HTML Version of ABNF for <draft-ietf-sip-rfc2543bis-01.abnf>

This HTML version of the ABNF from file <draft-ietf-sip-rfc2543bis-01.abnf> is automatically generated using the ABNF2HTML $Revision: 1.26 $ tool provided by Inet Technologies, Inc. written by Brian Bidulock.

This version of ABNF is for informational purposes only and is intended as a tool to help read the ABNF specification. Please see the Copyright and Disclaimers at the end of this document. For definitive syntax descriptions, please refer to the source IETF documents.

The protocol syntax is presented in ABNF according to RFC2234 with extensions from RFC822. This ABNF browser was generated from file <draft-ietf-sip-rfc2543bis-01.abnf> on Fri Aug 11 01:30:44 CDT 2000.

This document consists of:

• ABNF Specification,
• Symbol Cross Reference Table,
• General Directions,
• Copyright, and,
• Disclaimers.

The productions for the ABNF specification are provided below.

ABNF Productions

Rule Name		Production or Comment
SIP-URL	=	"sip:" [userinfo "@"] hostport url-parameters [headers]
userinfo	=	[user | telephone-subscriber] [":" password]
user	=	*( unreserved | escaped | "&" | "=" | "+" | "$" | "," | ";" | "?" | "/" )
telephone-subscriber	=	<defined in [RFC2806] Section 2.2>
password	=	*( unreserved | escaped | "&" | "=" | "+" | "$" | "," )
hostport	=	host [":" port]
host	=	hostname | IPv4address | IPv6reference
hostname	=	*( domainlabel "." ) toplabel ["."]
domainlabel	=	alphanum | alphanum *( alphanum | "-" ) alphanum
toplabel	=	alpha | alpha *( alphanum | "-" ) alphanum
IPv4address	=	1*3DIGIT "." 1*3DIGIT "." 1*3DIGIT "." 1*3DIGIT
IPv6reference	=	"[" IPv6address "]"
IPv6address	=	hexpart [":" IPv4address]
hexpart	=	hexseq | hexseq "::" [hexseq] | "::" [hexseq]
hexseq	=	hex4 *( ":" hex4 )
hex4	=	1*4HEX
port	=	1*DIGIT
url-parameters	=	*( ";" url-parameter )
url-parameter	=	transport-param | user-param | method-param | ttl-param | maddr-param | other-param
transport-param	=	"transport=" ( "udp" | "tcp" | "sctp" | "tls" | other-transport )
other-transport	=	token
ttl-param	=	"ttl=" ttl
ttl	=	1*3DIGIT  ; 0 to 255
maddr-param	=	"maddr=" host
user-param	=	"user=" ( "phone" | "ip" | other-user )
other-user	=	token
method-param	=	"method=" Method
tag-param	=	"tag=" token
other-param	=	pname ["=" pvalue]
pname	=	1*paramchar
pvalue	=	1*paramchar
paramchar	=	param-reserved | unreserved | escaped
param-reserved	=	"[" | "]" | "/" | "?" | ":" | "&" | "+" | "$"
headers	=	"?" header *( "&" header )
header	=	hname "=" hvalue
hname	=	1*( hnv-unreserved | unreserved | escaped )
hvalue	=	*( hnv-unreserved | unreserved | escaped )
hnv-unreserved	=	"[" | "]" | "/" | "?" | ":" | "+" | "$"
absoluteURI	=	<defined in [RFC2068] Secion 3.2.1>
SIP-message	=	Request | Response
generic-message	=	start-line *message-header CRLF [message-body]
start-line	=	Request-Line |   ;Section 4.1 Status-Line  ;Section 5.1
message-header	=	( general-header | request-header | response-header | entity-header )
message-body	=	<defined in [RFC2068] Section 4.3>
general-header	=	Accept  ; Section 6.6 | Accept-Encoding  ; Section 6.7 | Accept-Language  ; Section 6.8 | Call-ID  ; Section 6.12 | Call-Info  ; Section 6.13 | Contact  ; Section 6.14 | CSeq  ; Section 6.20 | Date  ; Section 6.21 | Encryption  ; Section 6.22 | From  ; Section 6.24 | MIME-Version  ; Section 6.28 | Organization  ; Section 6.29 | Record-Route  ; Section 6.34 | Require  ; Section 6.35 | Supported  ; Section 6.41 | Timestamp  ; Section 6.42 | To  ; Section 6.43 | User-Agent  ; Section 6.45 | Via  ; Section 6.46
