SIPPING Working Group Miguel Garcia
Internet Draft Ericsson
Carsten Bormann
Joerg Ott
TZI/Uni Bremen
Richard Price
Siemens/Roke Manor
Adam Roach
dynamicsoft
Expires: November 2002 May 2002
The Session Initiation Protocol (SIP) and Session Description Protocol
(SDP) static dictionary for Signaling Compression (SigComp)
<draft-ietf-sipping-sigcomp-sip-dictionary-01.txt>
Status of this memo
This document is an Internet-Draft and is in full conformance with all
provisions of Section 10 of RFC2026.
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This document is an individual submission to the IETF. Comments should
be directed to the authors.
Abstract
The Session Initiation Protocol (SIP) [2] is a text-based protocol for
initiating and managing communication sessions. The protocol can be
compressed by using Signaling Compression (SigComp) [1]. Similarly,
the Session Description Protocol (SDP) [24] is a text-based protocol
intended for describing multimedia sessions for the purposes of
session announcement, session invitation, and other forms of
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multimedia session initiation. This memo defines the SIP/SDP-specific
static dictionary that SigComp may use in order to achieve higher
efficiency. The dictionary is compression algorithm independent.
Table of contents
1. Introduction......................................................2
2. Design considerations.............................................2
3. Input strings to the SIP static dictionary for Signaling
Compression..........................................................4
4. Input strings to the SDP static dictionary for Signaling
Compression.........................................................12
5. Binary representation of the SIP/SDP dictionary..................14
6. Security Considerations..........................................19
7. IANA Considerations..............................................19
8. Author's Addresses...............................................19
9. Acknowledgements.................................................19
10. References......................................................20
10.1 Normative references...........................................20
10.2 Informative references.........................................20
1. Introduction
SIP [2] and SDP [24] are text-based protocols that use the UTF-8
charset (RFC 2279 [4]). SIP and SDP were designed for rich bandwidth
links. However, when SIP/SDP is run over narrow bandwidth links, such
as radio interfaces or low speed serial links, the session setup time
increases substantially, compared to an operation over a rich
bandwidth link.
The session setup time can decrease dramatically if the SIP/SDP
signaling is compressed. The signaling compression mechanisms
specified in SigComp [1] provide a multiple compression/decompression
algorithm framework to compress and decompress text-based protocols
such as SIP and SDP.
When compression is used in SIP/SDP, the compression achieves its
maximum rate once a few message exchanges have taken place. This is
due to the fact that the first message the compressor sends to the
decompressor is only partially compressed, as there is not a previous
stored state to compress against. As the goal is to reduce the session
setup time as much as possible, it seems sensible to investigate a
mechanism to boost the compression rate from the first message.
In this memo we introduce the static dictionary for SIP and SDP. The
dictionary is to be used in conjunction with SIP, SDP and SigComp. The
static SIP/SDP dictionary constitutes a SigComp state that can be
referenced in the first SIP message that the compressor sends out.
2. Design considerations
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The static SIP/SDP dictionary is a collection of well-known strings
that appear in most of the SIP and SDP messages. The dictionary is not
a comprehensive list of reserved words, but it includes most of the
strings that appear in SIP and SDP signaling.
The dictionary is unique and MUST be available in all Sigcomp
implementations for SIP/SDP. The dictionary is not going to evolve as
SIP or SDP evolve. It is defined once, and stays as is forever. This
solves the problems of updating, upgrading and finding out the
dictionary that is supported at the remote end when several versions
of the same dictionary coexist.
Section 3 defines the collection of strings that are part of the SIP
static dictionary. It contains references to the documents that define
those strings.
Section 4 defines the collection of strings that are part of the SDP
static dictionary. It contains references to the documents that define
those strings.
Section 5 is the binary form of the SIP/SDP dictionary. This is the
dictionary that is included in the SigComp implementation. This
dictionary is formed upon the collection of individual dictionaries in
sections 3 and 4.
The dictionary is a collection of UTF-8 encoded character strings. In
order to facilitate the readability, we describe the dictionary in a
table.
Each row in the dictionary represents an entry. Each entry contains
the string in the dictionary, its priority, its numerical ascendant
position, its offset from the first octet, and a reference.
The columns are described as follows:
String: represents the UTF-8 string that is inserted into the
dictionary. Note that the quotes (") are not part of the string
itself. Note also that the notation [CRLF] represents a Carriage
Return character (ASCII code 0x0D) followed by a Line Feed character
(ASCII code 0x0A).
Pr: indicates the priority of this string within the dictionary. Some
compression algorithms, such as DEFLATE, offer an increased efficiency
when the most commonly used strings are located at the bottom of the
dictionary. We have decided to allocate a priority to each string in
the dictionary. Priorities range from 1 until 5. A low number in the
priority column (e.g., 1) indicate high probability of finding the
string in most SIP or SDP messages. A high number in the priority
column (e.g., 5) indicate very low probability of finding the string
in a SIP or SDP message. This is typically the case of rare error
codes or optional infrequent tags.
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Off: indicates the hexadecimal offset of the entry with respect the
first octet in the dictionary.
Len: the length of the string (in hexadecimal).
References: contains a reference to the RFC and the section within the
RFC where the string is defined.
Note that the strings stored in the dictionary are case sensitive. The
strings do not comprise the quotes ("), they are just shown here to
increase the readability. Where there string is a header field, it
also comprises the colon ":" and a white space. Note that this is a
restriction against the SIP Augmented BNF, that allows other
combinations (e.g., a white space or horizontal tabulator before the
colon (":") sign).
Some strings appear followed by an equal sign and some other not. This
depends on whether the string is part of a parameter name or a
parameter value.
In a SIP message, all the SIP header fields terminate with a CRLF pair
characters. As these characters are appended to the end of each SIP
header line, right after the header values, and because the header
values are typically not part of the static SIP dictionary, we cannot
include the terminating CRLF, as part of the SIP static dictionary.
Instead, the approach we have taken is to include in each header field
entry the CRLF from the previous line that prepends every header
field. We have represented CRLF by the notation [CRLF]. Therefore, an
entry in the dictionary represented as: "[CRLF]From: " SHALL be
interpreted as an entry whose value is CR, LF, the word From, a colon
and a whitespace.
SIP responses are composed of a status code (e.g., "302") and a reason
phrase (e.g., "Moved Temporarily"). The status code is a normative
part, whereas the reason phrase is not normative, it is just a
suggested text. Therefore, both "302 Moved Temporarily" and "302
Redirect" are valid SIP responses.
In the SIP dictionary we have included two entries per response code,
one including only the status code an a white space (e.g. "302 ") and
another one including both the status code and the suggested reason
phrase (e.g., "302 Moved Temporarily"). The former can be used when
the SIP response changed the suggested reason phrase by another one.
The later can be used when the suggested reason phrase is part of the
response. In this way, we accommodate both alternatives.
