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RFC 7612

 
 
 

Lightweight Directory Access Protocol (LDAP): Schema for Printer Services

Part 2 of 3, p. 13 to 41
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4.  Definition of Attribute Types

   The following attribute types are referenced by the object classes
   defined in Section 3.

   The following attribute types reference syntax OIDs defined in
   Section 3 of [RFC4517] (see Section 5 ("Definition of Syntaxes")
   below).

   The following attribute types reference matching rule names (instead
   of OIDs) for clarity (see Section 6 below).  For optional attributes,
   if the Printer information is not known, the attribute value
   SHOULD NOT be set.  In the following definitions, referenced matching
   rules are defined in Section 4 of [RFC4517] and discussed in
   Section 6 ("Definition of Matching Rules") later in this document.

   Note: For compatibility with existing implementations of [RFC3712]
   and underlying string length limits in [RFC2707], [RFC2911],
   [RFC3805], [PWG5107.2], [PWG5100.13], and [PWG5100.14],
   implementations of the attributes defined in this document SHOULD NOT
   exceed those underlying string length limits (to avoid truncation and
   false matches).

   Note: For interoperability and consistent text display, values of
   attributes defined in this document (a) SHOULD be normalized as
   recommended in "Unicode Format for Network Interchange" [RFC5198];
   (b) SHOULD NOT contain DEL or any C0 or C1 control characters except
   for HT, CR, and LF; (c) SHOULD only contain CR and LF characters
   together (not as singletons); and (d) SHOULD NOT contain HT, CR, or
   LF characters in names, e.g., printer-name and printer-aliases.

   Note: Some of the following attributes are described as 'List of xxx'
   (using a comma as the member delimiter).  Some other attributes are
   described as 'One of xxx' (single-valued).  In all cases, any
   attribute can have multiple values represented as multiple instances,
   except where explicitly restricted in syntax to be single-valued.

   Note: Values of the string attributes printer-xri-supported and
   printer-resolution-supported use different field delimiters ('<' and
   '>', respectively).  These two field delimiters are different for
   compatibility with the corresponding attributes in the IANA-
   registered SLP 'service:printer:' v2.0 template [SLPPRT20], which was
   defined before the original LDAP Printer Schema [RFC3712] was
   written.

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   The following table is a summary of the attribute names defined by
   this document and their corresponding source document names as
   defined in [RFC2911], [RFC3805], [PWG5107.2], or [PWG5100.13].  Some
   source attribute names have been prefixed with 'printer-' as
   recommended in [RFC2926], to address the flat namespace for LDAP
   identifiers.

   LDAP and SLP Printer Schema     Source Document and Attribute Name
   ------------------------------  -------------------------------------
   ***                             IPP/1.1 and Semantics Model [RFC2911]
   printer-uri
   printer-xri-supported
                                   [printer-uri-supported]
                                   [uri-authentication-supported]
                                   [uri-security-supported]
   printer-name                    printer-name
   printer-natural-language-configured
                                   natural-language-configured
   printer-location                printer-location
   printer-info                    printer-info
   printer-more-info               printer-more-info
   printer-make-and-model          printer-make-and-model
   printer-ipp-versions-supported  ipp-versions-supported
   printer-multiple-document-jobs-supported
                                   multiple-document-jobs-supported
   printer-charset-configured      charset-configured
   printer-charset-supported       charset-supported
   printer-generated-natural-language-supported
                                   generated-natural-language-supported
   printer-document-format-supported
                                   document-format-supported
   printer-color-supported         color-supported
   printer-compression-supported   compression-supported
   printer-pages-per-minute        pages-per-minute
   printer-pages-per-minute-color  pages-per-minute-color
   printer-finishings-supported    finishings-supported
   printer-number-up-supported     number-up-supported
   printer-sides-supported         sides-supported
   printer-media-supported         media-supported
   printer-media-local-supported   [site names from IPP media-supported]
   printer-resolution-supported    printer-resolution-supported
   printer-print-quality-supported print-quality-supported
   printer-job-priority-supported  job-priority-supported
   printer-copies-supported        copies-supported
   printer-job-k-octets-supported  job-k-octets-supported

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   ***                             Printer MIB v2 [RFC3805]
   printer-current-operator        prtGeneralCurrentOperator
   printer-service-person          prtGeneralServicePerson
   printer-delivery-orientation-supported
                                   prtOutputPageDeliveryOrientation
   printer-stacking-order-supported
                                   prtOutputStackingOrder
   printer-output-features-supported
                                   [prtOutputBursting]
                                   [prtOutputDecollating]
                                   [prtOutputPageCollated]
                                   [prtOutputOffsetStacking]
   printer-aliases                 prtGeneralPrinterName

   ***                             Cmd Set 1284 Device ID [PWG5107.2]
   printer-device-id               printer-device-id

   ***                             IPP Job/Printer Ext Set3 [PWG5100.13]
   printer-device-service-count    device-service-count
   printer-uuid                    printer-uuid
   printer-charge-info             printer-charge-info
   printer-charge-info-uri         printer-charge-info-uri
   printer-geo-location            printer-geo-location
   printer-ipp-features-supported  ipp-features-supported

4.1.  printer-uri

   ( 1.3.18.0.2.4.1140
   NAME 'printer-uri'
   DESC 'A URI supported by this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   If the printer-xri-supported LDAP attribute is implemented, then this
   printer-uri value MUST be listed in printer-xri-supported.

