Lisa Bock provides an overview of the multiple protocols that are involved to provide setup, communication control, and data transport, such as RTP, RTCP, Skinny, SIP, and H.323.
- [Instructor] A protocol is a set of rules that governs how systems communicate with each other. In Voice over IP, there are multiple protocols that are involved that provide setup, communication control, and data transport. TCP/IP is the internet suite that connects devices on the internet. The suite defines how data is packet-ized, addressed, transmitted, and routed. Dynamic Host Configuration Protocol supplies network hosts with an IP address and other configuration information such as the subnet mask and default gateway.
Real-Time Transport Protocol transports audio and video. Real-Time Control Protocol carries control information for each RTP session. Real-Time Streaming Protocol establishes and controls multimedia sessions in entertainment and communication systems. Session Initiation Protocol establishes, maintains, and terminates sessions between parties over the internet, private network, and cell systems.
Skinny Call Control Protocol is a Cisco proprietary signaling protocol used to register endpoints, provide addressing, return call messages, and control phone display. H.323 establishes properties such as audio codecs and logical controls for the media transfer. Demand for multimedia applications is increasing. In order to transmit streaming media successfully, multiple protocols are necessary to provide setup, data transport, and communication control over an IP network.
- Voice over IP (VoIP) and Unified Communications
- Digitizing a signal
- VoIP components
- Protocols used by VoIP, including TCP/IP and DHCP
- Connecting systems
- Gateways and gatekeepers
- Factors that might affect quality on a VoIP network
- Wireshark statistics