3. Input strings to the SIP static dictionary for Signaling Compression
(SigComp)
String Pr Off Len References
==================================== == ==== ==== ==========
"sip:" 1 0E71 0004 [2] 19.1.1
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"sips:" 3 0BCE 0005 [2] 19.1.1
"tel:" 3 098E 0004 [6] 2.2
"SIP/2.0" 1 0E21 0007 [2] 25.1
"SIP/2.0/UDP " 1 0E46 000C [2] 25.1
"SIP/2.0/TCP " 3 0E21 000C [2] 25.1
"INVITE" 1 0E62 0006 [2] 25.1
"INVITE " 1 0E62 0007 [2] 25.1
"ACK" 2 0C84 0003 [2] 25.1
"ACK " 2 0C84 0004 [2] 25.1
"OPTIONS" 4 033A 0007 [2] 25.1
"OPTIONS " 4 033A 0008 [2] 25.1
"BYE" 2 0DD5 0003 [2] 25.1
"BYE " 2 0DD5 0004 [2] 25.1
"CANCEL" 4 0720 0006 [2] 25.1
"CANCEL " 4 0720 0007 [2] 25.1
"REGISTER" 2 0CBA 0008 [2] 25.1
"REGISTER " 2 0CBA 0009 [2] 25.1
"INFO" 4 0833 0004 [7] 2
"INFO " 4 0833 0005 [7] 2
"SUBSCRIBE" 2 0AEB 0009 [8] 8.1.1
"SUBSCRIBE " 2 0AEB 000A [8] 8.1.1
"NOTIFY" 2 0D26 0006 [8] 8.1.2
"NOTIFY " 2 0D26 0007 [8] 8.1.2
"PRACK" 2 0C82 0005 [9] 6
"PRACK " 2 0C82 0006 [9] 6
"UPDATE" 2 0D1F 0006 [10] 7, 10
"UPDATE " 2 0D1F 0007 [10] 7, 10
"REFER" 4 07B1 0005 [12] 3, 10
"REFER " 4 07B1 0006 [12] 3, 10
"MESSAGE" 4 069D 0007 [20] 9
"MESSAGE " 4 069D 0008 [20] 9
"[CRLF]Accept: " 4 0829 000A [2] 20.1
"[CRLF]Accept-Contact: " 5 0000 0012 [22] 5
"[CRLF]Accept-Encoding: " 4 05FB 0013 [2] 20.2
"[CRLF]Accept-Language: " 4 05E8 0013 [2] 20.3
"[CRLF]Alert-Info: " 4 0712 000E [2] 20.4
"[CRLF]Allow: " 3 0A2B 0009 [2] 20.5
"[CRLF]Allow-Events: " 3 09E2 0010 [8] 8.2.1
"[CRLF]Authentication-Info: " 4 0378 0017 [2] 20.6
"[CRLF]Authorization: " 2 0CC3 0011 [2] 20.7
"[CRLF]Call-ID: " 1 0E75 000B [2] 20.8
"[CRLF]Call-Info: " 5 005F 000D [2] 20.9
"[CRLF]Contact: " 1 0E80 000B [2] 20.10
"[CRLF]Content-Disposition: " 4 03AE 0017 [2] 20.11
"[CRLF]Content-Encoding: " 4 0342 0014 [2] 20.12
"[CRLF]Content-Language: " 4 0465 0014 [2] 20.13
"[CRLF]Content-Length: " 2 0CA4 0012 [2] 20.14
"[CRLF]Content-Type: " 2 0CDB 0010 [2] 20.15
"[CRLF]CSeq: " 1 0E99 0008 [2] 20.16
"[CRLF]Date: " 4 088B 0008 [2] 20.17
"[CRLF]Error-Info: " 5 0044 000E [2] 20.18
"[CRLF]Event: " 3 09F2 000C [8] 8.2.1
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"[CRLF]Expires: " 2 0D44 000B [2] 20.19
"[CRLF]From: " 1 0E91 0008 [2] 20.20
"[CRLF]In-Reply-To: " 4 06DD 000F [2] 20.21
"[CRLF]Max-Forwards: " 1 0E52 0010 [2] 20.22
"[CRLF]Min-Expires: " 4 06CE 000F [2] 20.23
"[CRLF]Min-SE: " 4 081F 000A [17] 5
"[CRLF]MIME-Version: " 5 0034 0010 [2] 20.24
"[CRLF]Network-Asserted-ID: " 2 0BD3 0017 [36] 7.1
"[CRLF]Organization: " 5 0024 0010 [2] 20.25
"[CRLF]Path: " 3 0A34 0008 [15] 3
"[CRLF]Priority: " 4 0754 000C [2] 20.26
"[CRLF]Privacy: " 2 0D4F 000B [37] 4.2
"[CRLF]Proxy-Authenticate: " 4 040C 0016 [2] 20.27
"[CRLF]Proxy-Authorization: " 4 035D 0017 [2] 20.28
"[CRLF]Proxy-Require: " 4 0655 0011 [2] 20.29
"[CRLF]P-Media-Authorization: " 3 0B71 0019 [21] 5.1, 9
"[CRLF]Media-Authorization: " 3 0938 0017 [21] 5.1, 9
"[CRLF]RAck: " 2 0DBD 0008 [9] 7.2
"[CRLF]Reason: " 3 0A21 000A [16] 2
"[CRLF]Record-Route: " 3 09D2 0010 [2] 20.30
"[CRLF]Refer-To: " 4 079C 000C [12] 3, 10
"[CRLF]Reject-Contact: " 5 0012 0012 [22] 5
"[CRLF]Replaces: " 4 0760 000C [13] 3.1
"[CRLF]Reply-To: " 5 006C 000C [2] 20.31
"[CRLF]Request-Disposition: " 4 0393 0017 [22] 5
"[CRLF]Require: " 2 0D5A 000B [2] 20.32
"[CRLF]Retry-After: " 4 06BF 000F [2] 20.33
"[CRLF]Route: " 2 0D89 0009 [2] 20.34
"[CRLF]RSeq: " 2 0DCD 0008 [9] 7.1
"[CRLF]Security-Mechanism: " 2 0C04 0016 [19] 6.4
"[CRLF]Server: " 4 0801 000A [2] 20.35
"[CRLF]Session-Expires: " 3 0992 0013 [17] 4
"[CRLF]Subject: " 5 0083 000B [2] 20.36
"[CRLF]Subscription-State: " 3 0953 0016 [8] 8.2.3
"[CRLF]Supported: " 2 0D2D 000D [2] 20.37
"[CRLF]Timestamp: " 5 0052 000D [2] 20.38
"[CRLF]To: " 1 0EA1 0006 [2] 20.39
"[CRLF]Unsupported: " 4 06B0 000F [2] 20.40
"[CRLF]User-Agent: " 4 06F6 000E [2] 20.41
"[CRLF]Via: " 1 0E1A 0007 [2] 20.42
"[CRLF]Via: SIP/2.0/UDP " 1 0E3F 0013 [2] 20.42
"[CRLF]Via: SIP/2.0/TCP " 3 0E1A 0013 [2] 20.42
"[CRLF]Warning: " 5 0078 000B [2] 20.43
"[CRLF]WWW-Authenticate: " 2 0C47 0014 [2] 20.44
"[CRLF][CRLF]" 2 0B6F 0004 [2] 7
";transport=" 4 07D8 000B [2] 25.1
"udp" 4 0677 0003 [2] 25.1, [24] A
"tcp" 4 0BA9 0003 [2] 25.1
"sctp" 4 0332 0004 [2] 25.1
"tls" 4 05A0 0003 [2] 25.1
";user=" 3 0A3C 0006 [2] 25.1
"phone" 3 0155 0005 [2] 25.1
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"ip" 4 012F 0002 [2] 25.1
";method=" 4 0863 0008 [2] 25.1
";ttl=" 4 08A6 0005 [2] 25.1
";lr" 2 0CD4 0003 [2] 25.1
"Digest " 2 0DD9 0007 [5] 3.2.1, 3.2.2
"username=" 2 0C29 0009 [5] 3.2.2
"uri=" 2 0DED 0004 [5] 3.2.2
"qop=" 2 0DF1 0004 [5] 3.2.1, 3.2.2
"cnonce=" 2 0DE0 0007 [5] 3.2.2
"nc=" 2 0DF5 0003 [5] 3.2.2
"response=" 2 0B0B 0009 [5] 3.2.2
"nextnonce=" 2 0B97 000A [5] 3.2.3
"rspauth=" 2 0BB3 0008 [5] 3.2.3
"realm=" 2 0AE5 0006 [5] 3.2.1
"domain=" 2 0AC3 0007 [5] 3.2.1
"nonce=" 2 0B9B 0006 [5] 3.2.1
"opaque=" 4 0893 0007 [5] 3.2.1
"stale=" 4 0182 0006 [5] 3.2.1
"true" 4 056A 0004 [5] 3.2.1, [22] 5.2
"false" 4 0C32 0005 [5] 3.2.1
"algorithm=" 2 0C3D 000A [5] 3.2.1, [18] 3.1
"MD5" 2 0C5F 0003 [5] 3.2.1, [18] 3.1
"MD5-sess" 2 0C5F 0008 [5] 3.2.1, [18] 3.1
"auth" 4 0453 0004 [5] 3.2.1
"auth-int" 4 0453 0008 [5] 3.2.1
"AKAv" 2 0D01 0004 [18] 6
"auts=" 4 08A1 0005 [18] 3.1
"to=" 3 09CF 0003 [19] 6.4
"from=" 3 0A42 0005 [19] 6.4
"mech=" 3 0A47 0005 [19] 6.4
"digest" 4 02F1 0006 [19] 6.4
"ipsec-ike" 4 07A8 0009 [19] 6.4
"ipsec-man" 4 0B33 0009 [19] 6.4
"smime" 4 0298 0005 [19] 6.4
"pref=" 4 0679 0005 [19] 6.4
"alg=" 4 023C 0004 [19] 6.4
";purpose=" 5 00B6 0009 [2] 20.9
"icon" 5 0DB6 0004 [2] 20.9, 20.11
"info" 5 0CB6 0004 [2] 20.9
"card" 5 010D 0004 [2] 20.9
";expires=" 2 0D9B 0009 [2] 25.1, [8] 8.4
"render" 5 0AE0 0006 [2] 20.11
"session" 5 0C63 0007 [2] 20.11, [37] 4.2
"alert" 5 0C9F 0005 [2] 20.11
";handling=" 5 00A2 000A [2] 20.11
"optional" 2 0C99 0008 [2] 20.11, [11] 4
"required" 5 0978 0008 [2] 20.11
"text" 5 00FD 0004 [2] 25.1
