---
title: calFBURL
description: "Protocol-independent location for a calendaring and scheduling client to retrieve information about when a user is busy as an iCalendar object with one or more \"VFREEBUSY\" calendar components."
component: pingds
version: 8.1
page_id: pingds:schemaref:at-calFBURL
canonical_url: https://docs.pingidentity.com/pingds/8.1/schemaref/at-calFBURL.html
---

# calFBURL

Protocol-independent location for a calendaring and scheduling client to retrieve information about when a user is busy as an iCalendar object with one or more "VFREEBUSY" calendar components.

|                             |                                                                |
| --------------------------- | -------------------------------------------------------------- |
| *OID*                       | 1.2.840.113556.1.4.479                                         |
| *Names*                     | calFBURL                                                       |
| *Syntax*                    | [IA5String](s-IA5String.html)                                  |
| *Equality matching rule*    | [caseIgnoreMatch](mr-caseIgnoreMatch.html)                     |
| *Ordering matching rule*    | [caseIgnoreOrderingMatch](mr-caseIgnoreOrderingMatch.html)     |
| *Substring matching rule*   | [caseIgnoreSubstringsMatch](mr-caseIgnoreSubstringsMatch.html) |
| *Single value*              | false: multiple values allowed                                 |
| *User modification allowed* | true                                                           |
| *Usage*                     | userApplications                                               |
| *Origin*                    | [RFC 2739](https://datatracker.ietf.org/doc/html/rfc2739)      |
| *Schema file*               | 03-rfc2739.ldif                                                |
| *Used by*                   | [calEntry](oc-calEntry.html)                                   |