| Description | This object reflects the default time interval the Registrar
considers registrations to be active. The value is used to
compute the Expires header in the REGISTER response. If a user
agent requests a time interval shorter than specified by this
object, the Registrar SHOULD honor that request. If a Contact
entry does not have an 'expires' parameter, the value of the
Expires header field is used instead. If a Contact entry has no
'expires' parameter and no Expires header field is present,
the value of this object is used as the default value. |