"image" 5 085E 0005 [2] 25.1
"audio" 5 0C95 0005 [2] 25.1
"video" 5 0A76 0005 [2] 25.1
"application" 2 05A7 000B [2] 25.1
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"application/sdp" 2 0B60 000F [2] 25.1
"message" 4 029B 0007 [2] 25.1,
"sip" 4 0615 0003 [14] 1
"sipfrag" 4 0615 0007 [14] 2
"multipart" 4 067E 0009 [2] 25.1, 7.4.1
"sdp" 2 0770 0003
"xml" 2 0DF8 0003
"Mon, " 4 08AB 0005 [2] 25.1
"Tue, " 4 08C4 0005 [2] 25.1
"Wed, " 4 08BF 0005 [2] 25.1
"Thu, " 4 0358 0005 [2] 25.1
"Fri, " 4 08BA 0005 [2] 25.1
"Sat, " 4 08B0 0005 [2] 25.1
"Sun, " 4 08B5 0005 [2] 25.1
" Jan " 4 0478 0005 [2] 25.1
" Feb " 4 0C5A 0005 [2] 25.1
" Mar " 4 0421 0005 [2] 25.1
" Apr " 4 0C19 0005 [2] 25.1
" May " 4 0968 0005 [2] 25.1
" Jun " 4 038E 0005 [2] 25.1
" Jul " 4 03C4 0005 [2] 25.1
" Aug " 4 0BE9 0005 [2] 25.1
" Sep " 4 0373 0005 [2] 25.1
" Oct " 4 094E 0005 [2] 25.1
" Nov " 4 03A9 0005 [2] 25.1
" Dec " 4 0B89 0005 [2] 25.1
" GMT" 4 0355 0004 [2] 25.1
";tag=" 1 0EA7 0005 [2] 25.1
"emergency" 4 027C 0009 [2] 20.26
"urgent" 4 0A65 0006 [2] 20.26
"normal" 4 0C69 0006 [2] 20.26
"non-urgent" 4 0A61 000A [2] 20.26
";duration=" 4 07E3 000A [2] 20.33
";maddr=" 4 089A 0007 [2] 20.42
";received=" 4 07F7 000A [2] 20.42
";branch=" 5 0E30 0008 [2] 20.42
";branch=z9hG4bK" 1 0E30 000F [2] 8.1.1.7
"SIP" 5 0E21 0003 [2] 25.1, [16] 2
"UDP" 2 0E4E 0003 [2] 20.42
"TCP" 2 0E29 0003 [2] 20.42
"TLS" 4 0E2D 0003 [2] 20.42
"SCTP" 4 0C7F 0004 [2] 20.42
"active" 4 09AB 0006 [8] 8.4
"pending" 4 0309 0007 [8] 8.4
"terminated" 4 0BFA 000A [8] 8.4
";reason=" 4 086B 0008 [8] 8.4
";retry-after=" 4 0727 000D [8] 8.4
"deactivated" 4 025A 000B [8] 8.4
"probation" 4 0E0A 0009 [8] 8.4
"rejected" 4 08FC 0008 [8] 8.4
"timeout" 4 0686 0007 [8] 8.4
"giveup" 4 0211 0006 [8] 8.4
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"noresource" 4 03EB 000A [8] 8.4
";id=" 4 08C9 0004 [8] 8.4
"100rel" 2 0DE7 0006 [9] 8.1
"precondition" 2 0A56 000C [11] 8
"refer" 3 0CD6 0005 [12] 10
"to-tag" 4 04E3 0006 [13] 3.2
"from-tag" 4 02D4 0008 [13] 3.2
"replaces" 4 02B7 0008 [13] 3.4
"Q.850" 5 0AA8 0005 [16] 2
";cause=" 5 00EF 0007 [16] 2
";text=" 5 00FC 0006 [16] 2
"path" 3 0BAB 0004 [15] 3
";refresher=" 4 07CD 000B [17] 4
"uac" 4 0749 0003 [17] 4
"uas" 4 08E8 0003 [17] 4
"timer" 4 0ADC 0005 [17] 7.1
";class=" 5 00E1 0007 [22] 5.1
";duplex=" 5 00D9 0008 [22] 5.1
";feature=" 5 00BF 0009 [22] 5.1
";language=" 5 0098 000A [22] 5.1
";media=" 5 00E8 0007 [22] 5.1
";mobility=" 5 008E 000A [22] 5.1
"fixed" 5 0108 0005 [22] 5.1
"mobile" 5 0102 0006 [22] 5.1
"personal" 5 0236 0008 [22] 5.1
"business" 5 060E 0008 [22] 5.1
"full" 5 0111 0004 [22] 5.1
"half" 5 0BEE 0004 [22] 5.1
"receive-only" 5 01EE 000C [22] 5.1
"send-only" 5 0A9F 0009 [22] 5.1
"voice-mail" 5 0D04 000A [22] 5.1
"attendant" 5 0BA1 0009 [22] 5.1
";priority=" 5 00AC 000A [22] 5.1
"description" 5 012A 000B [22] 5.1
";methods=" 5 00C8 0009 [22] 5.1
";scheme=" 5 00D1 0008 [22] 5.2
";only=" 5 00F6 0006 [22] 5.2
";q=" 4 08E5 0003 [2] 25.1, [22] 5.2
"proxy" 5 0335 0005 [22] 5.5
"redirect" 5 01A6 0008 [22] 5.5
"cancel" 5 0137 0006 [22] 5.5
"no-cancel" 5 0134 0009 [22] 5.5
"fork" 5 0625 0004 [22] 5.5
"no-fork" 5 0622 0007 [22] 5.5
"recurse" 5 0A9A 0007 [22] 5.5
"non-recurse" 5 0A96 000B [22] 5.5
"parallel" 5 0216 0008 [22] 5.5
"sequential" 5 0C35 000A [22] 5.5
"queue" 5 0E15 0005 [22] 5.5
"no-queue" 5 0E12 0008 [22] 5.5
";comp=sigcomp" 1 0DFE 000D [23] 6
"header" 4 0BAE 0006 [37] 4.2
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"nai" 4 085C 0003 [36] 7.2
"100 " 5 0D0E 0004 [2] 21.1.1
"100 Trying" 2 0D0E 000A [2] 21.1.1
"180 " 5 0CF6 0004 [2] 21.1.2
"180 Ringing" 2 0CF6 000B [2] 21.1.2
"181 " 5 0240 0004 [2] 21.1.3
"181 Call Is Being Forwarded" 4 0240 001B [2] 21.1.3
"182 " 5 06EC 0004 [2] 21.1.4
"182 Queued" 4 06EC 000A [2] 21.1.4
"183 " 5 0BBB 0004 [2] 21.1.5
"183 Session Progress" 2 0BBB 0014 [2] 21.1.5
"200 " 5 0E8B 0004 [2] 21.2.1
"200 OK" 1 0E8B 0006 [2] 21.2.1
"202 " 5 092C 0004 [8] 8.3.1
"202 Accepted" 3 092C 000C [8] 8.3.1
"300 " 5 0285 0004 [2] 21.3.1
"300 Multiple Choices" 4 0285 0014 [2] 21.3.1
"301 " 5 04A7 0004 [2] 21.3.2
"301 Moved Permanently" 4 04A7 0015 [2] 21.3.2
"302 " 5 04BC 0004 [2] 21.3.3
"302 Moved Temporarily" 4 04BC 0015 [2] 21.3.3
"305 " 5 063B 0004 [2] 21.3.4
"305 Use Proxy" 4 063B 000D [2] 21.3.4
"380 " 5 03F5 0004 [2] 21.3.5
"380 Alternative Service" 4 03F5 0017 [2] 21.3.5
"400 " 5 0980 0004 [2] 21.4.1
"400 Bad Request" 4 0980 000F [2] 21.4.1
"401 " 5 0C6F 0004 [2] 21.4.2
"401 Unauthorized" 2 0C6F 0010 [2] 21.4.2
"402 " 5 04E9 0004 [2] 21.4.3
"402 Payment Required" 4 04E9 0014 [2] 21.4.3
"403 " 5 03DF 0004 [2] 21.4.4
"403 Forbidden" 4 03DF 000D [2] 21.4.4
"404 " 5 0648 0004 [2] 21.4.5
"404 Not Found" 4 0648 000D [2] 21.4.5
"405 " 5 043D 0004 [2] 21.4.6
"405 Method Not Allowed" 4 043D 0016 [2] 21.4.6
"406 " 5 0523 0004 [2] 21.4.7
"406 Not Acceptable" 4 0523 0012 [2] 21.4.7
"407 " 5 0188 0004 [2] 21.4.8
"407 Proxy Authentication Required" 4 0188 0021 [2] 21.4.8
"408 " 5 03C9 0004 [2] 21.4.9
"408 Request Timeout" 4 03C9 0013 [2] 21.4.9
"410 " 5 0741 0004 [2] 21.4.10
"410 Gone" 4 0741 0008 [2] 21.4.10
"413 " 5 0B42 0004 [2] 21.4.11
"413 Request Entity Too Large" 4 0B42 001C [2] 21.4.11
"414 " 5 01FA 0004 [2] 21.4.12
"414 Request-URI Too Long" 4 01FA 0018 [2] 21.4.12
"415 " 5 021E 0004 [2] 21.4.13
"415 Unsupported Media Type" 4 021E 001A [2] 21.4.13
"416 " 5 0265 0004 [2] 21.4.14
SIPPING Working Group Expiration 11/30/02 Page 10
Garcia et. al. The static SIP/SDP dictionary for SigComp May 2002
"416 Unsupported URI Scheme" 4 0265 001A [2] 21.4.14
"420 " 5 0A86 0004 [2] 21.4.15
"420 Bad Extension" 4 0A86 0011 [2] 21.4.15
"421 " 5 0115 0004 [2] 21.4.16
"421 Extension Required" 4 0115 0016 [2] 21.4.16
"422 " 5 0B14 0004 [17] 6
"422 Session Timer Too Small" 4 0B14 001B [17] 6
"423 " 5 02BF 0004 [2] 21.4.17
"423 Interval Too Brief" 4 02BF 0016 [2] 21.4.17
"480 " 5 0904 0004 [2] 21.4.18
"480 Temporarily Unavailable" 3 0904 001B [2] 21.4.18
