the same function as STUN, but applies only when you are connected
over 3G.
ICE ICE is involved only in media routing (it is not involved in SIP signaling).
• On (checked): 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 Bria behind a firewall or NAT.
ICE 3G This setting has the same function as ICE, but applies only when you are connected over
3G.
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.