For example, if the session is a Webinar,
the Web site is where participants can go for additional information about the
Webinar (such as login information).
?– e = e-mail address This usually contains the e-mail address of the creator, where
participants can acquire more information.
?– p = phone number The contact phone number where more information can be
provided about the session.
?– c = connection information Additional information about the connection for
the session.
?– b = bandwidth information The amount of bandwidth to be provided for the
session.
?– z = time zone adjustments Any time zone adjustments to be considered.
?– k = encryption keys The encryption keys for the session.
?– a = zero or more session attribute lines The number of attribute lines in
the SDP.
Time Description
?– t = time the session is active What time does the session start, for example.
?– r = zero or more repeat times How many times the session repeats.
Media Description
?– m = media name and transport address Name of the media, if applicable.
?– i = media title Title of the media (Travis??™s Vacation Film, e.g.).
Session Initiation Protocol (SIP) 85
?– c = connection information Additional connection information.
?– b = bandwidth information Bandwidth required to support the media.
?– k = encryption key Encryption keys required.
?– a = zero or more attribute lines Number of attribute lines provided.
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