CalConnect Administrative

CC/A 1705:2017
Report on CalConnect Conference XL, September 27-29, 2017
CalConnect Administrative




The Calendaring and Scheduling Consortium (“CalConnect”) is a global non-profit organization with the aim to facilitate interoperability of technologies across user-centric systems and applications.

CalConnect works closely with liaison partners including international organizations such as ISO, OASIS and M3AAWG.

The procedures used to develop this document and those intended for its further maintenance are described in the CalConnect Directives.

In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the CalConnect Directives.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CalConnect shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the CalConnect list of patent declarations received (see

Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.

This document was prepared by Technical Committee CHAIRS.


CalConnect XL took place September 27-29, 2017, hosted by Open-Xchange in Cologne, Germany. The CalConnect Test Event (Monday, Tuesday, and Wednesday morning) and Conference (Wednesday afternoon, Thursday and Friday) were held at Komed House, a conference facility in the Cologne Media Park.

The CalConnect Conference was attended by 20 people from 12 members plus a guest from GFI. The Test Event/Developers Forum had 10 participants from 7 members and was largely devoted to the forum and CalDAV Tester rather than specific testing.

The Conference focussed on strategic and possible work items in addition to ongoing work, and finished with the CalConnect Plenary Session on Friday afternoon. The Conference agenda with notes on the discussion topics may be found at CalConnect XL Conference Schedule.

Report on CalConnect Conference XL, September 27-29, 2017

1.  Status of documents since last conference

Much of the ongoing work in CalConnect is focused on specifications to become internet draft submissions to the IETF and ultimately be progressed to publication as RFCs (Proposed Standards), rather than directly published by CalConnect itself.

Specifications in progress and not yet published are generally resident on GitHub either in our public or private areas.

1.1.  CalConnect Drafts to be Published as Informational RFCs

  • CalDAV Managed Attachments (TC CALENDAR)

1.2.  CalConnect Drafts in CALEXT Working Group Last Call at IETF

  • Event Publishing Extensions to iCalendar (TC CALENDAR)

1.3.  CalConnect Drafts in Progressing at CALEXT Working Group at IETF

  • Improved Support for iCalendar Relationships (TC CALENDAR

1.4.  New and Updated CalConnect Drafts at the IETF

  • Push Discovery and Notification Dispatch Protocol (TC CALENDAR)

  • Calendar Subscription Upgrades

  • JSCalendar: A JSON representation of calendar data

2.  General status and announcements

Ronald Tse of Ribose was elected the sixth CalConnect Director, and was appointed Director, External Relationships.

CalConnect has established a formal Category A Liaison with ISO/TC 211 and is exploring a similar liaison with ISO/TC 154. We are also exploring a joint liaison with M3AAWG.

4.  Plenary meeting

Oath (combined AOL and Yahoo) will host the Winter 2018 CalConnect XLI in Sunnyvale, California.

Specific dates were set for CalConnect XLI and CalConnect XLIII (see below).

5.  Future events

The general format of the CalConnect Week is:

6.  Pictures from CalConnect XL

Pictures courtesy of Thomas Schäfer, 1&1

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