entity-header	=	Allow  ; Section 6.10 | Content-Disposition  ; Section 6.15 | Content-Encoding  ; Section 6.16 | Content-Language  ; Section 6.17 | Content-Length  ; Section 6.18 | Content-Type  ; Section 6.19 | Expires  ; Section 6.23
request-header	=	Alert-Info  ; Section 6.9 | Authorization  ; Section 6.11 | Hide  ; Section 6.25 | In-Reply-To  ; Section 6.26 | Max-Forwards  ; Section 6.27 | Priority  ; Section 6.30 | Proxy-Authorization  ; Section 6.32 | Proxy-Require  ; Section 6.33 | Route  ; Section 6.38 | Response-Key  ; Section 6.36 | Subject  ; Section 6.40
response-header	=	Proxy-Authenticate  ; Section 6.31 | Retry-After  ; Section 6.37 | Server  ; Section 6.39 | Unsupported  ; Section 6.44 | Warning  ; Section 6.47 | WWW-Authenticate  ; Section 6.48
Request	=	Request-Line   ; Section 4.1 *( general-header | request-header | entity-header ) CRLF [message-body]  ; Section 8
Request-Line	=	Method SP Request-URI SP SIP-Version CRLF
Request-URI	=	SIP-URL | absoluteURI
Method	=	"INVITE" | "ACK" | "OPTIONS" | "BYE" | "CANCEL" | "REGISTER" | extension-method
extension-method	=	token
SIP-Version	=	"SIP/2.0"
option-tag	=	token
Response	=	Status-Line   ; Section 5.1 *( general-header | response-header | entity-header ) CRLF [message-body]  ; Section 8
Status-Line	=	SIP-version SP Status-Code SP Reason-Phrase CRLF
Status-Code	=	Informational  ;Fig. 4 | Success  ;Fig. 4 | Redirection  ;Fig. 5 | Client-Error  ;Fig. 6 | Server-Error  ;Fig. 7 | Global-Failure  ;Fig. 8 | extension-code
extension-code	=	3DIGIT
Reason-Phrase	=	*<TEXT-UTF8, excluding CR, LF>
Informational	=	"100"  ; Trying | "180"  ; Ringing | "181"  ; Call Is Being Forwarded | "182"  ; Queued | "183"  ; Session Progress
Success	=	"200"  ; OK
Redirection	=	"300"  ; Multiple Choices | "301"  ; Moved Permanently | "302"  ; Moved Temporarily | "305"  ; Use Proxy | "380"  ; Alternative Service
Client-Error	=	"400"  ; Bad Request | "401"  ; Unauthorized | "402"  ; Payment Required | "403"  ; Forbidden | "404"  ; Not Found | "405"  ; Method Not Allowed | "406"  ; Not Acceptable | "407"  ; Proxy Authentication Required | "408"  ; Request Timeout | "409"  ; Conflict | "410"  ; Gone | "411"  ; Length Required | "413"  ; Request Entity Too Large | "414"  ; Request-URI Too Large | "415"  ; Unsupported Media Type | "420"  ; Bad Extension | "480"  ; Temporarily not available | "481"  ; Call Leg/Transaction Does Not Exist | "482"  ; Loop Detected | "483"  ; Too Many Hops | "484"  ; Address Incomplete | "485"  ; Ambiguous | "486"  ; Busy Here | "487"  ; Request Cancelled | "488"  ; Not Acceptable Here
Server-Error	=	"500"  ; Internal Server Error | "501"  ; Not Implemented | "502"  ; Bad Gateway | "503"  ; Service Unavailable | "504"  ; Gateway Time-out | "505"  ; SIP Version not supported
Global-Failure	=	"600"  ; Busy Everywhere | "603"  ; Decline | "604"  ; Does not exist anywhere | "606"  ; Not Acceptable
message-header	=	field-name ":" [field-value] CRLF
field-name	=	token
field-value	=	*( field-content | LWS )
field-content	=	< the OCTETs making up the field-value and consisting of either *TEXT-UTF8 or combinations of token, separators, and quoted-string>
Accept	=	<defined in [RFC2068] Section 14.1>
Accept-Encoding	=	<defined in [RFC2068] Section 14.3>
Accept-Language	=	<defined in [RFC2068] Section 14.4>
Alert-Info	=	"Alert-Info" ":" #( "<" URI ">" *( ";" generic-param ) )
Allow	=	"Allow" ":" 1#Method
callid	=	token ["@" token]
Call-ID	=	( "Call-ID" | "i" ) ":" callid
Call-Info	=	"Call-Info" ":" #( "<" URI ">" *( ";" info-param ) )
