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A. LDAP attributes used by NetMeeting

Distinguished Names (DNs) used by NetMeeting must always end in "objectclass=rtperson". The following LDAP attributes are used by NetMeeting:

Table A-1. NetMeeting LDAP attributes

objectClass must be "RTPerson"
cn alias used for directory lookups; must be present
sappid must be "ms-netmeeting"
sprotid must be "h323"
sprotmimetype typically "text/h323"; unused
smimetype typically "text/iuls"; unused
sflags must be 1
sappguid unknown
smodop unknown
sipaddress decimal IP address
sport TCP port number; unused
ssecurity unknown
sttl entry timeout value in minutes
c two digit country code
rfc822mailbox email address
givenname optional
surname optional
comment optional
location optional
ilsa39321630 1 = personal; 2 = business; 4 = adult
ilsa32833566 0 = not audio capable; 1 = audio capable
ilsa32964638 0 = not video capable; 1 = video capable
ilsa26214430 0 = not in a call; 1 = currently in a call
ilsa26279966 unknown

NetMeeting uses a non-standard means of refreshing dynamic entries. The Microsoft server maintains an "sttl" attribute, which is a time to live for the entry in minutes. A search request for attribute "sttl" resets the timer. If the timer goes to zero, the entry is supposed to disappear from the database. Of course, the sttl attribute doesn't actually exist in the database, and the client doesn't bother to give us the whole DN it wants updated, only supplying the "cn" component in the search request.