CounterPath Bria iPhone Edition 2.2 User Guide - Manual (Page 43)

Bria iPhone Edition User Guide
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Use ICE Wi-Fi ICE is involved only in media routing (it is not involved in SIP signaling).
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.
Use ICE Mobile This setting has the same function as ICE Wi-Fi, but applies only when you are connected over
the mobile network.
Global IP Wi-Fi • ON (default): 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 IP address at the signaling level.
"Off" represents server-based network traversal, "On" app-based.
Global IP Mobile This setting has the same function as Global IP Wi-Fi, but applies only when you are connected
over the mobile network.
If you set this setting to ON, you must also set Global IP Wi-Fi to ON.
Use Tel URI Change this value only if advised to do so by your VoIP service provider.
• ON: Prefix SIP URIs with tel://
• OFF (default): Prefix SIP URIs with sip://
SIP Transport Tap to display the choices. Contact your VoIP service provider to identify the types of transport
that are supported.
• UDP and TCP do not support signal encryption.
• TLS does support signal encryption. If TLS is selected, a given call will be encrypted if the
other person also uses TLS. You may also need to install a certificate on your iPhone; speak to
your VoIP service provider.
Encrypt Audio 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.
Incoming Calls Typically ON, in order to receive calls. If OFF, you will not be able to receive calls using Bria.
Refresh Interval The timer interval between Bria’s attempts to register in order to refresh the account registration.
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.
Keep Alive - Wi-Fi Interval A “keep alive” message is a mechanism for maintaining a “pinhole” through your firewall so that
the account registration is maintained. The interval specifies how often the message is sent (in
seconds).
If you are experiencing problems (for example, accounts become unregistered when using a Wi-
Fi connection), try setting this interval to a lower number such as 20.
Keep Alive - Mobile Interval Same as above, except the interval applies to registrations made over the mobile data network,
which can be made on an iPhone (but not an iPod) when you are not in a Wi-Fi zone.
Single Register Applies only if Global IP is ON. Only choose ON if advised by your VoIP service provider.
• ON: Bria will register using a single register request.
• OFF (default): Bria will register using an unregister and a register.
Field Description