"481 " 5 0161 0004 [2] 21.4.19
"481 Call/Transaction Does Not Exist" 4 0161 0023 [2] 21.4.19
"482 " 5 056E 0004 [2] 21.4.20
"482 Loop Detected" 4 056E 0011 [2] 21.4.20
"483 " 5 0322 0004 [2] 21.4.21
"483 Too Many Hops" 4 0322 0011 [2] 21.4.21
"484 " 5 013D 0004 [2] 21.4.22
"484 Address Incomplete" 4 013D 0016 [2] 21.4.22
"485 " 5 0C1E 0004 [2] 21.4.23
"485 Ambiguous" 4 0C1E 000D [2] 21.4.23
"486 " 5 096D 0004 [2] 21.4.24
"486 Busy Here" 3 096D 000D [2] 21.4.24
"487 " 5 02DC 0004 [2] 21.4.25
"487 Request Terminated" 4 02DC 0016 [2] 21.4.25
"488 " 5 02A2 0004 [2] 21.4.26
"488 Not Acceptable Here" 4 02A2 0017 [2] 21.4.26
"489 " 5 0594 0004 [8] 8.3.2
"489 Bad Event" 4 0594 000D [8] 8.3.2
"491 " 5 0510 0004 [2] 21.4.27
"491 Request Pending" 4 0510 0013 [2] 21.4.27
"493 " 5 0535 0004 [2] 21.4.28
"493 Undecipherable" 4 0535 0012 [2] 21.4.28
"500 " 5 01AE 0004 [2] 21.5.1
"500 Server Internal Error" 4 01AE 0019 [2] 21.5.1
"501 " 5 04FD 0004 [2] 21.5.2
"501 Not Implemented" 4 04FD 0013 [2] 21.5.2
"502 " 5 05B3 0004 [2] 21.5.3
"502 Bad Gateway" 4 05B3 000F [2] 21.5.3
"503 " 5 0426 0004 [2] 21.5.4
"503 Service Unavailable" 4 0426 0017 [2] 21.5.4
"504 " 5 0ACA 0004 [2] 21.5.5
"504 Server Time-out" 4 0ACA 0013 [2] 21.5.5
"505 " 5 0AAB 0004 [2] 21.5.6
"505 Version Not Supported" 4 0AAB 0019 [2] 21.5.6
"513 " 5 0492 0004 [2] 21.5.7
"513 Message Too Large" 4 0492 0015 [2] 21.5.7
"580 " 5 0AF5 0004 [11] 8
"580 Precondition Failure" 4 0AF5 0018 [11] 8
"600 " 5 08EB 0004 [2] 21.6.1
"600 Busy Everywhere" 3 08EB 0013 [2] 21.6.1
"603 " 5 0B8E 0004 [2] 21.6.2
SIPPING Working Group Expiration 11/30/02 Page 11
Garcia et. al. The static SIP/SDP dictionary for SigComp May 2002
"603 Decline" 4 0B8E 000B [2] 21.6.2
"604 " 5 01D5 0004 [2] 21.6.3
"604 Does Not Exist Anywhere" 4 01D5 001B [2] 21.6.3
"606 " 5 0547 0004 [2] 21.6.4
"606 Not Acceptable" 4 0547 0012 [2] 21.6.4
"687 " 5 047D 0004 [13] 3.5
"687 Dialog Terminated" 4 047D 0015 [13] 3.5
"Anonymous" 3 0E69 0009 [2] 8.1.1.3
Table 1: SIP input strings to the SIP/SDP dictionary
for Sigcomp
4. Input strings to the SDP static dictionary for Signaling Compression
(Sigcomp)
String Pr Off Len References
==================================== == ==== ==== ==========
"v=0[CRLF]o=" 2 0D18 0007 [24] 6
"[CRLF]s=" 2 0D84 0004 [24] 6
"[CRLF]s= " 2 0D84 0005 [35] 5
"[CRLF]i=" 4 08D9 0004 [24] 6
"[CRLF]u=" 4 08DD 0004 [24] 6
"[CRLF]e=" 4 08E1 0004 [24] 6
"[CRLF]c=IN IP4 " 3 0A16 000B [24] 6
"[CRLF]c=IN IP6 " 2 0CEB 000B [24] 6
"[CRLF]c=" 5 0A16 0004 [24] 6
"[CRLF]b=" 3 0A4C 0004 [24] 6
"[CRLF]t=" 2 0C88 0004 [24] 6
"[CRLF]t=0 0" 2 0C88 0007 [35] 5
"[CRLF]r=" 4 08D1 0004 [24] 6
"[CRLF]z=" 4 08D5 0004 [24] 6
"[CRLF]k=clear:" 4 0815 000A [24] 6
"[CRLF]k=base64:" 4 07C2 000B [24] 6
"[CRLF]k=uri:" 4 0883 0008 [24] 6
"[CRLF]k=prompt:" 4 06A5 000B [24] 6
"[CRLF]k=" 5 06A5 0004 [24] 6
"[CRLF]a=cat:" 4 087B 0008 [24] 6
"[CRLF]a=keywds:" 4 07B7 000B [24] 6
"[CRLF]a=tool:" 4 084A 0009 [24] 6
"[CRLF]a=ptime:" 4 07ED 000A [24] 6
"[CRLF]a=maxptime:" 4 0734 000D [24] 6
"[CRLF]a=rtpmap:" 2 0D65 000B [24] 6, [35] 5
"[CRLF]a=recvonly" 3 09FE 000C [24] 6
"[CRLF]a=sendrecv" 3 0A6B 000C [24] 6
"[CRLF]a=sendonly" 3 0A0A 000C [24] 6
"[CRLF]a=inactive" 3 09A5 000C [24] 6
"[CRLF]a=orient:portrait" 4 04D1 0013 [24] 6
"[CRLF]a=orient:landscape" 4 02F7 0014 [24] 6
"[CRLF]a=orient:seascape" 4 05D5 0013 [24] 6
"[CRLF]a=type:broadcast" 4 0559 0012 [24] 6
"[CRLF]a=type:meeting" 4 068D 0010 [24] 6
"[CRLF]a=type:moderated" 4 0629 0012 [24] 6
SIPPING Working Group Expiration 11/30/02 Page 12
Garcia et. al. The static SIP/SDP dictionary for SigComp May 2002
"[CRLF]a=type:test" 4 09C3 000D [24] 6
"[CRLF]a=type:H.332" 4 091F 000E [24] 6
"[CRLF]a=type:recvonly" 4 0666 0011 [24] 6
"[CRLF]a=charset:" 4 0790 000C [24] 6
"[CRLF]a=sdplang:" 4 076C 000C [24] 6
"[CRLF]a=lang:" 4 0853 0009 [24] 6
"[CRLF]a=framerate:" 4 0704 000E [24] 6
"[CRLF]a=quality:" 4 0784 000C [24] 6
"[CRLF]a=fmtp:" 2 0DA4 0009 [24] 6
"[CRLF]a=curr:" 2 0D92 0009 [11] 4
"[CRLF]a=des:" 2 0DC5 0008 [11] 4
"[CRLF]a=conf:" 2 0DAD 0009 [11] 4
"[CRLF]a=mid:" 4 0873 0008 [29] 3
"[CRLF]a=group:" 4 080B 000A [29] 3
"[CRLF]a=key-mgmt:MIKEY" 4 0310 0012 [31] 2.1, [32] 6
"[CRLF]a=key-mgmt:" 4 0310 000D [31] 2.1
"[CRLF]a=" 5 02F7 0004 [24] 6
"[CRLF]m=audio " 2 0D7A 000A [24] 6
"[CRLF]m=video " 2 0D70 000A [24] 6
"[CRLF]m=application " 4 05A3 0010 [24] 6
"[CRLF]m=data " 4 0841 0009 [24] 6
"[CRLF]m=control " 4 0778 000C [24] 6
"[CRLF]m=" 5 05A3 0004 [24] 6
"AS " 3 0A53 0003 [24] 6
"CT " 3 0A50 0003 [24] 6
"RTP/AVP " 2 0D3C 0008 [24] A
"RTP/SAVP " 3 09B1 0009 [33] 13
"RTP/AVPF " 3 09BA 0009 [34] 4.1
"udp" 4 0677 0003 [2] 25.1, [24] A
"0.0.0.0" 4 0C8E 0007 [24] A
"qos" 2 0DFB 0003 [11] 4
"mandatory" 2 0B39 0009 [11] 4
"optional" 2 0C99 0008 [2] 20.11, [11] 4
"none" 2 0DB9 0004 [11] 4
"failure" 4 0BF1 0007 [11] 4
"unknown" 4 061C 0007 [11] 4
"e2e" 2 0B5D 0003 [11] 4
"local" 2 0B2E 0005 [11] 4
"remote" 2 0BF6 0006 [11] 4
"send" 2 0A0E 0004 [11] 4
"recv" 2 066F 0004 [11] 4
"sendrecv" 2 0A6F 0008 [11] 4
"AMR" 2 0D3A 0003 [28] 8
"octet-align=" 4 0A7A 000C [28] 8
"mode-set=" 4 0838 0009 [28] 8
"mode-change-period=" 4 05C2 0013 [28] 8
"mode-change-neighbor=" 4 057F 0015 [28] 8
"crc=" 4 08CD 0004 [28] 8
"robust-sorting=" 4 01C6 000F [28] 8
"interleaving=" 4 0458 000D [28] 8
"channels=" 4 074B 0009 [28] 8
"octet-align" 4 0A7A 000B [28] 8
SIPPING Working Group Expiration 11/30/02 Page 13
Garcia et. al. The static SIP/SDP dictionary for SigComp May 2002
"telephone-event" 4 0151 000F [30] 3.3, 6.1
"events" 4 015B 0006 [30] 6.1
"rate" 4 0636 0004 [30] 6.1, 6.2
"tone" 4 03DB 0004 [30] 6.2
Table 2: SDP input strings to the SIP/SDP dictionary
for Sigcomp
5. Binary representation of the SIP/SDP dictionary
This section contains the result of combining the SIP and the SDP
dictionaries described in sections 3 and 4 in order to create a single
dictionary that is loaded into SigComp as a state.
