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ABNF for SIP:  Uniform Resource Identifiers

 

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|   SIP-URI   |   userinfo   |   hostport   |   uri‑parameters   |   headers   |   absoluteURI   |   tel‑URI   |


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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