| 摘要 |
<p>A presence context (62,64,66) is established in a presence access layer 'PAL' (43) coupled to a presence server (22). An activity log (72,74,76,320,340) is associated with the presence context. Entries (326,346) are created in the activity log, each entry identifying, chronicling, and documenting an activity applicable to the presence context that was performed in the presence access layer.</p> |