As defined in section 3.3.3 in the Signaling Compression [1], a
SigComp state is characterized by a set of information. In the case of
the static SIP/SDP dictionary, the following information characterizes
the state:
Name: Value:
===================== ========================
state_identifier hash value(TBD)
state_length 0x0EAC
state_address 0 (not relevant for the dictionary)
state_instruction 0 (not relevant for the dictionary)
minimum_access_length 6
state_value Representation of the table below.
0000 0d0a 4163 6365 7074 2d43 6f6e 7461 6374 ..Accept-Contact
0010 3a20 0d0a 5265 6a65 6374 2d43 6f6e 7461 : ..Reject-Conta
0020 6374 3a20 0d0a 4f72 6761 6e69 7a61 7469 ct: ..Organizati
0030 6f6e 3a20 0d0a 4d49 4d45 2d56 6572 7369 on: ..MIME-Versi
0040 6f6e 3a20 0d0a 4572 726f 722d 496e 666f on: ..Error-Info
0050 3a20 0d0a 5469 6d65 7374 616d 703a 200d : ..Timestamp: .
0060 0a43 616c 6c2d 496e 666f 3a20 0d0a 5265 .Call-Info: ..Re
0070 706c 792d 546f 3a20 0d0a 5761 726e 696e ply-To: ..Warnin
0080 673a 200d 0a53 7562 6a65 6374 3a20 3b6d g: ..Subject: ;m
0090 6f62 696c 6974 793d 3b6c 616e 6775 6167 obility=;languag
00A0 653d 3b68 616e 646c 696e 673d 3b70 7269 e=;handling=;pri
00B0 6f72 6974 793d 3b70 7572 706f 7365 3d3b ority=;purpose=;
00C0 6665 6174 7572 653d 3b6d 6574 686f 6473 feature=;methods
00D0 3d3b 7363 6865 6d65 3d3b 6475 706c 6578 =;scheme=;duplex
00E0 3d3b 636c 6173 733d 3b6d 6564 6961 3d3b =;class=;media=;
00F0 6361 7573 653d 3b6f 6e6c 793d 3b74 6578 cause=;only=;tex
0100 743d 6d6f 6269 6c65 6669 7865 6463 6172 t=mobilefixedcar
0110 6466 756c 6c34 3231 2045 7874 656e 7369 dfull421 Extensi
0120 6f6e 2052 6571 7569 7265 6465 7363 7269 on Requiredescri
0130 7074 696f 6e6f 2d63 616e 6365 6c34 3834 ptiono-cancel484
0140 2041 6464 7265 7373 2049 6e63 6f6d 706c Address Incompl
0150 6574 656c 6570 686f 6e65 2d65 7665 6e74 etelephone-event
0160 7334 3831 2043 616c 6c2f 5472 616e 7361 s481 Call/Transa
0170 6374 696f 6e20 446f 6573 204e 6f74 2045 ction Does Not E
SIPPING Working Group Expiration 11/30/02 Page 14
Garcia et. al. The static SIP/SDP dictionary for SigComp May 2002
0180 7869 7374 616c 653d 3430 3720 5072 6f78 xistale=407 Prox
0190 7920 4175 7468 656e 7469 6361 7469 6f6e y Authentication
01A0 2052 6571 7569 7265 6469 7265 6374 3530 Requiredirect50
01B0 3020 5365 7276 6572 2049 6e74 6572 6e61 0 Server Interna
01C0 6c20 4572 726f 726f 6275 7374 2d73 6f72 l Errorobust-sor
01D0 7469 6e67 3d36 3034 2044 6f65 7320 4e6f ting=604 Does No
01E0 7420 4578 6973 7420 416e 7977 6865 7265 t Exist Anywhere
01F0 6365 6976 652d 6f6e 6c79 3431 3420 5265 ceive-only414 Re
0200 7175 6573 742d 5552 4920 546f 6f20 4c6f quest-URI Too Lo
0210 6e67 6976 6575 7061 7261 6c6c 656c 3431 ngiveuparallel41
0220 3520 556e 7375 7070 6f72 7465 6420 4d65 5 Unsupported Me
0230 6469 6120 5479 7065 7273 6f6e 616c 673d dia Typersonalg=
0240 3138 3120 4361 6c6c 2049 7320 4265 696e 181 Call Is Bein
0250 6720 466f 7277 6172 6465 6465 6163 7469 g Forwardedeacti
0260 7661 7465 6434 3136 2055 6e73 7570 706f vated416 Unsuppo
0270 7274 6564 2055 5249 2053 6368 656d 6572 rted URI Schemer
0280 6765 6e63 7933 3030 204d 756c 7469 706c gency300 Multipl
0290 6520 4368 6f69 6365 736d 696d 6573 7361 e Choicesmimessa
02A0 6765 3438 3820 4e6f 7420 4163 6365 7074 ge488 Not Accept
02B0 6162 6c65 2048 6572 6570 6c61 6365 7334 able Hereplaces4
02C0 3233 2049 6e74 6572 7661 6c20 546f 6f20 23 Interval Too
02D0 4272 6965 6672 6f6d 2d74 6167 3438 3720 Briefrom-tag487
02E0 5265 7175 6573 7420 5465 726d 696e 6174 Request Terminat
02F0 6564 6967 6573 740d 0a61 3d6f 7269 656e edigest..a=orien
0300 743a 6c61 6e64 7363 6170 656e 6469 6e67 t:landscapending
0310 0d0a 613d 6b65 792d 6d67 6d74 3a4d 494b ..a=key-mgmt:MIK
0320 4559 3438 3320 546f 6f20 4d61 6e79 2048 EY483 Too Many H
0330 6f70 7363 7470 726f 7879 4f50 5449 4f4e opsctproxyOPTION
0340 5320 0d0a 436f 6e74 656e 742d 456e 636f S ..Content-Enco
0350 6469 6e67 3a20 474d 5468 752c 200d 0a50 ding: GMThu, ..P
0360 726f 7879 2d41 7574 686f 7269 7a61 7469 roxy-Authorizati
0370 6f6e 3a20 5365 7020 0d0a 4175 7468 656e on: Sep ..Authen
0380 7469 6361 7469 6f6e 2d49 6e66 6f3a 204a tication-Info: J
0390 756e 200d 0a52 6571 7565 7374 2d44 6973 un ..Request-Dis
03A0 706f 7369 7469 6f6e 3a20 4e6f 7620 0d0a position: Nov ..
