CAPA SESION

Capa 5 Modelo OSI "Sesión"

Nivel de sesión: La capa de sesión establece, administra y termina las sesiones entre las aplicaciones. Leer más.
The session layer of the OSI model is responsible for session checkpointing and recovery. It allows information of different streams, perhaps originating from different sources, to be properly combined or synchronized.

Aplicaciones:

• Conferencia WEB: In which the streams of audio and video must be synchronous to avoid so-called lip synch problems. Floor control ensures that the person displayed on screen is the current speaker.
• TV live: Where streams of audio and video need to be seamlessly merged and transitioned from one to the other to avoid silent airtime or excessive overlap.

Protocolos:

• ADSP (AppleTalk Data Stream Protocol): Is a proprietary suite of networking protocols developed by Apple Inc. for their Mac computers. AppleTalk included a number of features that allowed local area networks to be connected with no prior setup or the need for a centralized router or server of any sort. Read more.
• H.245 (Call Control Protocol for Multimedia Communication):  Is a control channel protocol used with[in] e.g. H.323 and H.324 communication sessions, and involves the line transmission of non-telephone signals. It also offers the possibility to be tunneled within H.225.0 call signaling messages. This eases firewall traversing. Read more.
• iSNS (Internet Storage Name Service): Provides management services similar to those found in Fibre Channel networks, allowing a standard IP network to operate in much the same way that a Fibre Channel storage area network does. Read more.
• L2F (Layer 2 Forwarding Protocol): Is a tunneling protocol developed by Cisco Systems, Inc. to establish virtual private network connections over the Internet. L2F does not provide encryption or confidentiality by itself; It relies on the protocol being tunneled to provide privacy. L2F was specifically designed to tunnel Point-to-Point Protocol (PPP) traffic. Read more.
• NetBIOS (Network Basic Input Output System): It provides services related to the session layer of the OSI model allowing applications on separate computers to communicate over a local area network. Read more.
• PAP (Password Authentication Protocol): Is used by Point to Point Protocol to validate users before allowing them access to server resources. Almost all network operating system remote servers support PAP. Read more.
• RPC (Remote Procedure Call Protocol): Is an inter-process communication that allows a computer program to cause a subroutine or procedure to execute in another address space (commonly on another computer on a shared network) without the programmer explicitly coding the details for this remote interaction. Read more.
• RTCP (Real-time Transport Control Protocol): Provides out-of-band statistics and control information for an RTP flow. It partners RTP in the delivery and packaging of multimedia data, but does not transport any media streams itself. Read more. 
• SMPP (Short Message Peer-to-Peer): Is a telecommunications industry protocol for exchanging SMS messages between SMS peer entities such as short message service centers and/or External Short Messaging Entities. It is often used to allow third parties (e.g. value-added service providers like news organizations) to submit messages, often in bulk. Read more.
• SOCKS: Is an Internet protocol that routes network packets between a client and server through a proxy server. SOCKS5 additionally provides authentication so only authorized users may access a server. Practically, a SOCKS server will proxy TCP connections to an arbitrary IP address as well as providing a means for UDP packets to be forwarded. Read more.
• SDP (Sockets Direct Protocol): The purpose of the Sockets Direct Protocol is to provide an RDMA accelerated alternative to the TCP protocol on IP. The goal is to do this in a manner which is transparent to the application. Read more.