   See [STD66] for details of URI syntax.

   Note: For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 1023 octets in length.

   Note: LDAP application clients SHOULD NOT attempt to use malformed
   URI values read from this attribute.  LDAP administrative clients
   SHOULD NOT write malformed URI values into this attribute.

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   Note: See "Internet Printing Protocol/1.1: IPP URL Scheme" [RFC3510]
   and "Internet Printing Protocol (IPP) over HTTPS Transport Binding
   and the 'ipps' URI Scheme" [RFC7472] for conforming URI for IPP
   Printers.

   Note: For SLP-registered Printers, the LDAP printer-uri attribute
   SHOULD be set to the value of the SLP-registered URL of the Printer,
   for interworking with SLPv2 [RFC2608] service discovery.

   Note: See Sections 1.4.1, 1.4.2, and 1.4.3 for rationale for design
   choices.

4.2.  printer-xri-supported

   ( 1.3.18.0.2.4.1107
   NAME 'printer-xri-supported'
   DESC 'An XRI (extended resource identifier) supported by
         this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   Each value of this attribute MUST consist of a URI (uniform resource
   identifier) followed by (optional) authentication and security
   fields.

   Each XRI field MUST be delimited by '<', with optional trailing
   whitespace.  For example:

      'uri=ipp://example.com/ipp< auth=digest< sec=tls<'
      'uri=ipps://example.com/ipp< auth=digest< sec=tls<'
      'uri=lpr://example.com/lpr< auth=none< sec=none<'
      'uri=mailto:printer@example.com< auth=none< sec=none<'

   Note: See the note in Section 4 about the different field delimiters
   used in the printer-xri-supported and printer-resolution-supported
   attributes ('<' and '>', respectively), chosen for compatibility with
   the IANA-registered SLP 'service:printer:' v2.0 template [SLPPRT20].

   Note: Multiple values for this attribute are represented as multiple
   instances of this attribute.

   See [STD66] for details of URI syntax.

   Note: For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 1023 octets in length.

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   Note: LDAP application clients SHOULD NOT attempt to use malformed
   URI values read from this attribute.  LDAP administrative clients
   SHOULD NOT write malformed URI values into this attribute.

   Note: This attribute is based on the IPP/1.1 [RFC2911] attributes
   'printer-uri-supported', 'uri-authentication-supported', and
   'uri-security-supported' (called the 'Three Musketeers' because they
   are parallel, ordered attributes).  This attribute unfolds those
   IPP/1.1 attributes and thus avoids the ordering (and same number of
   values) constraints of the IPP/1.1 separate attributes.

   Defined keywords for fields include:

      'uri' (IPP 'printer-uri-supported')
      'auth' (IPP 'uri-authentication-supported')
      'sec' (IPP 'uri-security-supported')

   A missing 'auth' field SHOULD be interpreted to mean 'none'.  Per
   IPP/1.1 [RFC2911], "IPP Job and Printer Extensions - Set 3 (JPS3)"
   [PWG5100.13], and the IANA IPP registry [IANAIPP], defined values of
   the 'auth' field include:

      'none' (no authentication for this URI)
      'requesting-user-name' (from operation request)
      'basic' (HTTP/1.1 Basic [RFC2617] and [RFC7235])
      'digest' (HTTP/1.1 Digest [RFC2617] and [RFC7235])
      'certificate' (X.509 Certificate [RFC5280] and [RFC6818])
      'negotiate' (HTTP/1.1 Negotiate [RFC4559])

   The 'certificate' value refers to the IPP Client certificate
   extracted from the TLS session.

   A missing 'sec' field SHOULD be interpreted to mean 'none'.  Per
   IPP/1.1 [RFC2911] and the IANA IPP registry [IANAIPP], defined values
   of the 'sec' field include:

      'none' (no security for this URI)
      'ssl3' (Netscape's Secure Socket Layer protocol (SSL3))
      'tls' (IETF TLS, [RFC5246])

   Note: The syntax and delimiter for this attribute are aligned with
   the equivalent attribute in the 'service:printer:' v2.0 template
   [SLPPRT20].  Whitespace is permitted after (but not before) the
   delimiter '<'.

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   Note: See "Internet Printing Protocol/1.1: IPP URL Scheme" [RFC3510]
   and "Internet Printing Protocol (IPP) over HTTPS Transport Binding
   and the 'ipps' URI Scheme" [RFC7472] for conforming URI for IPP
   Printers.

   Note: See Sections 1.4.1, 1.4.2, and 1.4.3 for rationale for design
   choices.