info-param	=	"purpose" "=" ( "icon" | "info" | "card" | token ) | generic-param
Contact	=	( "Contact" | "m" ) ":" ( "*" | ( 1#( ( name-addr | addr-spec ) *( ";" contact-params ) ) ) )
name-addr	=	[display-name] "<" addr-spec ">"
addr-spec	=	SIP-URL | URI
display-name	=	*token | quoted-string
contact-params	=	"q" "=" qvalue | "action" "=" "proxy" | "redirect" | "expires" "=" delta-seconds | DQUOTE SIP-date DQUOTE | contact-extension
qvalue	=	<defined in [RFC2068] Section 3.9>
delta-seconds	=	<defined in [RFC2068] Section 3.3.2>
contact-extension	=	generic-param
Content-Disposition	=	"Content-Disposition" ":" disposition-type *( ";" disposition-param )
disposition-type	=	"render" | "session" | "icon" | "alert" | disp-extension-token
disposition-param	=	"handling" "=" ( "optional" | "required" | other-handling ) | generic-param
other-handling	=	token
disp-extension-token	=	token
Content-Encoding	=	( "Content-Encoding" | "e" ) ":" 1#content-coding
content-coding	=	<defined in [RFC2068] Section 3.5>
Content-Language	=	<defined in [RFC2068] Section 14.13>
Content-Length	=	( "Content-Length" | "l" ) ":" 1*DIGIT
Content-Type	=	( "Content-Type" | "c" ) ":" media-type
media-type	=	<defined in [RFC2068] Section 3.7>
CSeq	=	"CSeq" ":" 1*DIGIT Method
Date	=	"Date" ":" SIP-date
SIP-date	=	rfc1123-date
rfc1123-date	=	<defined in [RFC2068] Section 3.3.1>
Encryption	=	"Encryption" ":" encryption-scheme 1*SP #encryption-params
encryption-scheme	=	token
encryption-params	=	generic-param
generic-param	=	token ["=" ( token | quoted-string )]
Expires	=	"Expires" ":" ( SIP-date | delta-seconds )
From	=	( "From" | "f" ) ":" ( name-addr | addr-spec ) *( ";" from-param )
from-param	=	tag-param | generic-param
Hide	=	"Hide" ":" ( "route" | "hop" | other-hide )
other-hide	=	token
In-Reply-To	=	"In-Reply-To" ":" 1#callid
Max-Forwards	=	"Max-Forwards" ":" 1*DIGIT
MIME-Version	=	<defined in [RFC2068] Section 19.4.7>
Organization	=	"Organization" ":" TEXT-UTF8-TRIM
Priority	=	"Priority" ":" priority-value
priority-value	=	"emergency" | "urgent" | "normal" | "non-urgent" | other-priority
other-priority	=	token
Proxy-Authenticate	=	<defined in [RFC2068] Section 14.33>
Proxy-Authorization	=	<defined in [RFC2068] Section 14.34>
Proxy-Require	=	"Proxy-Require" ":" 1#option-tag
Record-Route	=	"Record-Route" ":" 1#( name-addr *( ";" rr-param ) )
rr-param	=	generic-param
Require	=	"Require" ":" 1#option-tag
Response-Key	=	"Response-Key" ":" key-scheme 1*SP #key-param
key-scheme	=	token
key-param	=	generic-param
Retry-After	=	"Retry-After" ":" ( SIP-date | delta-seconds ) [comment] *( ";" retry-param )
retry-param	=	"duration" "=" delta-seconds | generic-param
Route	=	"Route" ":" 1#( name-addr *( ";" rr-param ) )
Server	=	<defined in [RFC2068] Section 14.39>
Subject	=	( "Subject" | "s" ) ":" TEXT-UTF8-TRIM
Supported	=	( "Supported" | "k" ) ":" 1#option-tag
Timestamp	=	"Timestamp" ":" *( DIGIT ) ["." *( DIGIT )] [delay]
delay	=	*( DIGIT ) ["." *( DIGIT )]
To	=	( "To" | "t" ) ":" ( name-addr | addr-spec ) *( ";" to-param )
to-param	=	tag-param | generic-param
Unsupported	=	"Unsupported" ":" 1#option-tag
User-Agent	=	<defined in [RFC2068] Section 14.42>
Via	=	( "Via" | "v" ) ":" 1#( sent-protocol sent-by *( ";" via-params ) [comment] )
via-params	=	via-hidden | via-ttl | via-maddr | via-received | via-branch | via-extension
via-hidden	=	"hidden"
via-ttl	=	"ttl" "=" ttl
via-maddr	=	"maddr" "=" maddr
via-received	=	"received" "=" host
via-branch	=	"branch" "=" token
via-extension	=	generic-param
