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SIP/SIPS  userinfo  hostport  uri‑parameters  headers  absoluteURI  tel‑URI

ABNF for SIP/SIPS URI — userinfo

Section 19.1.1 of RFC 3261  and  ABNF in RFC 3261

userinfo =
( user /  telephone‑subscriber )  [ ":"  password ]  "@"

; examples:
;   sip:alice@atlanta.com
;   sip:alice:secretword@atlanta.com;transport=tcp
;   sip:+1-212-555-1212:1234@gateway.com;user=phone

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user  =
1*( unreserved /  escaped /  user-unreserved )
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user-unreserved =
"&" /  "=" /  "+" /  "$" /  "," /  ";" /  "?" /  "/"
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password =
*( unreserved /  escaped /  "&" /  "=" /  "+" /  "$" /  "," )
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