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ABNF for SIP Headers

(93)

Accept   Accept‑Contact   Accept‑Encoding   Accept‑Language   Accept‑Resource‑Priority   Alert‑Info   Allow   Allow‑Events   Answer‑Mode   Authentication‑Info   Authorization   Call‑ID   Call‑Info   Contact   Content‑Disposition   Content‑Encoding   Content‑ID   Content‑Language   Content‑Length   Content‑Type   CSeq   Date   Error‑Info   Event   Expires   Feature‑Caps   Flow‑Timer   From   Geolocation   Geolocation‑Error   Geolocation‑Routing   History‑Info   Identity   Identity‑Info   Info‑Package   In‑Reply‑To   Join   Max‑Breadth   Max‑Forwards   MIME‑Version   Min‑Expires   Min‑SE   Organization   Path   Permission‑Missing   Policy‑Contact   Policy‑ID   Priority   Privacy   Priv‑Answer‑Mode   Proxy‑Authenticate   Proxy‑Authorization   Proxy‑Require   RAck   Reason   Record‑Route   Recv‑Info   Refer‑Events‑At   Refer‑Sub   Refer‑To   Referred‑By   Reject‑Contact   Replaces   Reply‑To   Request‑Disposition   Require   Resource‑Priority   Retry‑After   Route   RSeq   Security‑Client   Security‑Server   Security‑Verify   Server   Service‑Route   Session‑Expires   Session-ID   SIP‑ETag   SIP‑If‑Match   Subject   Subscription‑State   Supported   Suppress‑If‑Match   Target‑Dialog   Timestamp   To   Trigger‑Consent   Unsupported   User‑Agent   UUI (User‑to‑User)   Via   Warning   WWW‑Authenticate