4.3.  printer-name

   ( 1.3.18.0.2.4.1135
   NAME 'printer-name'
   DESC 'The site-specific administrative name of this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   Values of this attribute SHOULD be specified in the language
   specified in printer-natural-language-configured (for example, to
   support text-to-speech conversions), although the Printer's name MAY
   be specified in any language.

   Note: For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 255 octets in length.

   Note: This name can be the last part of the Printer's URI, or it can
   be completely unrelated.  This name can contain characters that are
   not allowed in a conventional URI (see [STD66]).

   Note: For interoperability, values of this attribute (a) SHOULD be
   normalized as recommended in "Unicode Format for Network Interchange"
   [RFC5198]; and (b) SHOULD NOT contain DEL or any C0 or C1 control
   characters.

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4.4.  printer-natural-language-configured

   ( 1.3.18.0.2.4.1119
   NAME 'printer-natural-language-configured'
   DESC 'The configured natural language for LDAP attributes of
         syntax DirectoryString (UTF-8) in this directory entry.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   Also, a possible natural language for IPP protocol string attributes
   set by operator, system administrator, or manufacturer.  Also, the
   (declared) natural language of the printer-name, printer-location,
   printer-info, and printer-make-and-model attributes of this Printer.

   Values of language tags MUST conform to "Tags for Identifying
   Languages" [BCP47].  For example:

      'en-us' (English as spoken in the US)
      'fr-fr' (French as spoken in France)

   Note: For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 63 octets in length.

   Note: For compatibility with IPP/1.1 [RFC2911], language tags in this
   attribute SHOULD be lowercase normalized.

4.5.  printer-location

   ( 1.3.18.0.2.4.1136
   NAME 'printer-location'
   DESC 'The physical location of this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   For example:

      'Room 123A'
      'Second floor of building XYZ'

   Note: For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 127 octets in length.

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   Note: For interoperability and consistent text display, values of
   this attribute (a) SHOULD be normalized as recommended in "Unicode
   Format for Network Interchange" [RFC5198]; (b) SHOULD NOT contain DEL
   or any C0 or C1 control characters except for HT, CR, and LF; and
   (c) SHOULD only contain CR and LF characters together (not as
   singletons).

4.6.  printer-info

   ( 1.3.18.0.2.4.1139
   NAME 'printer-info'
   DESC 'Descriptive information about this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   For example:

      'This Printer can be used for printing color transparencies for
       HR presentations'

      'Out of courtesy for others, please print only small (1-5 page)
       jobs at this Printer'

      'This Printer is going away on July 1, 1997; please find a new
       Printer'

   Note: For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 127 octets in length.

   Note: For interoperability and consistent text display, values of
   this attribute (a) SHOULD be normalized as recommended in "Unicode
   Format for Network Interchange" [RFC5198]; (b) SHOULD NOT contain DEL
   or any C0 or C1 control characters except for HT, CR, and LF; and
   (c) SHOULD only contain CR and LF characters together (not as
   singletons).

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4.7.  printer-more-info

   ( 1.3.18.0.2.4.1134
   NAME 'printer-more-info'
   DESC 'A URI for more information about this specific Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   For example, this could be an HTTP URI referencing an HTML page
   accessible to a Web Browser.  The information obtained from this URI
   is intended for end user consumption.

   See [STD66] for details of URI syntax.

   Note: For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 1023 octets in length.

   Note: LDAP application clients SHOULD NOT attempt to use malformed
   URI values read from this attribute.  LDAP administrative clients
   SHOULD NOT write malformed URI values into this attribute.

   Note: See Sections 1.4.1, 1.4.2, and 1.4.3 for rationale for design
   choices.

4.8.  printer-make-and-model

   ( 1.3.18.0.2.4.1138
   NAME 'printer-make-and-model'
   DESC 'Make and model of this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   Note: For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 127 octets in length.

   Note: The Printer manufacturer MAY initially populate this attribute.

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   Note: For interoperability and consistent text display, values of
   this attribute (a) SHOULD be normalized as recommended in "Unicode
   Format for Network Interchange" [RFC5198]; (b) SHOULD NOT contain DEL
   or any C0 or C1 control characters except for HT, CR, and LF; and
   (c) SHOULD only contain CR and LF characters together (not as
   singletons).

4.9.  printer-ipp-versions-supported

   ( 1.3.18.0.2.4.1133
   NAME 'printer-ipp-versions-supported'
   DESC 'Comma-delimited list of IPP versions supported by
         this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   For example:

      '1.1,2.0'

   Note: Length overflow in values of this attribute MUST be handled by
   multiple instances of this attribute, i.e., individual
   comma-delimited list members MUST NOT be truncated.

   The IPP protocol version(s) MUST include major and minor versions,
   i.e., the exact version numbers for which this Printer implementation
   meets the IPP version-specific conformance requirements as registered
   in the IANA IPP registry [IANAIPP].

