
290 ◾ IP Communications and Services for NGN
Method Description
DESCRIBE Retrieval of the media description
GET_PARAMETER Retrieval of the value of a parameter
OPTIONS Querying of the available methods
PLAY Starts sending data
RECORD Starts receiving data
PAUSE Temporal halting of delivery of streams
SETUP Specifies the transport mechanism
REDIRECT Informs to connect another server location
SET_PARAMETER Request to set the value of a parameter
TEARDOWN Pulls down the stream delivery and frees resources
e RTSP has the following three states—INIT, READY, PLAYING—as
shown in Figure 16.2.
SETUP: the server allocates resources for a client/server session. ...