03B0 436f 6e74 656e 742d 4469 7370 6f73 6974 Content-Disposit
03C0 696f 6e3a 204a 756c 2034 3038 2052 6571 ion: Jul 408 Req
03D0 7565 7374 2054 696d 656f 7574 6f6e 6534 uest Timeoutone4
03E0 3033 2046 6f72 6269 6464 656e 6f72 6573 03 Forbiddenores
03F0 6f75 7263 6533 3830 2041 6c74 6572 6e61 ource380 Alterna
0400 7469 7665 2053 6572 7669 6365 0d0a 5072 tive Service..Pr
0410 6f78 792d 4175 7468 656e 7469 6361 7465 oxy-Authenticate
0420 3a20 4d61 7220 3530 3320 5365 7276 6963 : Mar 503 Servic
0430 6520 556e 6176 6169 6c61 626c 6534 3035 e Unavailable405
0440 204d 6574 686f 6420 4e6f 7420 416c 6c6f Method Not Allo
0450 7765 6461 7574 682d 696e 7465 726c 6561 wedauth-interlea
0460 7669 6e67 3d0d 0a43 6f6e 7465 6e74 2d4c ving=..Content-L
0470 616e 6775 6167 653a 204a 616e 2036 3837 anguage: Jan 687
0480 2044 6961 6c6f 6720 5465 726d 696e 6174 Dialog Terminat
0490 6564 3531 3320 4d65 7373 6167 6520 546f ed513 Message To
04A0 6f20 4c61 7267 6533 3031 204d 6f76 6564 o Large301 Moved
04B0 2050 6572 6d61 6e65 6e74 6c79 3330 3220 Permanently302
SIPPING Working Group Expiration 11/30/02 Page 15
Garcia et. al. The static SIP/SDP dictionary for SigComp May 2002
04C0 4d6f 7665 6420 5465 6d70 6f72 6172 696c Moved Temporaril
04D0 790d 0a61 3d6f 7269 656e 743a 706f 7274 y..a=orient:port
04E0 7261 6974 6f2d 7461 6734 3032 2050 6179 raito-tag402 Pay
04F0 6d65 6e74 2052 6571 7569 7265 6435 3031 ment Required501
0500 204e 6f74 2049 6d70 6c65 6d65 6e74 6564 Not Implemented
0510 3439 3120 5265 7175 6573 7420 5065 6e64 491 Request Pend
0520 696e 6734 3036 204e 6f74 2041 6363 6570 ing406 Not Accep
0530 7461 626c 6534 3933 2055 6e64 6563 6970 table493 Undecip
0540 6865 7261 626c 6536 3036 204e 6f74 2041 herable606 Not A
0550 6363 6570 7461 626c 650d 0a61 3d74 7970 cceptable..a=typ
0560 653a 6272 6f61 6463 6173 7472 7565 3438 e:broadcastrue48
0570 3220 4c6f 6f70 2044 6574 6563 7465 646d 2 Loop Detectedm
0580 6f64 652d 6368 616e 6765 2d6e 6569 6768 ode-change-neigh
0590 626f 723d 3438 3920 4261 6420 4576 656e bor=489 Bad Even
05A0 746c 730d 0a6d 3d61 7070 6c69 6361 7469 tls..m=applicati
05B0 6f6e 2035 3032 2042 6164 2047 6174 6577 on 502 Bad Gatew
05C0 6179 6d6f 6465 2d63 6861 6e67 652d 7065 aymode-change-pe
05D0 7269 6f64 3d0d 0a61 3d6f 7269 656e 743a riod=..a=orient:
05E0 7365 6173 6361 7065 0d0a 4163 6365 7074 seascape..Accept
05F0 2d4c 616e 6775 6167 653a 200d 0a41 6363 -Language: ..Acc
0600 6570 742d 456e 636f 6469 6e67 3a20 6275 ept-Encoding: bu
0610 7369 6e65 7373 6970 6672 6167 756e 6b6e sinessipfragunkn
0620 6f77 6e6f 2d66 6f72 6b0d 0a61 3d74 7970 owno-fork..a=typ
0630 653a 6d6f 6465 7261 7465 6433 3035 2055 e:moderated305 U
0640 7365 2050 726f 7879 3430 3420 4e6f 7420 se Proxy404 Not
0650 466f 756e 640d 0a50 726f 7879 2d52 6571 Found..Proxy-Req
0660 7569 7265 3a20 0d0a 613d 7479 7065 3a72 uire: ..a=type:r
0670 6563 766f 6e6c 7975 6470 7265 663d 6d75 ecvonlyudpref=mu
0680 6c74 6970 6172 7469 6d65 6f75 740d 0a61 ltipartimeout..a
0690 3d74 7970 653a 6d65 6574 696e 674d 4553 =type:meetingMES
06A0 5341 4745 200d 0a6b 3d70 726f 6d70 743a SAGE ..k=prompt:
06B0 0d0a 556e 7375 7070 6f72 7465 643a 200d ..Unsupported: .
06C0 0a52 6574 7279 2d41 6674 6572 3a20 0d0a .Retry-After: ..
06D0 4d69 6e2d 4578 7069 7265 733a 200d 0a49 Min-Expires: ..I
06E0 6e2d 5265 706c 792d 546f 3a20 3138 3220 n-Reply-To: 182
06F0 5175 6575 6564 0d0a 5573 6572 2d41 6765 Queued..User-Age
0700 6e74 3a20 0d0a 613d 6672 616d 6572 6174 nt: ..a=framerat
0710 653a 0d0a 416c 6572 742d 496e 666f 3a20 e:..Alert-Info:
0720 4341 4e43 454c 203b 7265 7472 792d 6166 CANCEL ;retry-af
0730 7465 723d 0d0a 613d 6d61 7870 7469 6d65 ter=..a=maxptime
0740 3a34 3130 2047 6f6e 6575 6163 6861 6e6e :410 Goneuachann
0750 656c 733d 0d0a 5072 696f 7269 7479 3a20 els=..Priority:
0760 0d0a 5265 706c 6163 6573 3a20 0d0a 613d ..Replaces: ..a=
0770 7364 706c 616e 673a 0d0a 6d3d 636f 6e74 sdplang:..m=cont
0780 726f 6c20 0d0a 613d 7175 616c 6974 793a rol ..a=quality:
0790 0d0a 613d 6368 6172 7365 743a 0d0a 5265 ..a=charset:..Re
07A0 6665 722d 546f 3a20 6970 7365 632d 696b fer-To: ipsec-ik
07B0 6552 4546 4552 200d 0a61 3d6b 6579 7764 eREFER ..a=keywd
07C0 733a 0d0a 6b3d 6261 7365 3634 3a3b 7265 s:..k=base64:;re
07D0 6672 6573 6865 723d 3b74 7261 6e73 706f fresher=;transpo
07E0 7274 3d3b 6475 7261 7469 6f6e 3d0d 0a61 rt=;duration=..a
07F0 3d70 7469 6d65 3a3b 7265 6365 6976 6564 =ptime:;received
SIPPING Working Group Expiration 11/30/02 Page 16
Garcia et. al. The static SIP/SDP dictionary for SigComp May 2002
0800 3d0d 0a53 6572 7665 723a 200d 0a61 3d67 =..Server: ..a=g
0810 726f 7570 3a0d 0a6b 3d63 6c65 6172 3a0d roup:..k=clear:.
0820 0a4d 696e 2d53 453a 200d 0a41 6363 6570 .Min-SE: ..Accep
0830 743a 2049 4e46 4f20 6d6f 6465 2d73 6574 t: INFO mode-set
0840 3d0d 0a6d 3d64 6174 6120 0d0a 613d 746f =..m=data ..a=to
0850 6f6c 3a0d 0a61 3d6c 616e 673a 6e61 696d ol:..a=lang:naim
0860 6167 653b 6d65 7468 6f64 3d3b 7265 6173 age;method=;reas
0870 6f6e 3d0d 0a61 3d6d 6964 3a0d 0a61 3d63 on=..a=mid:..a=c
0880 6174 3a0d 0a6b 3d75 7269 3a0d 0a44 6174 at:..k=uri:..Dat
0890 653a 206f 7061 7175 653d 3b6d 6164 6472 e: opaque=;maddr
08A0 3d61 7574 733d 3b74 746c 3d4d 6f6e 2c20 =auts=;ttl=Mon,
08B0 5361 742c 2053 756e 2c20 4672 692c 2057 Sat, Sun, Fri, W
08C0 6564 2c20 5475 652c 203b 6964 3d63 7263 ed, Tue, ;id=crc
08D0 3d0d 0a72 3d0d 0a7a 3d0d 0a69 3d0d 0a75 =..r=..z=..i=..u
08E0 3d0d 0a65 3d3b 713d 7561 7336 3030 2042 =..e=;q=uas600 B
08F0 7573 7920 4576 6572 7977 6865 7265 6a65 usy Everywhereje
0900 6374 6564 3438 3020 5465 6d70 6f72 6172 cted480 Temporar
0910 696c 7920 556e 6176 6169 6c61 626c 650d ily Unavailable.
0920 0a61 3d74 7970 653a 482e 3333 3230 3220 .a=type:H.33202
0930 4163 6365 7074 6564 0d0a 4d65 6469 612d Accepted..Media-
0940 4175 7468 6f72 697a 6174 696f 6e3a 204f Authorization: O
0950 6374 200d 0a53 7562 7363 7269 7074 696f ct ..Subscriptio
0960 6e2d 5374 6174 653a 204d 6179 2034 3836 n-State: May 486
0970 2042 7573 7920 4865 7265 7175 6972 6564 Busy Herequired
0980 3430 3020 4261 6420 5265 7175 6573 7465 400 Bad Requeste
0990 6c3a 0d0a 5365 7373 696f 6e2d 4578 7069 l:..Session-Expi
09A0 7265 733a 200d 0a61 3d69 6e61 6374 6976 res: ..a=inactiv
09B0 6552 5450 2f53 4156 5020 5254 502f 4156 eRTP/SAVP RTP/AV
09C0 5046 200d 0a61 3d74 7970 653a 7465 7374 PF ..a=type:test
09D0 6f3d 0d0a 5265 636f 7264 2d52 6f75 7465 o=..Record-Route
09E0 3a20 0d0a 416c 6c6f 772d 4576 656e 7473 : ..Allow-Events
09F0 3a20 0d0a 4576 656e 743a 2020 2020 0d0a : ..Event: ..