   IANA-registered versions of IPP currently are:

      '1.0' (IPP/1.0 [RFC2566], OBSOLETE)
      '1.1' (IPP/1.1 [RFC2911])
      '2.0' (IPP/2.0 [PWG5100.12])
      '2.1' (IPP/2.1 [PWG5100.12])
      '2.2' (IPP/2.2 [PWG5100.12])

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4.10.  printer-multiple-document-jobs-supported

   ( 1.3.18.0.2.4.1132
   NAME 'printer-multiple-document-jobs-supported'
   DESC 'Indicates whether or not this Printer supports more than one
         document per job.'
   EQUALITY booleanMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.7
   SINGLE-VALUE
   )

4.11.  printer-charset-configured

   ( 1.3.18.0.2.4.1109
   NAME 'printer-charset-configured'
   DESC 'The configured charset for IPP protocol values of error
         and status messages generated by this Printer.'
   EQUALITY caseIgnoreMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   Also, a possible charset for IPP protocol string attributes set by
   operator, system administrator, or manufacturer.  For example:

      'utf-8' (ISO 10646/Unicode in UTF-8 transform [STD63])
      'iso-8859-1' (ISO Latin1)

   Values of charset tags SHOULD be defined in the IANA registry of
   Character Sets [IANACHAR] (see also [BCP19]), and the '(preferred
   MIME name)' SHOULD be used as the charset tag in this attribute.

   Note: For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 63 octets in length.

   Note: For compatibility with IPP/1.1 [RFC2911], charset tags in this
   attribute SHOULD be lowercase normalized.

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4.12.  printer-charset-supported

   ( 1.3.18.0.2.4.1131
   NAME 'printer-charset-supported'
   DESC 'One of the charsets supported for IPP protocol values of
         IPP string attributes that correspond to attributes of
         syntax DirectoryString (UTF-8) for this directory entry.'
   EQUALITY caseIgnoreMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   For example:

      'utf-8' (ISO 10646/Unicode in UTF-8 transform [STD63])
      'iso-8859-1' (ISO Latin1)

   Note: Multiple values for this attribute are represented as multiple
   instances of this attribute.

   Values of charset tags SHOULD be defined in the IANA registry of
   Character Sets [IANACHAR] (see also [BCP19]), and the '(preferred
   MIME name)' SHOULD be used as the charset tag in this attribute.

   Note: For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 63 octets in length.

   Note: For compatibility with IPP/1.1 [RFC2911], charset tags in this
   attribute SHOULD be lowercase normalized.

4.13.  printer-generated-natural-language-supported

   ( 1.3.18.0.2.4.1137
   NAME 'printer-generated-natural-language-supported'
   DESC 'One of the natural languages supported for LDAP attributes of
         syntax DirectoryString (UTF-8) in this directory entry.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   Values of language tags SHOULD conform to "Tags for Identifying
   Languages" [BCP47].  For example:

      'en-us' (English as spoken in the US)
      'fr-ca' (French as spoken in Canada)

   Note: Multiple values for this attribute are represented as multiple
   instances of this attribute.

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   Note: For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 63 octets in length.

   Note: For compatibility with IPP/1.1 [RFC2911], language tags in this
   attribute SHOULD be lowercase normalized.

4.14.  printer-document-format-supported

   ( 1.3.18.0.2.4.1130
   NAME 'printer-document-format-supported'
   DESC 'One of the source document formats that can be interpreted
         and printed by this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   Values of document formats SHOULD be MIME media types defined in the
   IANA registry of MIME Media Types [IANAMIME] (see also [BCP13]).

   For example:

      'application/postscript' (Adobe PostScript)
      'text/plain' (plain text)

   Note: Multiple values for this attribute are represented as multiple
   instances of this attribute.

   Note: For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 255 octets in length.

4.15.  printer-color-supported

   ( 1.3.18.0.2.4.1129
   NAME 'printer-color-supported'
   DESC 'Indicates whether or not this Printer is capable of any type of
         color printing at all, including highlight color.'
   EQUALITY booleanMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.7
   SINGLE-VALUE
   )

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4.16.  printer-compression-supported

   ( 1.3.18.0.2.4.1128
   NAME 'printer-compression-supported'
   DESC 'Comma-delimited list of compression algorithms supported by
         this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   For example:

      'none'
      'deflate,gzip'

   Note: Length overflow in values of this attribute MUST be handled by
   multiple instances of this attribute, i.e., individual
   comma-delimited list members MUST NOT be truncated.

   Note: For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 255 octets in length.

   Values defined in IPP/1.1 [RFC2911] and recorded in the IANA IPP
   registry [IANAIPP] include:

      'none' (no compression is used)
      'deflate' (public domain ZIP described in [RFC1951])
      'gzip' (GNU ZIP described in [RFC1952])
      'compress' (UNIX compression described in [RFC1977])

4.17.  printer-pages-per-minute

   ( 1.3.18.0.2.4.1127
   NAME 'printer-pages-per-minute'
   DESC 'The nominal number of pages per minute that can be output by
         this Printer.'
   EQUALITY integerMatch
   ORDERING integerOrderingMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.27
   SINGLE-VALUE
   )

   This attribute is informative, not a service guarantee.  Typically,
   it is the value used in marketing literature to describe this Printer
   -- for example, the value for a simplex or black-and-white print
   mode.

