VOIP ch 13

the media functions are separated from call-signaling functions
Used in large trunking gateways and residential gateways

call the call agent
Handles call signaling

Controlled by the MGC
conversion of TDM to RTCP streams

uses UDP
Uses Session Description Protocol (SDP)
only two type of media (audio data)

when the MGCP connection are grouped into a call

device that is tramsmitting data

requested or recieved the data

an interface on an MG that terminates a circuit originating from a public switched telephone network (PSTN) Need what?

an announcement server endpoint that plays/streams the announcement based on a command from the call agent. Need What

endpoint is identified by an endpoint-identifier that has two components

an association between two endpoints with the purpose of transmitting data between them.

by connecting the endpoint to a multipoint session.

*Create a connection on each endpoint that will be involved in a call. what is is designated by*

links all connections that are associated with a call. This identifier enables accounting or billing mediation to occur for calls

assign call identifers which are unique for each
call and are globally unique throughout the system

links all connections that are associated with a call. This identifier enables accounting or billing mediation to occur for calls.

The transactions are composed of a command and a

as called by ITU

as called by IETF

terminates the device transmitting or reciving the call

its connection centric

endpoint centric