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ABNF Notation
Session Description
Addressing
generic rules
"a=" SDP Attributes
SDP attributes defined in
RFC 2848 – the PINT Service Protocol
RFC 2848
–
Appendix A
a=
clir
a=
Q763-nature
a=
Q763-plan
a=
Q763-INN
a=
phone-contex
a=
require
attribute
=/
clir‑attribute
/
q763‑nature‑attribute
/
q763-plan‑attribute
/
q763‑INN‑attribute
/
phone‑context‑attribute
/
strict‑attribute
clir-attribute
=
clir‑tag
"
:
" ( "
true
" / "
false
" )
; see
Clause 3.4.3.2 of RFC 2848
clir-tag
=
"
clir
"
q763-nature-attribute
=
q763‑nature‑tag
"
:
"
q763‑natures
; see
Clause 3.4.3.3 of RFC 2848
q763-nature-tag
=
"
q763-nature
"
q763-natures
=
( "
1
" / "
2
" / "
3
" / "
4
" )
q763-plan-attribute
=
q763‑plan‑tag
"
:
"
q763‑plans
; see
Clause 3.4.3.3 of RFC 2848
q763-plan-tag
=
"
q763-plan
"
q763-plans
=
( "
1
" / "
2
" / "
3
" / "
4
" / "
5
" / "
6
" / "
7
" )
q763-INN-attribute
=
q763‑INN‑tag
"
:
"
q763‑INNs
; see
Clause 3.4.3.3 of RFC 2848
q763-INN-tag
=
"
q763-INN
"
q763-INNs
=
( "
0
" / "
1
" )
phone-context-attribute
=
phone‑context‑tag
"
:
"
phone‑context‑ident
; see
Clause 3.4.3.1 of RFC 2848
phone-context-tag
=
"
phone‑context
"
phone-context-ident
=
network‑prefix
/
private‑prefix
network-prefix
=
intl‑network‑prefix
/
local‑network‑prefix
intl-network-prefix
=
"
+
" 1*
DIGIT
local-network-prefix
=
1*
DIGIT
private-prefix
=
1*
excldigandplus
0*
<uric>
excldigandplus
=
(0x21-0x2d, 0x2f, 0x40-0x7d)
strict-attribute
=
"
require:
"
att‑tag‑list
; see
Clause 3.4.4 of RFC 2848
att-tag-list
=
1(
PINT‑att‑tag‑list
/
att-field
/
pint‑fmt‑tag‑list
) *( "
,
" (
PINT‑att‑tag‑list
/
att-field
/
pint‑fmt‑tag‑list
) )
PINT-att-tag-list
=
(
phone‑context‑tag
/
clir‑tag
/
q763‑nature‑tag
/
q763‑plan‑tag
/
q763‑INN‑tag
)
pint-fmt-tag-list
=
(
uri‑tag
/
opr‑tag
/
spr‑tag
)
uri-tag
=
"
uri
"
opr-tag
=
"
opr
"
spr-tag
=
"
spr
"