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4.18.  printer-pages-per-minute-color

   ( 1.3.18.0.2.4.1126
   NAME 'printer-pages-per-minute-color'
   DESC 'The nominal number of color pages per minute that can be
         output by this Printer.'
   EQUALITY integerMatch
   ORDERING integerOrderingMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.27
   SINGLE-VALUE
   )

   This attribute is informative, not a service guarantee.  Typically,
   it is the value used in marketing literature to describe this
   Printer.

4.19.  printer-finishings-supported

   ( 1.3.18.0.2.4.1125
   NAME 'printer-finishings-supported'
   DESC 'Comma-delimited list of finishing operations supported by
         this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   For example:

      'staple'
      'staple,punch,bind'

   Note: Length overflow in values of this attribute MUST be handled by
   multiple instances of this attribute, i.e., individual
   comma-delimited list members MUST NOT be truncated.

   Note: For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 255 octets in length.

   Values defined in IPP/1.1 [RFC2911] and recorded in the IANA IPP
   registry [IANAIPP] include:

      'none', 'staple', 'punch', 'cover', 'bind', 'saddle-stitch',
      'edge-stitch', 'staple-top-left', 'staple-bottom-left',
      'staple-top-right', 'staple-bottom-right', 'edge-stitch-left',
      'edge-stitch-top', 'edge-stitch-right', 'edge-stitch-bottom',
      'staple-dual-left', 'staple-dual-top', 'staple-dual-right',
      'staple-dual-bottom'.

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   Note: Implementations MAY support other values.

4.20.  printer-number-up-supported

   ( 1.3.18.0.2.4.1124
   NAME 'printer-number-up-supported'
   DESC 'Maximum number of print-stream pages that can be imposed upon
         a single side of an instance of a selected medium by this
         Printer.'
   EQUALITY integerMatch
   ORDERING integerOrderingMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.27
   SINGLE-VALUE
   )

   For example:

      '1'
      '4'

   Note: Values of this attribute differ from the corresponding IPP
   attribute, in that only the maximum number-up is mapped from the
   corresponding IPP attribute 'number-up-supported' defined in
   [RFC2911].

4.21.  printer-sides-supported

   ( 1.3.18.0.2.4.1123
   NAME 'printer-sides-supported'
   DESC 'Comma-delimited list of impression sides (one or two) and the
         two-sided impression rotations supported by this Printer.'
   EQUALITY caseIgnoreMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   For example:

      'one-sided'
      'one-sided,two-sided-short-edge'

   Note: Length overflow in values of this attribute MUST be handled by
   multiple instances of this attribute, i.e., individual
   comma-delimited list members MUST NOT be truncated.

   Note: For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 255 octets in length.

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   Values defined in IPP/1.1 [RFC2911] and recorded in the IANA IPP
   registry [IANAIPP] are:

      'one-sided'
      'two-sided-long-edge'
      'two-sided-short-edge'

4.22.  printer-media-supported

   ( 1.3.18.0.2.4.1122
   NAME 'printer-media-supported'
   DESC 'One of the names/sizes/types/colors of the media supported by
         this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   Values SHOULD conform to "PWG Media Standardized Names 2.0 (MSN2)"
   [PWG5101.1].

   Note: For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 255 octets in length.

   Values of standardized media size names defined in [PWG5101.1] and
   recorded in the IANA IPP registry [IANAIPP] include:

      'na_letter_8.5x11in'
      'iso_a4_210x297mm'

   Values of standardized media types defined in [PWG5101.1] and
   recorded in the IANA IPP registry [IANAIPP] include:

      'envelope'
      'stationery'

   Values of standardized media colors defined in [PWG5101.1] and
   recorded in the IANA IPP registry [IANAIPP] include:

      'white'
      'blue'

   Note: Multiple values for this attribute are represented as multiple
   instances of this attribute.

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4.23.  printer-media-local-supported

   ( 1.3.18.0.2.4.1117
   NAME 'printer-media-local-supported'
   DESC 'One of the site-specific media supported by this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   Values SHOULD conform to "PWG Media Standardized Names 2.0 (MSN2)"
   [PWG5101.1].

   For example:

      'custom_purchasing-form_8.5x11in' (site-specific name)

   Note: Multiple values for this attribute are represented as multiple
   instances of this attribute.

   Note: For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 255 octets in length.

4.24.  printer-resolution-supported

   ( 1.3.18.0.2.4.1121
   NAME 'printer-resolution-supported'
   DESC 'One of the resolutions supported for printing documents by
         this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   Each resolution value MUST be a string containing three fields:

   1) Cross-feed direction resolution (positive integer);

   2) Feed direction resolution (positive integer);

   3) Unit -- 'dpi' (dots per inch) or 'dpcm' (dots per centimeter).

