CounterPath Bria iPhone Edition 1.2.8 User Guide - Manual (Page 32)

CounterPath Corporation
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Network Traversal Strategy
Select a profile:
• Default Configuration: STUN ON, ICE OFF, DNS SRV ON.
Bria will use the STUN server at stun.counterpath.com 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 STUN server at stun.counterpath.com 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. This profile lets you specify a
different STUN server.
Support RPort • On: the outgoing INVITE message will have an rport parameter inside the Via header,
which indicates that Bria supports RFC 3581. If the server also support RFC 3581, the
server should respond with the rport parameter set to the incoming public IP port and
the received parameter set to the public IP address. This is the default behavior in
previous Bria versions.
• Off: Bria does not have the rport parameter in the Via header.
If your calls drop within 30 seconds to 2 minutes after the call is successfully established,
try different combinations of rport and PRACK: off/on, on/on, on/off).
If none of these combinations solve the problem, turn both the settings off again
(default).
Support PRACK • On: Bria advertises that that it supports “100rel” and allows PRACK, as defined in
RFC 3262. The outgoing INVITE message will have “100rel” in the Supported header
and “PRACK” in the Allow header. This is the default behavior in previous Bria
versions.
• Off: Bria will not advertise these features; there will be no “100rel” in the Supported
header.
If your calls drop within 30 seconds to 2 minutes after the call is successfully established,
try different combinations of rport and PRACK: off/on, on/on, on/off).
If none of these combinations solve the problem, turn both the settings off again
(default).
Verbose Logging 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 32.
Send Log Press the button to upload the current log to your provider.
Call Statistics To show detailed information about the current/last call. For example, the number of
packets lost.
Field Description