
Media Feature Tags [RFC2506]
Prefix: iso.org.dod.internet.features (1.3.6.1.8)

(last updated 2007-08-29)

Features the following registries:
Prefix: iso.org.dod.internet.features.ietf-tree (1.3.6.1.8.1)
Prefix: iso.org.dod.internet.features.global-tree (1.3.6.1.8.2)
Prefix: iso.org.dod.internet.features.uri-tree (1.3.6.1.8.3)
Prefix: iso.org.dod.internet.features.sip-tree (1.3.6.1.8.4)

Prefix: iso.org.dod.internet.features.ietf-tree (1.3.6.1.8.1) - per [RFC2506]
Registration Procedures: IETF Consensus

Decimal   Name                    Description              Reference
-------   ----                    -----------              ---------
     1    pix-x                   horizontal pixels        [RFC2534]
     2    pix-y                   vertical pixels          [RFC2534]
     3    dpi                     dots-per-inch            [RFC2534]
     4    ua-media                ua-media                 [RFC2534]
     5    paper-size              paper-size               [RFC2534]
     6    color                   color                    [RFC2534]
     7    size-x                  size-x                   [RFC2531]
     8    size-y                  size-y                   [RFC2531]
     9    dpi-xyratio             dpi-xyratio              [RFC2531]
    10    color-levels            color-levels             [RFC2531]
    11    color-space             color-space              [RFC2531]
    12    CIELAB-L-depth          CIELAB-L-depth           [RFC2531]
    13    CIELAB-A-depth          CIELAB-A-depth           [RFC2531]
    14    CIELAB-B-depth          CIELAB-B-depth           [RFC2531]
    15    CIELAB-L-min            CIELAB-L-min             [RFC2531]
    16    CIELAB-L-max            CIELAB-L-max             [RFC2531]
    17    CIELAB-a-min            CIELAB-a-min             [RFC2531]
    18    CIELAB-a-max            CIELAB-a-max             [RFC2531]
    19    CIELAB-b-min            CIELAB-b-min             [RFC2531]
    20    CIELAB-b-max            CIELAB-b-max             [RFC2531]
    21    image-file-structure    image-file-structure     [RFC2531]
    22    image-coding            image-coding             [RFC2531]
    23    image-coding-constraint image-coding-constraint  [RFC2531]
    24    JBIG-stripe-size        JBIG-stripe-size         [RFC2531]
    25    image-interleave        image-interleave         [RFC2531]
    26    color-subsampling       color-subsampling        [RFC2531]
    27    MRC-mode                MRC-mode                 [RFC2531]
    28    MRC-max-stripe-size     MRC-max-stripe-size      [RFC2531]
    29    color-illuminant        color-illuminant         [RFC2879]
    30    type                    type                     [RFC2913]
    31    charset                 charset                  [RFC2987]
    32    language                language                 [RFC2987] 


Prefix: iso.org.dod.internet.features.global-tree (1.3.6.1.8.2) - per [RFC2506]
Registration Procedures: Expert Review

Decimal   Name             Description                            References
-------   ----             -----------                            ----------
     1    g.3gpp.cs-voice  This feature-tag indicates that        [Meredith] [ETSI TS 124 279]  
                           the device supports circuit switched  
                           voice when combining circuit switched 
                           calls and IM sessions.
     2    g.3gpp.cs-video  This feature-tag indicates that        [Meredith] [ETSI TS 124 279]
                           the device supports circuit switched 
                           video when combining circuit switched 
                           video calls and IM sessions.
     3    g.3gpp.smsip     This feature-tag indicates that        [Meredith] [ETSI TS 124 341]
                           the device is capable of accepting  
                           SMS messages via SIP as specified by  
                           ETSI TS 124 341.


Prefix: iso.org.dod.internet.features.uri-tree (1.3.6.1.8.3)  - per [RFC2506]
Registration Procedures:

Decimal   Name            Description                     References
-------   ----            -----------                     ----------


Prefix: iso.org.dod.internet.features.sip-tree (1.3.6.1.8.4) - per [RFC3840]
Registration Procedures: IETF Consensus

Decimal  Name             Description                                     Reference
-------  ----             -----------                                     ---------
     1   sip.audio        This feature tag indicates that                 [RFC3840]
                          the device supports audio as a
                          streaming media type.

     2   sip.application  This feature tag indicates that                 [RFC3840]
                          the device supports application as
                          a streaming media type. This feature
                          tag exists primarily for completeness.
                          Since so many MIME types are underneath
                          application, indicating the ability to
                          support applications provides little 
                          useful information.

     3   sip.data         This feature tag indicates that                 [RFC3840]
                          the device supports data as a  
                          streaming media type.

     4   sip.control      This feature tag indicates that                 [RFC3840]
                          the device supports control as a 
                          streaming media type.

     5   sip.video        This feature tag indicates that                 [RFC3840]
                          the device supports video as a 
                          streaming media type.

     6   sip.text         This feature tag indicates that                 [RFC3840]
                          the device supports text as a 
                          streaming media type.

     7   sip.automata     The sip.automata feature tag is a               [RFC3840]
                          boolean value that indicates whether 
                          the UA represents an automata (such 
                          as a voicemail server, conference
                          server, IVR, or recording device) or a human.


