The attribute
lines are
?– i = media title
?– c = connection information
?– b = bandwidth information
?– k = encryption key
?– a = zero or more attribute lines
SDP-media-name This AVP is also derived from the SDP portion of a SIP message
and contains the contents of the ???m=media name??? line.
SDP-session-description Like the SDP-media-description, this AVP also contains
the contents of an attribute line from the SDP portion of a SIP message. While the
SDP-media-description identifies the type of media, this is used to describe the type of
session.
Served-party-IP-address If the P-CSCF is providing service to the calling or the
called party, then the IP address of either party (or both parties) is provided here.
Service-ID The media resource function controller (MRFC) fills this AVP identifying
the type of service that is being provided (i.e., conference bridge).
196 Chapter 7
Service-information The format for this AVP varies depending on the specific service
being identified. There are several different types of information carried within
the specific parameters of this AVP, providing information about the session. The other
AVPs within this group and contained in the service-information AVP are
?– PS-information
?– WLAN-information
?– IMS-information
?– MMS-information
?– LCS-information
SIP-method This parameter identifies the SIP method (INVITE, UPDATE, etc.
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