$2\mathrm{.}1$ VolP has become increasingly prevalent in organizations of all sizes. In essence, VoIP involves the transmission of speech across IP$-$based networks. VoIP works by encoding voice information into a digital format, which is carried across IP networks in discrete packets. With regards to VoIP, explain the following concepts:

VoIP Signalling

VoIP Processing

VoIP Context

VoIP ThreatsVoIP Security Measures

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