0A00 613d 7265 6376 6f6e 6c79 0d0a 613d 7365 a=recvonly..a=se
0A10 6e64 6f6e 6c79 0d0a 633d 494e 2049 5034 ndonly..c=IN IP4
0A20 200d 0a52 6561 736f 6e3a 200d 0a41 6c6c ..Reason: ..All
0A30 6f77 3a20 0d0a 5061 7468 3a20 3b75 7365 ow: ..Path: ;use
0A40 723d 6672 6f6d 3d6d 6563 683d 0d0a 623d r=from=mech=..b=
0A50 4354 2041 5320 7072 6563 6f6e 6469 7469 CT AS preconditi
0A60 6f6e 6f6e 2d75 7267 656e 740d 0a61 3d73 onon-urgent..a=s
0A70 656e 6472 6563 7669 6465 6f63 7465 742d endrecvideoctet-
0A80 616c 6967 6e3d 3432 3020 4261 6420 4578 align=420 Bad Ex
0A90 7465 6e73 696f 6e6f 6e2d 7265 6375 7273 tensionon-recurs
0AA0 656e 642d 6f6e 6c79 512e 3835 3035 2056 end-onlyQ.8505 V
0AB0 6572 7369 6f6e 204e 6f74 2053 7570 706f ersion Not Suppo
0AC0 7274 6564 6f6d 6169 6e3d 3530 3420 5365 rtedomain=504 Se
0AD0 7276 6572 2054 696d 652d 6f75 7469 6d65 rver Time-outime
0AE0 7265 6e64 6572 6561 6c6d 3d53 5542 5343 renderealm=SUBSC
0AF0 5249 4245 2035 3830 2050 7265 636f 6e64 RIBE 580 Precond
0B00 6974 696f 6e20 4661 696c 7572 6573 706f ition Failurespo
0B10 6e73 653d 3432 3220 5365 7373 696f 6e20 nse=422 Session
0B20 5469 6d65 7220 546f 6f20 536d 616c 6c6f Timer Too Smallo
0B30 6361 6c69 7073 6563 2d6d 616e 6461 746f calipsec-mandato
SIPPING Working Group Expiration 11/30/02 Page 17
Garcia et. al. The static SIP/SDP dictionary for SigComp May 2002
0B40 7279 3431 3320 5265 7175 6573 7420 456e ry413 Request En
0B50 7469 7479 2054 6f6f 204c 6172 6765 3265 tity Too Large2e
0B60 6170 706c 6963 6174 696f 6e2f 7364 700d application/sdp.
0B70 0a0d 0a50 2d4d 6564 6961 2d41 7574 686f ...P-Media-Autho
0B80 7269 7a61 7469 6f6e 3a20 4465 6320 3630 rization: Dec 60
0B90 3320 4465 636c 696e 6578 746e 6f6e 6365 3 Declinextnonce
0BA0 3d61 7474 656e 6461 6e74 6370 6174 6865 =attendantcpathe
0BB0 6164 6572 7370 6175 7468 3d31 3833 2053 aderspauth=183 S
0BC0 6573 7369 6f6e 2050 726f 6772 6573 7369 ession Progressi
0BD0 7073 3a0d 0a4e 6574 776f 726b 2d41 7373 ps:..Network-Ass
0BE0 6572 7465 642d 4944 3a20 4175 6720 6861 erted-ID: Aug ha
0BF0 6c66 6169 6c75 7265 6d6f 7465 726d 696e lfailuremotermin
0C00 6174 6564 0d0a 5365 6375 7269 7479 2d4d ated..Security-M
0C10 6563 6861 6e69 736d 3a20 4170 7220 3438 echanism: Apr 48
0C20 3520 416d 6269 6775 6f75 7365 726e 616d 5 Ambiguousernam
0C30 653d 6661 6c73 6571 7565 6e74 6961 6c67 e=falsequentialg
0C40 6f72 6974 686d 3d0d 0a57 5757 2d41 7574 orithm=..WWW-Aut
0C50 6865 6e74 6963 6174 653a 2046 6562 204d henticate: Feb M
0C60 4435 2d73 6573 7369 6f6e 6f72 6d61 6c34 D5-sessionormal4
0C70 3031 2055 6e61 7574 686f 7269 7a65 6453 01 UnauthorizedS
0C80 4354 5052 4143 4b20 0d0a 743d 3020 302e CTPRACK ..t=0 0.
0C90 302e 302e 3061 7564 696f 7074 696f 6e61 0.0.0audioptiona
0CA0 6c65 7274 0d0a 436f 6e74 656e 742d 4c65 lert..Content-Le
0CB0 6e67 7468 3a20 696e 666f 5245 4749 5354 ngth: infoREGIST
0CC0 4552 200d 0a41 7574 686f 7269 7a61 7469 ER ..Authorizati
0CD0 6f6e 3a20 3b6c 7265 6665 720d 0a43 6f6e on: ;lrefer..Con
0CE0 7465 6e74 2d54 7970 653a 200d 0a63 3d49 tent-Type: ..c=I
0CF0 4e20 4950 3620 3138 3020 5269 6e67 696e N IP6 180 Ringin
0D00 6741 4b41 766f 6963 652d 6d61 696c 3130 gAKAvoice-mail10
0D10 3020 5472 7969 6e67 763d 300d 0a6f 3d55 0 Tryingv=0..o=U
0D20 5044 4154 4520 4e4f 5449 4659 200d 0a53 PDATE NOTIFY ..S
0D30 7570 706f 7274 6564 3a20 414d 5254 502f upported: AMRTP/
0D40 4156 5020 0d0a 4578 7069 7265 733a 200d AVP ..Expires: .
0D50 0a50 7269 7661 6379 3a20 0d0a 5265 7175 .Privacy: ..Requ
0D60 6972 653a 200d 0a61 3d72 7470 6d61 703a ire: ..a=rtpmap:
0D70 0d0a 6d3d 7669 6465 6f20 0d0a 6d3d 6175 ..m=video ..m=au
0D80 6469 6f20 0d0a 733d 200d 0a52 6f75 7465 dio ..s= ..Route
0D90 3a20 0d0a 613d 6375 7272 3a3b 6578 7069 : ..a=curr:;expi
0DA0 7265 733d 0d0a 613d 666d 7470 3a0d 0a61 res=..a=fmtp:..a
0DB0 3d63 6f6e 663a 6963 6f6e 6f6e 650d 0a52 =conf:iconone..R
0DC0 4163 6b3a 200d 0a61 3d64 6573 3a0d 0a52 Ack: ..a=des:..R
0DD0 5365 713a 2042 5945 2044 6967 6573 7420 Seq: BYE Digest
0DE0 636e 6f6e 6365 3d31 3030 7265 6c75 7269 cnonce=100reluri
0DF0 3d71 6f70 3d6e 633d 786d 6c71 6f73 3b63 =qop=nc=xmlqos;c
0E00 6f6d 703d 7369 6763 6f6d 7072 6f62 6174 omp=sigcomprobat
0E10 696f 6e6f 2d71 7565 7565 0d0a 5669 613a iono-queue..Via:
0E20 2053 4950 2f32 2e30 2f54 4350 2054 4c53 SIP/2.0/TCP TLS
0E30 3b62 7261 6e63 683d 7a39 6847 3462 4b0d ;branch=z9hG4bK.
0E40 0a56 6961 3a20 5349 502f 322e 302f 5544 .Via: SIP/2.0/UD
0E50 5020 0d0a 4d61 782d 466f 7277 6172 6473 P ..Max-Forwards
0E60 3a20 494e 5649 5445 2041 6e6f 6e79 6d6f : INVITE Anonymo
0E70 7573 6970 3a0d 0a43 616c 6c2d 4944 3a20 usip:..Call-ID:
SIPPING Working Group Expiration 11/30/02 Page 18
Garcia et. al. The static SIP/SDP dictionary for SigComp May 2002
0E80 0d0a 436f 6e74 6163 743a 2032 3030 204f ..Contact: 200 O
0E90 4b0d 0a46 726f 6d3a 200d 0a43 5365 713a K..From: ..CSeq:
0EA0 200d 0a54 6f3a 203b 7461 673d 0e71 0004 ..To: ;tag=.q..
Table 3: binary representation of the static SIP/SDP
dictionary for SigComp
6. Security Considerations
This memo does not introduce any known security risk.
7. IANA Considerations
None.
