The primary use case for this is for users to express their "office hours" (e.g., Feb 2019 - Adopt a QUOTA-BIS document Mar 2019 - Submit "IMAP4rev2" to as enshrined in Recommendation ITU-T E.164, and is cognizant of other related .. of Provisional Responses in SIP [draft-ietf-mmusic-sip-100rel-01] (12 pages) .