CounterPath Bria BlackBerry Edition User Guide - Manual (Page 34)

CounterPath Corporation
30
Audio Codecs Selection
Mobile Audio Codecs Wi-Fi Audio Codecs
These two screens list the audio codecs that can be used during a Wi-Fi call or mobile data call. Codecs are
programs in Bria involved in transmitting audio; each codec has different characteristics and therefore each
works better in some situations than in others.
In general, it is desirable to have several codecs enabled. Make sure that there are common codecs between you
and the remote peer, otherwise your call will fail with a 488 error.
Novice and Non-technical Users
We recommend you use the default setting/priority and let Bria select the best codec to use in a given situation.
Technically Savvy Users
You may choose to enable one, some or all codecs. If only one codec is enabled, all calls will be made with that
codec. If more than one is enabled, Bria negotiates the codec to use (from among the enabled codecs) with the
other person.
You can prioritize codecs by selecting it and tapping the up or down button in the list. Codecs higher in the list
are given a higher priority in the offer, when negotiating codecs with the other party. Therefore, moving a codec
higher should improve its chances of being chosen.
G.722 is a wideband codec. All other codecs are narrowband. When a wideband codec is used, data usage will
be higher and audio quality will generally be better. When a narrowband codec is used, data usage may be lower
but audio quality may be affected.
Data usage for the codecs, from high to low usage, is: G.722, G.711, iLBC, GSM, G.729a.
You can only enable G729 if you
have purchased them; see
page 31.
Select the codec and tap the up or
down button to change its priority
in the list. See below.