SIP Course #24 Session Description Protocol

Описание: https://www.voip.school/p/sip-training/

This comprehensive guide explores the Session Description Protocol (SDP) - the critical companion protocol to SIP that enables media negotiation between VoIP endpoints. Learn how SDP works to establish compatible audio and video connections through a detailed examination of its structure and usage.

We'll dissect real SDP messages, explaining each section including session information, timing, media descriptions, and attribute lines. Understand how codecs are negotiated, how IP addresses and ports are specified, and how media attributes control session behavior. See how the offer/answer model works to establish mutually acceptable media parameters between communicating parties.

This video covers essential SDP concepts including ICE candidates for NAT traversal, SRTP parameters for media encryption, and codec preference handling. By mastering SDP, you'll be equipped to troubleshoot media-related issues like one-way audio, codec mismatches, and failed calls due to incompatible media parameters.
Invaluable for VoIP engineers, network administrators, and telecommunications specialists who need to understand and resolve media negotiation challenges in SIP environments.

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