Voice Transport

Voice is transported over the transport protocol. The transport protocol is a communication protocol that establishes connections and transfers the data safely.

After packetization, the IP packets are sent into WLAN frames by using LAN addressing. The frames are then sent through the Access Point (AP) using standard Internet Protocol.

The two main protocols used to transport traffic are User Datagram Protocol (UDP) and Transmission Control Protocol (TCP). For example, Voice signalling protocols may use TCP and UDP. UDP is used when you are only concerned about the transfer of the actual voice data.

Transportation of the voice traffic is delay-sensitive and requires packet-by-packet information. So, Vocera systems use real-time traffic, RTP (Real-time Transport Protocol) that runs on UDP. The RTP protocol follows RFC 3550 standard.

For legacy servers, vRTP is used. For more information in vRTP, refer to Vocera RTP.