8. Author's Addresses
Miguel A. Garcia
Ericsson
FIN-02420, Jorvas, Finland
Tel: +358 9299 3553
e-mail: miguel.a.garcia@ericsson.com
Carsten Bormann
Universitaet Bremen TZI
Postfach 330440
D-28334 Bremen, Germany
Tel: +49 421 218 7024
e-mail: cabo@tzi.org
Joerg Ott
Universitaet Bremen TZI
Bibliothekstr. 1
Bremen 28359, Germany
Tel: +49.421.201-7028
e-mail: jo@tzi.uni-bremen.de
Richard Price
Roke Manor Research Ltd
Romsey, Hants, SO51 0ZN, United Kingdom
Tel: +44 1794 833681
e-mail: richard.price@roke.co.uk
Adam Roach
dynamicsoft
5100 Tennyson Parkway, Suite 1200
Plano, TX 75024, USA
e-mail: adam@dynamicsoft.com
9. Acknowledgements
SIPPING Working Group Expiration 11/30/02 Page 19
Garcia et. al. The static SIP/SDP dictionary for SigComp May 2002
The authors would like to thank Lars-Erik Jonsson, Zhigang C. Lie and
Jonathan Rosenberg for their valuable comments.
10. References
10.1 Normative references
1. R. Price, H. Hannu, C. Bormann, J. Christoffersson, Z. Liu, J.
Rosenberg, Signaling Compression (SigComp), draft-ietf-rohc-
sigcomp-06.txt, May 2002, work in progress.
10.2 Informative references
2. J. Rosenberg, H. Schulzrinne, G. Camarillo, A. Johnston, J.
Peterson, R. Sparks, M. Handley, E. Schooler, Session Initiation
Protocol, Request for Comments 3261, May 2002.
3. M. Garcia et al, 3GPP requirements on SIP, draft-sipping-garcia-
3gpp-reqs-03.txt, work in progress.
4. F. Yergeau, "UTF-8, a transformation format of ISO 10646,"
Request for Comments 2279, Internet Engineering Task Force, Jan.
1998.
5. J. Franks, P. Hallam-Baker, J. Hostetler, S. Lawrence, P. Leach,
A. Luotonen, L. Stewart, HTTP Authentication: Basic and Digest
Access Authentication, Request for Comments 2617, June 1999.
6. A. Vaha-Sipila, URLs for telephone calls, Request for Comments
2806, Internet Engineering Task Force, Apr. 2000.
7. S. Donovan, The SIP INFO Method, Request for Comments 2976,
October 2000.
8. A. Roach, SIP-Specific Event Notification, Request for Comments
3265, May 2002.
9. J. Rosenberg, H. Schulzrinne, Reliability of Provisional
Responses in SIP, Request for Comments 3262, May 2002.
10.
J. Rosenberg, The Session Initiation Protocol UPDATE Method,
draft-ietf-sip-update-02.txt, April 2002, work in progress.
11.
G. Camarillo, W. Marshall, J. Rosenberg, Integration of Resource
Management and SIP, draft-ietf-sip-manyfolks-resource-07.txt,
April 2002, work in progress.
12.
R. Sparks, The Refer Method, draft-sparks-sip-refer-split-00,
April 2002, work in progress.
SIPPING Working Group Expiration 11/30/02 Page 20
Garcia et. al. The static SIP/SDP dictionary for SigComp May 2002
13.
R. Mahy, B. Biggs, R. Dean, The SIP Replaces header, draft-ietf-
sip-replaces-01.txt, April 2002, work in progress.
14.
R. Sparks, Internet Media Types message/sip and message/sipfrag,
draft-sparks-sip-mimetypes-03.txt, April 2002, work in progress.
15.
D. Willis, B. Hoeneisen, SIP Extension for Registering Non-
Adjacent Contacts, draft-willis-sip-path-05, work in progress.
16.
H. Schulzrinne, D. Oran, G. Camarillo, The Reason Header Field
for the Session Initiation Protocol, draft-ietf-sip-reason-
00.txt, April 2002, work in progress.
17.
S. Donovan, J. Rosenberg, The SIP Session Timer, draft-ietf-sip-
session-timer-08.txt, October 2001, work in progress.
18.
A. Niemi, J. Arkko, V. Torvinen, HTTP Digest Authentication
Using AKA, draft-ietf-sip-digest-aka-01, April 2002, work in
progress.
19.
J. Arkko, T. Haukka, S. Sen, L. Valerius, Security Mechanism
Agreement for SIP Sessions, draft-ietf-sip-sec-agree-00.txt,
April 2002, working progress.
20.
B. Campbell, J. Rosenberg, D. Willis, R. Sparks, H. Schulzrinne,
J. Lennox, C. Huitema, B. Aboba, D. Gurle, D. Oran, Session
Initiation Protocol Extension for Instant Messaging, draft-ietf-
sip-message-03, April 2002, work in progress.
21.
W. Marshall, F. Andreasen, D. Evans, SIP Extensions for Media
Authorization, draft-ietf-sip-call-auth-05.txt, May 2002, work in
progress.
22.
H. Schulzrinne, J. Rosenberg, SIP Caller Preferences and Callee
Capabilities, draft-ietf-sip-callerprefs-04.txt, December 2001,
work in progress.
23.
G. Camarillo, Compressing the Session Initiation Protocol,
draft-camarillo-sip-compression-00.txt, April 2002, work in
progress.
24.
M. Handley, V. Jacobson, C. Perkins, SDP: Session Description
Protocol, draft-ietf-mmusic-sdp-new-07.txt, work in progress.
25.
J. Rosenberg, H. Schulzrinne, G. Camarillo, A. Johnston, J.
Peterson, R. Sparks, M. Handley, E. Schooler, Session Initiation
Protocol, Request for Comments 3261, May 2002.
26.
R. Price, H. Hannu, C. Bormann, J. Christoffersson, Z. Liu, J.
Rosenberg, Signaling Compression (SigComp), draft-ietf-rohc-
sigcomp-05.txt, March 2002, work in progress.
SIPPING Working Group Expiration 11/30/02 Page 21
Garcia et. al. The static SIP/SDP dictionary for SigComp May 2002
27.
F. Yergeau, "UTF-8, a transformation format of ISO 10646,"
Request for Comments 2279, Internet Engineering Task Force, Jan.
1998.
28.
J Sjoberg, M. Westerlund, A. Lakaniemi, Q. Xie, RTP payload
format and file storage format for the Adaptive Multi-Rate (AMR)
and Adaptive Multi-Rate Wideband (AMR-WB) audio codecs, draft-
ietf-avt-rtp-amr-13.txt, January 2002, work in progress.
29.
G. Camarillo, J. Holler, G. AP Eriksson, H. Schulzrinne,
Grouping of media lines in SDP, draft-ietf-mmusic-fid-06.txt,
February 2002, work in progress.
30.
H. Schulzrinne, S. Petrack, RTP Payload for DTMF Digits,
Telephony Tones and Telephony Signals, RFC 2833, May 2000.
31.
J. Arkko, E. Carrara, F. Lindholm, M. Naslund, K. Norrman, Key
Management Extensions for SDP and RTSP, draft-ietf-mmusic-kmgmt-
ext-04.txt, April 2002, work in progress.
32.
J. Arkko, E. Carrara, F. Lindholm, M. Naslund, K. Norrman,
MIKEY: Multimedia Internet KEYing, draft-ietf-msec-mikey-01.txt
April 2002.
33.
M. Baugher, R. Blom, E. Carrara, D. McGrew, M. Naslund, K.
Norrman, D. Oran, The Secure Real Time Transport Protocol, draft-
ietf-avt-srtp-03.txt, Frbruary 2002, work in progress.
34.
J. Ott, S. Wenger, S. Fukunaga, N. Sato, K. Yano, A. Miyazaki,
K. Hata, R. Hakenberg, C. Burmeister, Extended RTP Profile for
RTCP-based feedback (RTP/AVPF), draft-ietf-avt-rtcp-feedback-
02.txt, March 2002, work in progress.
35.
J. Rosenberg, H.Schulzrinne, An Offer/Answer Model with SDP, RFC
3264.
36.
C. Jennings, Extensions to the Session Initiation Protocol (SIP)
for Network Asserted Identity within Trusted Networks, draft-
jennings-sipping-nai-00.txt, May 2002, work in progress.
37.
J. Peterson, A Privacy Mechanism for the Session Initiation
Protocol (SIP), draft-peterson-sip-privacy-longterm-00, April
2002, work in progress.
Full Copyright Statement
Copyright (C) The Internet Society (2002). 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
SIPPING Working Group Expiration 11/30/02 Page 22
Garcia et. al. The static SIP/SDP dictionary for SigComp May 2002
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 languages other than English. The limited
permissions granted above are perpetual and will not be revoked by the
Internet Society or its successors or assigns. 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 IMPLIED, INCLUDING BUT NOT LIMITED TO ANY
WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY
RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE."
Expiration Date
This memo is filed as <draft-ietf-sipping-sigcomp-sip-dictionary-01>,
and expires November 22, 2002.
SIPPING Working Group Expiration 11/30/02 Page 23
Datatracker
Report a datatracker bug
draft-ietf-sipping-sigcomp-sip-dictionary-01
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