sent-protocol	=	protocol-name "/" protocol-version "/" transport
protocol-name	=	"SIP" | token
protocol-version	=	token
transport	=	"UDP" | "TCP" | token
sent-by	=	( host [":" port] ) | ( concealed-host )
concealed-host	=	token
Warning	=	"Warning" ":" 1#warning-value
warning-value	=	warn-code SP warn-agent SP warn-text
warn-code	=	3DIGIT
warn-agent	=	( host [":" port] ) | pseudonym  ; the name or pseudonym of the server adding   ; the Warning header, for use in debugging
pseudonym	=	<defined in [RFC2068] Section 14.44>
warn-text	=	quoted-string
URI	=	SIP-URL
digest-uri-value	=	Request-URI  ; as defined in Section 4.3
WWW-Authenticate	=	"WWW-Authenticate" ":" "pgp" pgp-challenge
pgp-challenge	=	#pgp-params
pgp-params	=	realm | pgp-version | pgp-micalgorithm | pgp-pubalgorithm | nonce
realm	=	"realm" "=" realm-value
realm-value	=	quoted-string
pgp-version	=	"version" "=" DQUOTE digit *( "." digit ) *alpha DQUOTE
pgp-micalgorithm	=	"algorithm" "=" ( "md5" | "sha1" | token | "ripemd160" | "MD2" | "TIGER192" | "HAVAL-5-160" )
pgp-pubalgorithm	=	"pubkey" "=" ( "rsa" | "rsa-encrypt" | "rsa-sign" | "elgamal" | "dsa" | token )
nonce	=	"nonce" "=" nonce-value
nonce-value	=	quoted-string
Authorization	=	"Authorization" ":" "pgp" #pgp-response
pgp-response	=	realm | pgp-version | pgp-signature | signed-by | nonce
pgp-signature	=	"signature" "=" quoted-string
signed-by	=	"signed-by" "=" DQUOTE URI DQUOTE
Encryption	=	"Encryption" ":" "pgp" pgp-eparams
pgp-eparams	=	1#( pgp-version | pgp-encoding )
pgp-encoding	=	"encoding" "=" "ascii" | token
Response-Key	=	"Response-Key" ":" "pgp" pgp-ekparams
pgp-ekparams	=	1#( pgp-version | pgp-encoding | pgp-key )
pgp-key	=	"key" "=" quoted-string
OCTET	=	%x00-FF  ; any 8-bit sequence of data
CHAR	=	%x00-7F  ; any US-ASCII character (octets 0 - 127)
upalpha	=	"A" | "B" | "C" | "D" | "E" | "F" | "G" | "H" | "I" | "J" | "K" | "L" | "M" | "N" | "O" | "P" | "Q" | "R" | "S" | "T" | "U" | "V" | "W" | "X" | "Y" | "Z"
lowalpha	=	"a" | "b" | "c" | "d" | "e" | "f" | "g" | "h" | "i" | "j" | "k" | "l" | "m" | "n" | "o" | "p" | "q" | "r" | "s" | "t" | "u" | "v" | "w" | "x" | "y" | "z"
alpha	=	lowalpha | upalpha
DIGIT	=	"0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9"
alphanum	=	alpha | DIGIT
CTL	=	%x00-1F | %x7F  ; (octets 0 -- 31) and DEL (127)
CR	=	%d13  ; US-ASCII CR, carriage return character
LF	=	%d10  ; US-ASCII LF, line feed character
SP	=	%d32  ; US-ASCII SP, space character
HT	=	%d09  ; US-ASCII HT, horizontal tab character
CRLF	=	CR LF  ; typically the end of a line
unreserved	=	alphanum | mark
mark	=	"-" | "_" | "." | "!" | "~" | "*" | "'" | "(" | ")"
escaped	=	"%" hex hex
LWS	=	*( SP | HT ) [CRLF] 1*( SP | HT )  ; linear whitespace
TEXT-UTF8	=	*( TEXT-UTF8char | LWS )
TEXT-UTF8-TRIM	=	*TEXT-UTF8char *( *LWS TEXT-UTF8char )
TEXT-UTF8char	=	%x21-7E | UTF8-NONASCII
UTF8-NONASCII	=	%xC0-DF 1UTF8-CONT | %xE0-EF 2UTF8-CONT | %xF0-F7 3UTF8-CONT | %xF8-FB 4UTF8-CONT | %xFC-FD 5UTF8-CONT
UTF8-CONT	=	%x80-BF
HEX	=	"A" | "B" | "C" | "D" | "E" | "F" | "a" | "b" | "c" | "d" | "e" | "f" | DIGIT
token	=	1*( alphanum | "-" | "." | "!" | "%" | "*" | "_" | "+" | "`" | "'" | "~" )
separators	=	"(" | ")" | "<" | ">" | "@" | "," | ";" | ":" | "\" | DQUOTE | "/" | "[" | "]" | "?" | "=" | "{" | "}" | SP | HT
comment	=	"(" *( ctext | quoted-pair | comment ) ")"
ctext	=	< any TEXT-UTF8 excluding "(" and ")">
quoted-string	=	( DQUOTE *( qdtext | quoted-pair ) DQUOTE )
qdtext	=	LWS | %x21 | %x23-5B | %x5D-7E | UTF8-NONASCII
quoted-pair	=	" \ " CHAR
DQUOTE	=	<defined in [RFC2234]>