   Each resolution field MUST be delimited by '>', with optional
   trailing whitespace.  For example:

      '300> 300> dpi>'
      '600> 600> dpi>'

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   Note: See the note in Section 4 about the different field delimiters
   used in the printer-xri-supported and printer-resolution-supported
   attributes ('<' and '>', respectively), chosen for compatibility with
   the IANA-registered SLP 'service:printer:' v2.0 template [SLPPRT20].

   Note: Multiple values for this attribute are represented as multiple
   instances of this attribute.

   Note: This attribute is based on 'printer-resolution-supported'
   defined in IPP/1.1 [RFC2911] with a complex encoding derived from
   'prtMarkerAddressabilityFeedDir', 'prtMarkerAddressabilityXFeedDir',
   and 'prtMarkerAddressabilityUnit' defined in "Printer MIB v2"
   [RFC3805] (which have integer encodings).

   Note: The syntax and delimiter for this attribute are aligned with
   the equivalent attribute in the 'service:printer:' v2.0 template
   [SLPPRT20].  Whitespace is permitted after (but not before) the
   delimiter '>'.

4.25.  printer-print-quality-supported

   ( 1.3.18.0.2.4.1120
   NAME 'printer-print-quality-supported'
   DESC 'Comma-delimited list of print qualities supported
         for printing documents on this Printer.'
   EQUALITY caseIgnoreMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   For example:

      'unknown'
      'draft,normal,high'

   Note: Length overflow in values of this attribute MUST be handled by
   multiple instances of this attribute, i.e., individual
   comma-delimited list members MUST NOT be truncated.

   Values defined in IPP/1.1 [RFC2911] and recorded in the IANA IPP
   registry [IANAIPP] include:

      'draft'
      'normal'
      'high'

   Note: The value 'unknown' MUST only be reported if the corresponding
   IPP attribute is not present, i.e., the value 'unknown' is an
   artifact of this LDAP mapping.

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4.26.  printer-job-priority-supported

   ( 1.3.18.0.2.4.1110
   NAME 'printer-job-priority-supported'
   DESC 'Indicates the number of job priority levels supported by
         this Printer.'
   EQUALITY integerMatch
   ORDERING integerOrderingMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.27
   SINGLE-VALUE
   )

   An IPP/1.1 [RFC2911] conformant Printer, which supports job priority,
   always supports a full range of priorities from '1' to '100' (to
   ensure consistent behavior); therefore, this attribute describes the
   'granularity' of priority supported.  Values of this attribute are
   from '1' to '100'.

4.27.  printer-copies-supported

   ( 1.3.18.0.2.4.1118
   NAME 'printer-copies-supported'
   DESC 'The maximum number of copies of a document that can be printed
         as a single job on this Printer.'
   EQUALITY integerMatch
   ORDERING integerOrderingMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.27
   SINGLE-VALUE
   )

   A positive value indicates the maximum supported copies.  A value of
   '0' indicates no maximum limit.  A value of '-1' indicates 'unknown'.

   Note: The syntax and values for this attribute are aligned with the
   equivalent attribute in the 'service:printer:' v2.0 template
   [SLPPRT20].

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4.28.  printer-job-k-octets-supported

   ( 1.3.18.0.2.4.1111
   NAME 'printer-job-k-octets-supported'
   DESC 'The maximum size of an incoming print job that this Printer
         will accept, in kilobytes (1,024 octets).'
   EQUALITY integerMatch
   ORDERING integerOrderingMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.27
   SINGLE-VALUE
   )

   A positive value indicates the maximum supported job size.  A value
   of '0' indicates no maximum limit.  A value of '-1' indicates
   'unknown'.

   Note: The syntax and values for this attribute are aligned with the
   equivalent attribute in the 'service:printer:' v2.0 template
   [SLPPRT20].

4.29.  printer-current-operator

   ( 1.3.18.0.2.4.1112
   NAME 'printer-current-operator'
   DESC 'The identity of the current human operator responsible for
         operating this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   The value of this attribute SHOULD include information that would
   enable other humans to reach the operator, such as a telephone
   number.

   Note: For interoperability and consistent text display, values of
   this attribute (a) SHOULD be normalized as recommended in "Unicode
   Format for Network Interchange" [RFC5198]; (b) SHOULD NOT contain DEL
   or any C0 or C1 control characters except for HT, CR, and LF; and
   (c) SHOULD only contain CR and LF characters together (not as
   singletons).

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4.30.  printer-service-person

   ( 1.3.18.0.2.4.1113
   NAME 'printer-service-person'
   DESC 'The identity of the current human service person responsible
         for servicing this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   The value of this attribute SHOULD include information that would
   enable other humans to reach the service person, such as a telephone
   number.

   Note: For interoperability and consistent text display, values of
   this attribute (a) SHOULD be normalized as recommended in "Unicode
   Format for Network Interchange" [RFC5198]; (b) SHOULD NOT contain DEL
   or any C0 or C1 control characters except for HT, CR, and LF; and
   (c) SHOULD only contain CR and LF characters together (not as
   singletons).

