Cisco TelePresence Administrator's Manual page 387

Reference material
Applications Presence Server Publication ExpireDelta: <30..7200>
Specifies the maximum time (in seconds) within which a publisher must refresh its publication.
Default: 1800
Example: xConfiguration Applications Presence Server Publication ExpireDelta: 1800
Applications Presence Server Subscription ExpireDelta: <30..7200>
Specifies the maximum time (in seconds) within which a subscriber must refresh its subscription.
Default: 3600
Example: xConfiguration Applications Presence Server Subscription ExpireDelta: 3600
Applications Presence User Agent ExpireDelta: <1..65534>
Specifies the lifetime value (in seconds) the Presence User Agent will advertise in the PUBLISH messages it
sends to the Presence Server. The Presence User Agent will refresh its PUBLISH messages at 75% of this value
(to keep them active). The Presence Server may reduce this value in its responses.
Default: 3600
Example: xConfiguration Applications Presence User Agent ExpireDelta: 3600
Applications Presence User Agent Mode: <On/Off>
Enables and disables the SIMPLE Presence User Agent (PUA). The PUA provides presence information on
behalf of registered endpoints. SIP mode must also be enabled for the PUA to function.
Default: Off
Example: xConfiguration Applications Presence User Agent Mode: Off
Applications Presence User Agent Presentity Idle Status: <Offline/Online>
Default presentity status published by the Presence User Agent.
Online: publish registered endpoints as online.
Offline: publish registered endpoints as offline.
Default: Online
Example: xConfiguration Applications Presence User Agent Presentity Idle Status: Online
Applications Presence User Agent RetryDelta: <1..65534>
Specifies the time (in seconds) after which the Presence User Agent will attempt to resend a PUBLISH to the
Presence Server. This will occur if the original attempt failed due to resource issues or other transitory errors.
Default: 1800
Example: xConfiguration Applications Presence User Agent RetryDelta: 1800
Authentication ADS ADDomain: <S: 0,255>
The Kerberos realm used when the VCS joins the AD domain. Note: this field is case sensitive.
Example: xConfiguration Authentication ADS ADDomain: "CORPORATION.INT"
Authentication ADS Clockskew: <1..65535>
Maximum allowed clockskew between the VCS and the KDC before the Kerberos message is assumed to be
invalid (in seconds).
Default: 300
Example: xConfiguration Authentication ADS Clockskew: 300
Cisco VCS Administrator Guide (X7.1) Page 387 of 479