[Ietf-calsify] Section 4.6.6 Alarm Component: Restriction over the
value of the ACTION property
bernard.desruisseaux at oracle.com
Tue Sep 19 07:31:22 PDT 2006
According to section 184.108.40.206 Action of RFC 2445, the ACTION property
can take the following values:
> actionvalue = "AUDIO" / "DISPLAY" / "EMAIL" / "PROCEDURE"
> / iana-token / x-name
On the other hand, section 4.6.6 Alarm Component restricts the values
that the ACTION property can take when used in a VALARM component to
the following: AUDIO, DISPLAY, EMAIL, and PROCEDURE. Check the last
sentence of the following paragraph:
> The "ACTION" property is used within the "VALARM" calendar component
> to specify the type of action invoked when the alarm is triggered.
> The "VALARM" properties provide enough information for a specific
> action to be invoked. It is typically the responsibility of a
> "Calendar User Agent" (CUA) to deliver the alarm in the specified
> fashion. An "ACTION" property value of AUDIO specifies an alarm that
> causes a sound to be played to alert the user; DISPLAY specifies an
> alarm that causes a text message to be displayed to the user; EMAIL
> specifies an alarm that causes an electronic email message to be
> delivered to one or more email addresses; and PROCEDURE specifies an
> alarm that causes a procedure to be executed. The "ACTION" property
> MUST specify one and only one of these values.
In my opinion, one should be allowed to specify an ACTION property
with a "iana-token" or "x-name" value in a VALARM component.
A vendor might want to use "x-name" values (or register iana-token)
for alarms that should be delivered by SMS, XMPP, Fax, Voice, etc.
More information about the Ietf-calsify