Symbol Cross Reference List

Following is a cross-reference list for the ABNF. On the left are references to productions, on the right are links to the rules in which those productions are referenced.

Symbol Cross-Reference Table

Reference	Productions which Reference this Symbol
Accept	general-header
Accept-Encoding	general-header
Accept-Language	general-header
Alert-Info	request-header
Allow	entity-header
Authorization	request-header
CHAR	quoted-pair
CR	CRLF
CRLF	generic-message, Request, Request-Line, Response, Status-Line, message-header, LWS
CSeq	general-header
Call-ID	general-header
Call-Info	general-header
Client-Error	Status-Code
Contact	general-header
Content-Disposition	entity-header
Content-Encoding	entity-header
Content-Language	entity-header
Content-Length	entity-header
Content-Type	entity-header
DIGIT	IPv4address, IPv4address, IPv4address, IPv4address, port, ttl, extension-code, Content-Length, CSeq, Max-Forwards, Timestamp, Timestamp, delay, delay, warn-code, alphanum, HEX
DQUOTE	contact-params, contact-params, pgp-version, pgp-version, signed-by, signed-by, separators, quoted-string, quoted-string
Date	general-header
Encryption	general-header
Expires	entity-header
From	general-header
Global-Failure	Status-Code
HEX	hex4
HT	LWS, LWS, separators
Hide	request-header
IPv4address	host, IPv6address
IPv6address	IPv6reference
IPv6reference	host
In-Reply-To	request-header
Informational	Status-Code
LF	CRLF
LWS	field-value, TEXT-UTF8, TEXT-UTF8-TRIM, qdtext
MIME-Version	general-header
Max-Forwards	request-header
Method	method-param, Request-Line, Allow, CSeq
Organization	general-header
Priority	request-header
Proxy-Authenticate	response-header
Proxy-Authorization	request-header
Proxy-Require	request-header
Reason-Phrase	Status-Line
Record-Route	general-header
Redirection	Status-Code
Request	SIP-message
Request-Line	start-line, Request
Request-URI	Request-Line, digest-uri-value
Require	general-header
Response	SIP-message
Response-Key	request-header
Retry-After	response-header
Route	request-header
SIP-URL	Request-URI, addr-spec, URI
SIP-Version	Request-Line
SIP-date	contact-params, Date, Expires, Retry-After
SIP-version	Status-Line
SP	Request-Line, Request-Line, Status-Line, Status-Line, Encryption, Response-Key, warning-value, warning-value, LWS, LWS, separators
Server	response-header
Server-Error	Status-Code
Status-Code	Status-Line
Status-Line	start-line, Response
Subject	request-header
Success	Status-Code
Supported	general-header
TEXT-UTF8-TRIM	Organization, Subject
TEXT-UTF8char	TEXT-UTF8, TEXT-UTF8-TRIM, TEXT-UTF8-TRIM
Timestamp	general-header
To	general-header
URI	Alert-Info, Call-Info, addr-spec, signed-by
UTF8-CONT	UTF8-NONASCII, UTF8-NONASCII, UTF8-NONASCII, UTF8-NONASCII, UTF8-NONASCII
UTF8-NONASCII	TEXT-UTF8char, qdtext
Unsupported	response-header
User-Agent	general-header
Via	general-header
WWW-Authenticate	response-header
Warning	response-header
absoluteURI	Request-URI
addr-spec	Contact, name-addr, From, To
alpha	toplabel, toplabel, pgp-version, alphanum
alphanum	domainlabel, domainlabel, domainlabel, domainlabel, toplabel, toplabel, unreserved, token
callid	Call-ID, In-Reply-To
comment	Retry-After, Via, comment
concealed-host	sent-by
contact-extension	contact-params
contact-params	Contact
content-coding	Content-Encoding
ctext	comment
delay	Timestamp
delta-seconds	contact-params, Expires, Retry-After, retry-param
digit	pgp-version, pgp-version
disp-extension-token	disposition-type
display-name	name-addr
disposition-param	Content-Disposition