     8   sip.class        This feature tag indicates the                  [RFC3840]
                          setting, business or personal, in 
                          which a communications device is used.

     9   sip.duplex       The sip.duplex media feature tag                [RFC3840] 
                          indicates whether a communications 
                          device can simultaneously send and 
                          receive media ("full"), alternate 
                          between sending and receiving ("half"), 
                          can only receive ("receive-only")
                          or only send ("send-only").

    10   sip.mobility     The sip.mobility feature tag                    [RFC3840]
                          indicates whether the device is 
                          fixed (meaning that it is associated 
                          with a fixed point of contact with 
                          the network), or mobile (meaning that 
                          it is not associated with a fixed 
                          point of contact). Note that cordless 
                          phones are fixed, not mobile, based
                          on this definition.

    11   sip.description  The sip.description feature tag                 [RFC3840]
                          provides a textual description of 
                          the device.

    12   sip.events       Each feature tag value indicates                [RFC3840]
                          a SIP event package supported 
                          by a SIP UA. The values for this tag 
                          equal the event package names that are
                          registered by each event package.

    13   sip.priority     The sip.priority feature tag                    [RFC3840]
                          indicates the call priorities the 
                          device is willing to handle. A value 
                          of X means that the device is willing 
                          to take requests with priority X and 
                          higher. This does not imply that a
                          phone has to reject calls of lower 
                          priority. As always, the decision on 
                          handling of such calls is a matter 
                          of local policy.

    14   sip.methods      Each value of the sip.methods                   [RFC3840]
                          (note the plurality) feature tag 
                          indicates a SIP method supported by 
                          this UA. In this case, "supported" means 
                          that the UA can receive requests with 
                          this method. In that sense, it has the 
                          same connotation as the Allow header field.


    15   sip.extensions   Each value of the sip.extensions                [RFC3840] 
                          feature tag is a SIP extension (each of 
                          which is defined by an option-tag registered 
                          with IANA) that is understood by the UA. 
                          Understood, in this context, means that 
                          the option tag would be included in a 
                          Supported header field in a request.

    16   sip.schemes      Each value of the sip.schemes (note             [RFC3840]
                          the plurality) media feature tag 
                          indicates a URI scheme that is 
                          supported by a UA. Supported implies, 
                          for example, that the UA would know 
                          how to handle a URI of that scheme
                          in the Contact header field of a 
                          redirect response.

    17   sip.actor        This feature tag indicates the type             [RFC3840]
                          of entity that is available at this URI.


    18   sip.isfocus      This feature tag indicates that the             [RFC3840]
                          UA is a conference server, also known 
                          as a focus, and will mix together the 
                          media for all calls to the same URI.

    19   sip.byeless      The feature tag is a boolean flag.              [RFC4235]     
	                      When set it indicates that the device
                          is incapable of terminating a session 
                          autonomously.

   20   sip.rendering     This feature tag contains one of three          [RFC4235] 
                          tokens indicating if the device is 
                          rendering any media from the current
                          session ("yes"), none of the media from
                          the current session ("no"), or if this  
                          status is not known to the device 
                          ("unknown").

   21   sip.message       This feature tag indicates that the device      [RFC4569]
                          supports message as a streaming media type.


References
----------
[RFC2506]  Holtman, K., Mutz, A., and T. Hardie, "Media Feature Tag
           Registration Procedure", BCP 31, RFC 2506, March 1999.

[RFC2531]  Klyne, G., and L. McIntyre, "Content Feature Schema for
           Internet Fax", RFC 2531, March 1999.

[RFC2534]  Masinter, L., Holtman, K., Mutz, A., and D. Wing, "Media
           Features for Display, Print, and Fax", RFC 2534, March 1999.   

[RFC2879]  Klyne, G. and L. McIntyre, "Content Feature Schema for
           Internet Fax (V2)", RFC 2879, August 2000.
 
[RFC2913]  Klyne, G., "MIME Content Types in Media Feature
           Expressions", RFC 2913, September 2000.

[RFC2987]  Hoffman, P., "Registration of Charset and Languages Media
           Features Tags", RFC 2987, November 2000.
 
[RFC3840]  J. Rosenberg, H. Schulzrinne, and P. Kyzivat, "Indicating 
           User Agent Capabilities in the Session Initiation Protocol",
           RFC 3840, August 2004.

[RFC4235]  J. Rosenberg, H. Schulzrinne, and R. Mahy, Ed.,
           "An INVITE Inititiated Dialog Event Package for the Session 
           Initiation Protocol (SIP)", RFC 4235, November 2005.

[RFC4569]  G. Camarillo, "Internet Assigned Numbers Authority (IANA) 
           Registration of the Message Media Feature Tag", RFC 4569,
           July 2006.

[ETSI TS 124 279]
           http://www.etsi.org/services_products/freestandard/home.htm

[ETSI TS 124 341]
           http://www.etsi.org/services_products/freestandard/home.htm

People
------

[Meredith] John M Meredith, <john.meredith&etsi.org>, 2007-04-20, 2007-08-29.

[]
