SIP Headers' common rules
option-tag =
token
; see IANA
; 100rel → RFC 3262 – Section 8.1
; 199 → RFC 6228 – Section 11.2
; answermode → RFC 5373 – Section 8.3
; early-session → RFC 3959 – Section 9
; eventlist → RFC 4662 – Section 8.1
; explicitsub → RFC 7614 – Section 9.1
; from-change → RFC 4916 – Section 6
; geolocation-http → RFC 6442 – Section 8.3
; geolocation-sip → RFC 6442 – Section 8.3
; gin → RFC 6140 – Section 9.1
; gruu → RFC 5627 – Section 11.3
; histinfo → RFC 7044 – Section 14.1
; ice → RFC 5768 – Section 7.1
; join → RFC 3911 – Section 10.2
; multiple-refer → RFC 5368 – Section 11
; norefersub → RFC 4488 – Section 7
; nosub → RFC 7614 – Section 9.2
; outbound → RFC 5626 – Section 11.4
; path → RFC 3327 – Section 7
; policy → RFC 6794 – Section 6.4
; precondition → RFC 3312 – Section 11
; pref → RFC 3840 – Section 12.3
; privacy → RFC 3323 – Section 7
; recipient-list-invite → RFC 5366 – Section 8
; recipient-list-message → RFC 5365 – Section 11
; recipient-list-subscribe → RFC 5367 – Section 9.2
; record-aware → RFC 7866 – Section 11.1.2
; replaces → RFC 3891 – Section 9.2
; resource-priority → RFC 4412 – Section 12.3
; sdp-anat → RFC 4092 – Section 7
; sec-agree → RFC 3329 – Section 6.5
; siprec → RFC 7866 – Section 11.1.1
; tdialog → RFC 4538 – Section 11.3
; timer → RFC 4028 – Section 12.3
; uui → RFC 7433 – Section 6.6
; see IANA
; 100rel → RFC 3262 – Section 8.1
; 199 → RFC 6228 – Section 11.2
; answermode → RFC 5373 – Section 8.3
; early-session → RFC 3959 – Section 9
; eventlist → RFC 4662 – Section 8.1
; explicitsub → RFC 7614 – Section 9.1
; from-change → RFC 4916 – Section 6
; geolocation-http → RFC 6442 – Section 8.3
; geolocation-sip → RFC 6442 – Section 8.3
; gin → RFC 6140 – Section 9.1
; gruu → RFC 5627 – Section 11.3
; histinfo → RFC 7044 – Section 14.1
; ice → RFC 5768 – Section 7.1
; join → RFC 3911 – Section 10.2
; multiple-refer → RFC 5368 – Section 11
; norefersub → RFC 4488 – Section 7
; nosub → RFC 7614 – Section 9.2
; outbound → RFC 5626 – Section 11.4
; path → RFC 3327 – Section 7
; policy → RFC 6794 – Section 6.4
; precondition → RFC 3312 – Section 11
; pref → RFC 3840 – Section 12.3
; privacy → RFC 3323 – Section 7
; recipient-list-invite → RFC 5366 – Section 8
; recipient-list-message → RFC 5365 – Section 11
; recipient-list-subscribe → RFC 5367 – Section 9.2
; record-aware → RFC 7866 – Section 11.1.2
; replaces → RFC 3891 – Section 9.2
; resource-priority → RFC 4412 – Section 12.3
; sdp-anat → RFC 4092 – Section 7
; sec-agree → RFC 3329 – Section 6.5
; siprec → RFC 7866 – Section 11.1.1
; tdialog → RFC 4538 – Section 11.3
; timer → RFC 4028 – Section 12.3
; uui → RFC 7433 – Section 6.6
accept-param =
qvalue =
generic-param =
gen-value =
name-addr =
display-name =
addr-spec =
callid =
delta-seconds =
1*DIGIT