CounterPath Bria 3.5.2 for Windows User Guide - Retail Deployments - Manual (Page 6)

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• Support for the following audio codecs (not all these codecs are included in the retail brands):
AMR Wideband (G.722.2), Broadvoice-32, Broadvoice-32 FEC, DVI4, DVI4 Wideband, G.711aLaw,
G.711uLaw, G.722, G.726, G.729, iLBC, OPUS, SILK narrowband, SILK wideband, SILK super-wideband,
Speex, Speex FEC, Speex Wideband, Speex Wideband FEC.
• Support for the following video codecs:
H.263, H.263+ 1998, H.264, VP8.
• Automatic selection of the best codec based on the other party’s capability, the available bandwidth, and
network conditions. Bria switches the codec within a call in response to changing network conditions.
• Compliance to 3261 SIP standard.
• XMPP compliance as follows:
• RFC 3920
• RFC 3921
Supported extensions:
• XEP-0004
• XEP-0016
• XEP-0022
• XEP-0077
• XEP-0085
• XEP-0092
• XEP-0115
• Support for these firewall traversal solutions: STUN, TURN, or ICE.