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ABNF Notation
ABNF for SIP Private Headers
(31 of 33)
SIP Header — Service-Interact-Info
3GPP TS 24.229
–
Clause 7.2.14
Service-Interact-Info
=
"
Service‑Interact‑Info
"
HCOLON
executed‑service‑params
*(
COMMA
executed‑service‑params
)
executed-service-params
=
executed‑service
/ 
avoid‑service
executed-service
=
"
executed-service
"
EQUAL
service‑spec
avoid-service
=
"
avoid-service
"
EQUAL
service‑spec
service-spec
=
service‑id
*(
SEMI
service‑param
)
service-id
=
token
/
quoted‑string
service-param
=
generic‑param