CounterPath Bria iPhone Edition 2.0 User Guide - Manual (Page 50)

CounterPath Corporation
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5.3 Advanced Settings
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If you make changes to the fields identified by a , you must tap the Apply Changes button at the
bottom of the screen or restart Bria.
Field Description
Network Traversal Strategy Tap to display the choices; see below.
Use VPN If Active If you are using Bria with a VPN connection to your network, set this field to ON, to
force Bria to select the VPN network interface.
If you are not using a VPN, set to OFF (default).
Only set this field to ON if you are using a VPN connection, otherwise the wrong
network interface may be selected, resulting in registration problems.
Voice Activity Detection • ON: audio is not transmitted when no one is speaking. Turning this feature on may
reduce bandwidth usage.
• OFF (default): audio is transmitted when no one is speaking.
Noise Reduction Tx Noise Reduction. When ON, Bria attempts to reduce background noise on audio you are
transmitting (sending to the other person). Not used on iPhone 4 and 4S. The default is
OFF.
Noise Reduction Rx Noise Reduction. When ON, Bria attempts to reduce background noise on audio you are
receiving from the other person. The default is OFF.
Quality of Service If desired, ask your VoIP service provider if QoS is supported. QoS (Quality of Service)
can allow your phone calls to be given a higher priority on the network. The default is
OFF.
RTP Port Start Change this value only if advised to do so by your VoIP service provider.
This indicates the start of the ports range used for RTP and RTCP sessions. The range is
100 ports wide. The range is not observed if ICE is used. The default is 4000.
Audio Codecs Selection Tap to display more information about these two fields. See page 49.
Verify TLS Cert Applies only if you use TLS as the transport.
• ON (default): Bria attempts to verify the certificate, sent by the SIP server, to see if it
is trusted. For the certificate to be trusted, a corresponding CA certificate, provided by
your VoIP provider, must be installed on your device (using the iPhone Configuration
Utility for example).
• OFF: Bria accepts the certificate without attempting to verify it.