CounterPath Bria Android Tablet Edition 3.1 User Guide - Manual (Page 63)

Bria Android Tablet Edition User Guide
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Echo Cancellation Try turning on this setting if you or the person you are talking to is hearing an echo.
When you turn this on, you can also choose the echo cancellation mode. If the other
person still hears an echo, turn this setting back to Off.
Codecs Variable Bitrate This setting applies when the negotiated codec is AMR-WB, SILK, Opus or H.264 (for
video call).
When this setting is turned on, Bria dynamically adjusts the bitrate throughout the call,
based on the current network conditions. For example, when Bria detects many packets
are lost, it tries to lower the bitrate (within the range of a bitrate supported by a specific
codec), in order to ensure the best possible quality under the circumstance.
We recommend that you leave this setting ON, especially when AMR-WB, SILK, Opus
or H.264 is enabled.
If you notice degradation in audio or video quality when your data connection is stable,
you can turn this setting off to see if it makes a difference.
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.
Microphone Gain Changing this setting may improve audio quality if your voice is loud and distorted for
the person you are talking. There are five options; the default is Normal (100%).
Speaker Gain Changing this setting may improve audio quality if your voice is loud and distorted for
the person you are talking. There are five options; the default is Normal (100%).
Audio API Type You can change the audio API used in Bria. Try changing to the other if you experience
poor audio.
Echo Cancellation Mode Applies only when the “Echo Cancellation“ setting is turned on.
• Auto: Lets Bria choose either software or hardware for echo cancellation.
• Hardware: You will see this choice only when your device supports this feature.
• Software
Auto Gain Control On to automatically adjust the gain. Appears only when this functionality is supported on
the device. Typically on.
Low Latency Control Appears only if the functionality is supported on the device (running Android OS 4.2 or
higher). This setting becomes changeable when "Audio API Type" is OpenSL ES. When
On, Bria tries to reduce latency.
Codec Options See page 62.
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.
• Off: Bria accepts the certificate without attempting to verify it.
Speakerphone Fix If the speakerphone is always turned on in Bria, turn on this setting and see if that forces
the speakerphone to turn off. If the speakerphone is still on, turn this setting off again.
Audio Input Source This setting controls how the device processes the audio input from Bria. If the person
you are talking to is receiving poor audio, try changing the audio source.
Playback Stream This setting controls how the device processes the audio receiving from the other party. If
you are receiving poor audio, try changing the playback stream.
Enable 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.
Field Description