4.31.  printer-delivery-orientation-supported

   ( 1.3.18.0.2.4.1114
   NAME 'printer-delivery-orientation-supported'
   DESC 'Comma-delimited list of delivery orientations of pages as they
         are printed and ejected supported by this Printer.'
   EQUALITY caseIgnoreMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   For example:

      'unknown'
      'face-up,face-down'

   Values defined in "Printer MIB v2" [RFC3805] for
   prtOutputPageDeliveryOrientation are:

      'face-up'
      'face-down'

   Note: The value 'unknown' MUST only be reported if the corresponding
   Printer MIB attribute is not present, i.e., the value 'unknown' is an
   artifact of this LDAP mapping.

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   Note: The syntax and values for this attribute are aligned with the
   equivalent attribute in the 'service:printer:' v2.0 template
   [SLPPRT20].

4.32.  printer-stacking-order-supported

   ( 1.3.18.0.2.4.1115
   NAME 'printer-stacking-order-supported'
   DESC 'Comma-delimited list of stacking orders of pages as they are
         printed and ejected supported by this Printer.'
   EQUALITY caseIgnoreMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   For example:

      'unknown'
      'first-to-last'
      'first-to-last,last-to-first'

   Values defined in "Printer MIB v2" [RFC3805] for
   prtOutputStackingOrder are:

      'first-to-last'
      'last-to-first'

   Note: The value 'unknown' MUST only be reported if the corresponding
   Printer MIB attribute is not present, i.e., the value 'unknown' is an
   artifact of this LDAP mapping.

   Note: The syntax and values for this attribute are aligned with the
   equivalent attribute in the 'service:printer:' v2.0 template
   [SLPPRT20].

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4.33.  printer-output-features-supported

   ( 1.3.18.0.2.4.1116
   NAME 'printer-output-features-supported'
   DESC 'Comma-delimited list of output features supported by
         this Printer.'
   EQUALITY caseIgnoreMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   For example:

      'unknown'
      'bursting,decollating'
      'offset-stacking'

   Note: Length overflow in values of this attribute MUST be handled by
   multiple instances of this attribute, i.e., individual
   comma-delimited list members MUST NOT be truncated.

   Values defined in "Printer MIB v2" [RFC3805] for prtOutputBursting,
   prtOutputDecollating, prtOutputPageCollated, and
   prtOutputOffsetStacking are:

      'bursting'
      'decollating'
      'page-collating'
      'offset-stacking'

   Note: The value 'unknown' MUST only be reported if the corresponding
   Printer MIB attributes are not present, i.e., the value 'unknown' is
   an artifact of this LDAP mapping.

   Note: The syntax and values for this attribute are aligned with the
   equivalent attribute in the 'service:printer:' v2.0 template
   [SLPPRT20].

   Note: Implementations MAY support other values.

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4.34.  printer-aliases

   ( 1.3.18.0.2.4.1108
   NAME 'printer-aliases'
   DESC 'One of the site-specific administrative names of this Printer
         in addition to the value specified for printer-name.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   Values of this attribute SHOULD be specified in the language
   specified in printer-natural-language-configured (for example, to
   support text-to-speech conversions), although the Printer's alias MAY
   be specified in any language.

   Note: Multiple values for this attribute are represented as multiple
   instances of this attribute.

   Note: For compatibility with IPP/1.1 [RFC2911], values of this
   attribute SHOULD NOT exceed 255 octets in length.

   Note: For interoperability, values of this attribute (a) SHOULD be
   normalized as recommended in "Unicode Format for Network Interchange"
   [RFC5198]; and (b) SHOULD NOT contain DEL or any C0 or C1 control
   characters.

4.35.  printer-device-id

   ( 1.3.18.0.2.24.46.1.101
   NAME 'printer-device-id'
   DESC 'The IEEE 1284 Device ID for this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   Values of this attribute SHOULD conform to "PWG Command Set Format
   for IEEE 1284 Device ID v1.0" [PWG5107.2].

   Note: For compatibility with [PWG5100.14] and [PWG5107.2], values of
   this attribute SHOULD NOT exceed 1023 octets in length.

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4.36.  printer-device-service-count

   ( 1.3.18.0.2.24.46.1.102
   NAME 'printer-device-service-count'
   DESC 'The number of Printer (print service) instances configured on
         this Imaging Device (host system).'
   EQUALITY integerMatch
   ORDERING integerOrderingMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.27
   SINGLE-VALUE
   )

   A positive value indicates the number of Printer (print service)
   instances.  A value of '-1' indicates 'unknown'.  A value of '0' is
   not meaningful (because this attribute must be reported by some
   Printer instance).

   Note: The syntax and values for this attribute are aligned with the
   equivalent 'device-service-count' attribute defined in [PWG5100.13].

