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VoIP terminology

CLID -- Caller ID

DID -- Direct Inward Dial

  • Also known as your phone number. For example, your DID may be +1-650-444-5555.

SIP -- Session Initiation Protocol

  • SIP is the protocol used to initiate, terminate, and control phone calls. It doesn't not transmit any voice data.

RTP -- Real-time Transfer Protocol

  • The protocol used to transfer the voice (audible) portion of any VoIP call.