What is the purpose of RTP in VoIP?
A) It carries voice and data.
B) It works with a PBX.
C) It connects the VoIP phone to an analog phone.
D) It manages the dial plan.
A
Explanation: Real-time Transport Protocol (RTP) is a Layer 4 protocol that carries voice (and interactive video). The bidirectional RTP stream does not flow through the call agent but between endpoints.
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