4.37.  printer-uuid

   ( 1.3.18.0.2.24.46.1.104
   NAME 'printer-uuid'
   DESC 'A URN specifying the UUID of this Printer (print service)
         instance on this Imaging Device (host system).'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   For example:

      'urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf6'

   Values of this attribute MUST conform to the Universally Unique
   Identifier (UUID) URN namespace [RFC4122].

   Note: For compatibility with [PWG5100.13] and [RFC4122], values of
   this attribute SHOULD NOT exceed 45 octets in length.

   Note: LDAP application clients SHOULD NOT attempt to use malformed
   URN values read from this attribute.  LDAP administrative clients
   SHOULD NOT write malformed URN values into this attribute.

   Note: The syntax and values for this attribute are aligned with the
   equivalent 'printer-uuid' attribute defined in [PWG5100.13].

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4.38.  printer-charge-info

   ( 1.3.18.0.2.24.46.1.105
   NAME 'printer-charge-info'
   DESC 'Descriptive information about paid printing services for this
         Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   For example:

      'This Printer can be used for paid printing at 2 cents/page.'

   Note: For compatibility with [PWG5100.13], values of this attribute
   SHOULD NOT exceed 1023 octets in length.

   Note: For interoperability and consistent text display, values of
   this attribute (a) SHOULD be normalized as recommended in "Unicode
   Format for Network Interchange" [RFC5198]; (b) SHOULD NOT contain any
   C0 or C1 control characters except for HT, CR, and LF; and (c) SHOULD
   only contain CR and LF characters together (not as singletons).

   Note: The syntax and values for this attribute are aligned with the
   equivalent 'printer-charge-info' attribute defined in [PWG5100.13].

4.39.  printer-charge-info-uri

   ( 1.3.18.0.2.24.46.1.106
   NAME 'printer-charge-info-uri'
   DESC 'A URI for a human-readable Web page for paid printing services
         for this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   For example:

      'http://example.com/charges'

   See [STD66] for details of URI syntax.

   Note: For compatibility with IPP/1.1 [RFC2911] and [PWG5100.13],
   values of this attribute SHOULD NOT exceed 1023 octets in length.

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   Note: LDAP application clients SHOULD NOT attempt to use malformed
   URI values read from this attribute.  LDAP administrative clients
   SHOULD NOT write malformed URI values into this attribute.

   Note: The syntax and values for this attribute are aligned with the
   equivalent 'printer-charge-info-uri' attribute defined in
   [PWG5100.13].

4.40.  printer-geo-location

   ( 1.3.18.0.2.24.46.1.107
   NAME 'printer-geo-location'
   DESC 'A geo: URI specifying the geographic location of this Printer.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   SINGLE-VALUE
   )

   For example:

      'geo:13.4125,103.8667'

   Values of this attribute MUST conform to the 'geo' URI scheme
   [RFC5870].

   Note: For compatibility with IPP/1.1 [RFC2911] and [PWG5100.13],
   values of this attribute SHOULD NOT exceed 1023 octets in length.

   Note: LDAP application clients SHOULD NOT attempt to use malformed
   URI values read from this attribute.  LDAP administrative clients
   SHOULD NOT write malformed URI values into this attribute.

   Note: The syntax and values for this attribute are aligned with the
   equivalent 'printer-geo-location' attribute defined in [PWG5100.13].

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4.41.  printer-ipp-features-supported

   ( 1.3.18.0.2.24.46.1.108
   NAME 'printer-ipp-features-supported'
   DESC 'Comma-delimited list of IPP protocol features that
         this Printer supports.'
   EQUALITY caseIgnoreMatch
   SUBSTR caseIgnoreSubstringsMatch
   SYNTAX  1.3.6.1.4.1.1466.115.121.1.15
   )

   For example:

      'none'
      'unknown'
      'proof-print'
      'ipp-everywhere,proof-print,job-save'

   Note: Length overflow in values of this attribute MUST be handled by
   multiple instances of this attribute, i.e., individual
   comma-delimited list members MUST NOT be truncated.

   Values of this attribute SHOULD specify only IANA-registered keywords
   for the 'ipp-features-supported' attribute defined in [PWG5100.13] or
   other Standards Track IETF or IEEE-ISTO PWG specifications if this
   Printer implementation meets all of the IPP feature-specific
   conformance requirements.

   IANA-registered values include:

      'none' (No extension features are supported)
      'document-object' (Document object defined in [PWG5100.5])
      'job-save' (Job save defined in [PWG5100.11])
      'ipp-everywhere' ("IPP Everywhere" defined in [PWG5100.14])
      'page-overrides' (Page overrides defined in [PWG5100.6])
      'proof-print' (Proof print defined in [PWG5100.11])
      'subscription-object' (Subscription object defined in [RFC3995])

   Note: The value 'unknown' MUST only be reported if the corresponding
   IPP Printer attribute is not present, i.e., the value 'unknown' is an
   artifact of this LDAP mapping.

   Note: The syntax and values for this attribute are aligned with the
   equivalent 'ipp-features-supported' attribute defined in
   [PWG5100.13].


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