sdp meaning

In this super class, we'll talk about the meaning behind the power consumption metrics such as TDP, TBP, SDP, and ACP, first to introduce some basic knowledge: Power consumption calculation of CMOS circuits How does the CMOS circuit consume power? It's a problem to talk about. Integrated circuit power consumption design can be as a subject in-depth study, we also cannot explain in detail

(1) SDP description format(2) SDP example(3) SDP(1) SDP description formatM=video 1234 RTP/AVP 96a=rtpmap:96 H264A=framerate:15C=in IP4 192.168.0.104Above is a self-written RTPM=audio 1234 RTP/AVP 0a=rtpmap:0 PCMA/8000/1A=framerate:25C=in IP4 172.18.168.451.m= is the beginning of a media-level session, Audio: media typ

): The final response to terminate the SIP transaction. Each SIP Message consists of the following three parts: (1) start line: Each SIP message starts from the start line. The start line transmits the Message Type (method type in the request and response code) and Protocol version. The starting line can be a request line (request) or status line (response ). (2) SIP header: used to transmit message attributes and modify message meaning. They have the

record has a 32-bit unique data. Generally, this uniqueness is only true for each SDP.Server. If SDP server S1 and SDP server S2 have the same serviceRecord. Then their unique values in different SDP sever are not necessarily the same. SDP does not notify SDP client when t

line is the method type in the request, and the response code in the response) and Protocol version. The starting line can be a request line request) or a status line response ). 2) SIP header: used to transmit message attributes and modify message meaning. They have the same syntax and semantics as HTTP header fields. In fact, some headers are borrowed from HTTP. They are always in the format of 3) Message Body: used to describe the initial session

The Session Description Protocol (SDP) provides multimedia session descriptions for session notifications, session invitations, and other forms of multimedia session initialization. The session directory is used to assist with multimedia conference announcements and send relevant settings for session participants. SDP is used to transmit this information to the receiving end.

shared attribute mechanism for browsing services, which is known as Browsegrouplist The client browses the server's services by creating a service search pattern that contains the UUID that represents the root browse group 7. Data Representation SDP uses data element to represent data (property ID, property ID range, property value) A data cell is a typed representation of a data that consists of two fields: the header field and the data field The he

In fact, SDP is a very simple protocol. The key is to understand the concept. To be honest, the concept here is indeed very messy. Service: A service is an entity of a service class. used to provide information and execute an action. it can be composed of software, hardware, or a combination of the two. the Service handle attribute represents its key attribute. Service record: stores information about a service. A service record is composed of a servi

Next we will introduce the SDP protocol. So what is the specific role of this agreement? What does it mean? Session Description Protocol (SDP) provides multimedia session description for session notifications, session invitations, and other forms of multimedia session initialization. The session directory is used to assist with multimedia conference announcements and send relevant settings for session parti

RTP/RTCP/RTSP/SIP/SDP RelationshipRTP (real-time transport protocol, Transport layer)Real-time Transport Protocol) is a Transport layer protocol for multimedia traffic on the Internet. The RTP protocol details the standard packet format for transmitting audio and video over the Internet. RTP protocols are commonly used in streaming media systems (with the RTCP protocol), video conferencing and a Push-to-talk system (with either a/p or SIP), making it

Sdp:session description Protocol. Painting Description ProtocolThe SDP descriptions mainly include: Session name, session purpose, session validity time, the media that constitutes the session, and the information that accepts the media (address, port, format), and so on.1. OverviewSDP is also a product of the Mmusic workgroup, and is used much in mbone content. The purpose is to pass the media stream information in the media session, allowing the rec

SDP used to build INVITE , 200OK and the ACK the message body of the message, for the master to be called the user to Exchange media information. 1 . configuration of media streams( 1 ) the master called Media Description must correspond exactly to the main called N a media stream (m=) corresponding, both contain A=rtpmap. The purpose of this is to easily adapt the static payload type to the dynamic net load type conversion. ( 2 ) The port number for

SDP is completely a session description format-it is not a Transport Protocol-it only uses different appropriate transport protocols, including session notification protocol (SAP) and Session Initiation Protocol (SIP), real-time stream protocol (RTSP), mimeExtended protocol email and Hypertext Transfer Protocol (HTTP ). The SDP protocol is also a text-based protocol. This ensures that the Protocol is highly

The Session Description Protocol (SDP) provides multimedia session descriptions for session notifications, session invitations, and other forms of multimedia session initialization. The session directory is used to assist with multimedia conference announcements and send relevant settings for session participants. SDP is used to transmit this information to the receiving end.

SDP fileIntroductionThe session Description Protocol (SDP) is a format for describing the initialization parameters of streaming media Session S. SDP does not deliver media itself are used for negotiation between end points of media type, format, and all Associa Ted Properties.To connect to a streaming server sending an MPEG2 transport stream, you don't have usua

Keywords: Bluetooth bluetooth® protocol SDP Anatomy SDP overview SDP notes Author: Zhongjun In the spirit of mutual learning purposes, to share this series of articles, welcome reprint, please specify the author, respect for copyright, thank you Please correct me if the article is not in the wrong place, learn together You can also access my csdn:http

the top layer. UA can update sessions through new offer/answer interactions. However, a new offer cannot be initiated before the old offer/answer interaction ends. 1.Initiate an initial offer: Although SDP (rfc4566) allows multiple sessions in an SDP message, SDP messages with the offer/answer model can only contain one conversation description. 2.Offer can cont

Reprint address (http://www.cnblogs.com/qingquan/archive/2011/08/02/2125585.html) I. Introduction of SDP protocolThe SDP is completely a session description format-it is not a transport protocol-it uses only different appropriate transport protocols, including session Notification Protocol (SAP), Session Initiation Protocol (SIP), real-time Streaming Protocol (RTSP), MIME Extension Protocol e-mail, and Hype

RTP/RTCP/RTSP/SIP/SDP relationship1. RTPReal-time Transport Protocol is a Transport layer protocol for multimedia traffic on the Internet. The RTP protocol details the standard packet format for transmitting audio and video over the Internet. RTP protocols are commonly used in streaming media systems (with the RTCP protocol), video conferencing and a Push-to-talk system (with either a/p or SIP), making it the technical foundation of the IP telephony i

SDP application in the SIP protocol and SDPSIP Application The SDP is used to construct the message bodies of INVITE, 200OK, and ACK messages for the master and called users to exchange media information. 1. Media Stream Configuration (1) The description of the primary called media must correspond to the nth media stream (m =) of the primary called, and both contain a = rtpmap. this aims to adapt to the con