disposition-type	Content-Disposition
domainlabel	hostname
encryption-params	Encryption
encryption-scheme	Encryption
entity-header	message-header, Request, Response
escaped	user, password, paramchar, hname, hvalue
extension-code	Status-Code
extension-method	Method
field-content	field-value
field-name	message-header
field-value	message-header
from-param	From
general-header	message-header, Request, Response
generic-param	Alert-Info, info-param, contact-extension, disposition-param, encryption-params, from-param, rr-param, key-param, retry-param, to-param, via-extension
header	headers, headers
headers	SIP-URL
hex	escaped, escaped
hex4	hexseq, hexseq
hexpart	IPv6address
hexseq	hexpart, hexpart, hexpart, hexpart
hname	header
hnv-unreserved	hname, hvalue
host	hostport, maddr-param, via-received, sent-by, warn-agent
hostname	host
hostport	SIP-URL
hvalue	header
info-param	Call-Info
key-param	Response-Key
key-scheme	Response-Key
lowalpha	alpha
maddr	via-maddr
maddr-param	url-parameter
mark	unreserved
media-type	Content-Type
message-body	generic-message, Request, Response
message-header	generic-message
method-param	url-parameter
name-addr	Contact, From, Record-Route, Route, To
nonce	pgp-params, pgp-response
nonce-value	nonce
option-tag	Proxy-Require, Require, Supported, Unsupported
other-handling	disposition-param
other-hide	Hide
other-param	url-parameter
other-priority	priority-value
other-transport	transport-param
other-user	user-param
param-reserved	paramchar
paramchar	pname, pvalue
password	userinfo
pgp-challenge	WWW-Authenticate
pgp-ekparams	Response-Key
pgp-encoding	pgp-eparams, pgp-ekparams
pgp-eparams	Encryption
pgp-key	pgp-ekparams
pgp-micalgorithm	pgp-params
pgp-params	pgp-challenge
pgp-pubalgorithm	pgp-params
pgp-response	Authorization
pgp-signature	pgp-response
pgp-version	pgp-params, pgp-response, pgp-eparams, pgp-ekparams
pname	other-param
port	hostport, sent-by, warn-agent
priority-value	Priority
protocol-name	sent-protocol
protocol-version	sent-protocol
pseudonym	warn-agent
pvalue	other-param
qdtext	quoted-string
quoted-pair	comment, quoted-string
quoted-string	display-name, generic-param, warn-text, realm-value, nonce-value, pgp-signature, pgp-key
qvalue	contact-params
realm	pgp-params, pgp-response
realm-value	realm
request-header	message-header, Request
response-header	message-header, Response
retry-param	Retry-After
rfc1123-date	SIP-date
rr-param	Record-Route, Route
sent-by	Via
sent-protocol	Via
signed-by	pgp-response
start-line	generic-message
tag-param	from-param, to-param
telephone-subscriber	userinfo
to-param	To
token	other-transport, other-user, tag-param, extension-method, option-tag, field-name, callid, callid, info-param, display-name, other-handling, disp-extension-token, encryption-scheme, generic-param, generic-param, other-hide, other-priority, key-scheme, via-branch, protocol-name, protocol-version, transport, concealed-host, pgp-micalgorithm, pgp-pubalgorithm, pgp-encoding
toplabel	hostname
transport	sent-protocol
transport-param	url-parameter
ttl	ttl-param, via-ttl
ttl-param	url-parameter
unreserved	user, password, paramchar, hname, hvalue
upalpha	alpha
url-parameter	url-parameters
url-parameters	SIP-URL
user	userinfo
user-param	url-parameter
userinfo	SIP-URL
via-branch	via-params
via-extension	via-params
via-hidden	via-params
via-maddr	via-params
via-params	Via
via-received	via-params
via-ttl	via-params
warn-agent	warning-value
warn-code	warning-value
warn-text	warning-value
warning-value	Warning

