CounterPath Bria 3.0 for Mac User Guide – Enterprise Deployments - Manual (Page 6)

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• 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.