General Directions

Rule-Names

• Clicking on the rule-name will move you to the list of references to the selected rule-name.

References

• Clicking on references in the production will move you to the production with the rule-name selected.

Copyright

This ABNF2HTML generated document is a derivative work of an Internet-Draft or RFC and is:

Copyright © The Internet Society (2000).
All Rights Reserved.

This document and translations of it may be copied and furnished to others, and derivative works that comment on or otherwise explain it or assist in its implementation may be prepared, copied, published and distributed, in whole or in part, without restriction of any kind, provided that the above copyright notice and this paragraph are included on all such copies and derivative works. However, this document itself may not be modified in any way, such as by removing the copyright notice or references to the Internet Society or other Internet organizations, except as needed for the purpose of developing Internet standards in which case the procedures for copyrights defined in the Internet Standards process must be followed, or as required to translate it into language other than English.

The limited permissions granted above are perpetual and will not be revoked by the Internet Society or its successors or asigns.

Disclaimers

This document and the information contained herein is provided on an "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THIS INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MECHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

Although the conversion program which created this document has been tested vigorously, errors may have been introduced while translating from ABNF to HTML: neither the author nor Inet Technologies, Inc. offers any warranty of fitness for any purpose whatsoever regarding the information contained herein, and shall not be held responsible for any damages whatsoever (whether indirect or special) arising from the use of this document or the information contained herein. Inet Technologies, Inc. is under no obligation to provide any feature nor conform to any specification listed in this document.