856 - Electronic Location and Access (R)
MARC 21 Community Information - Concise
2007
Contains the information needed to locate and access electronic information pertaining
to a community service such as the service or event website or related resources.
Subfields $y (Link text) and $z (Public note) may be used to
specify the type of electronic information.
Field 856 is repeated when the location data elements vary (the URL in subfield
$u or subfields $a, $b, $d when used). It is
also repeated whenever the electronic filename varies (subfield $f), except
when a single intellectual item is divided into different parts for online storage or
retrieval.
See the Guidelines for the Use of Field
856 for a more thorough discussion on the use of field 856.
Indicators
First - Access method
# - No information provided
0 - Email
1 - FTP
2 - Remote login (Telnet)
3 - Dial-up
4 - HTTP
7 - Method specified in subfield $2
Second - Relationship
# - No information provided
0 - Resource
1 - Version of resource
2 - Related resource
8 - No display constant generated
Subfield Codes
$a - Host name (R)
Fully qualified domain (host name) of the electronic location. It contains a
network address which is repeated if there is more than one address for the same
host.
$b - Access number (R)
Access number associated with a host. It can contain the Internet Protocol (IP)
numeric address if the item is an Internet resource, or a telephone number if
dial-up access is provided through a telephone line. This data may change
frequently and may be generated by the system, rather than statically stored.
$c - Compression information (R)
Information about the compression of a file; in particular, whether a specific
program is required to decompress the file.
$d - Path (R)
$f - Electronic name (R)
$h - Processor of request (NR)
Username, or processor of the request; generally the data which precedes the
at sign (@) in the host address.
$i - Instruction (R)
Instruction or command needed for the remote host to process a request.
$j - Bits per second (NR)
$k - Password (NR)
$l - Logon (NR)
Characters needed to connect (i.e, logon, login, etc.) to an
electronic resource or FTP site. This subfield is used to record general-use logon
strings which do not require special security.
$m - Contact for access assistance (R)
$n - Name of location of host (NR)
Conventional name of the location of the host in subfield $a, including
its physical (geographic) location.
$o - Operating system (NR)
$p - Port (NR)
Portion of the address that identifies a process or service in the host.
$q - Electronic format type (NR)
Identification of the electronic format type, which is the data representation of
the resource, such as text/html, ASCII, Postscript file, executable application,
or JPEG image. Electronic format type may be taken from enumerated lists such as
registered Internet Media Types (MIME types).
$r - Settings (NR)
$s - File size (R)
$t - Terminal emulation (R)
$u - Uniform Resource Identifier (R)
Uniform Resource Identifier (URI), which provides electronic access data in a
standard syntax. Field 856 is structured to allow for the creation of a URL from
the concatenation of other separate field 856 subfields. Subfield $u
may be used instead of those separate subfields or in addition to them. Subfield
$u may be repeated only if both a URN and a URL or more than one URN
are recorded.
$v - Hours access method available (R)
$w - Record control number (R)
$x - Nonpublic note (R)
$y - Link text (R)
$z - Public note (R)
$3 - Materials specified (NR)
$8 - Field link and sequence number (R)
Examples
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2#$aanthrax.micro.umn.edu$b128.101.95.23 |
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| 856 |
1#$amaine.maine.edu$cMust be decompressed with PKUNZIP$fresource.zip$s16874 bytes
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1#$awuarchive.wustl.edu$dmirrors/info-mac/util$fcolor-system-icons.hqx
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| 856 |
0#$akentvm.bitnet$facadlist file1$facadlist file2$facadlist file3
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1#$aharvarda.harvard.edu$kguest
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1#$aunmvm.bitnet$lanonymous
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2#$agopac.berkeley.edu$mRoy Tennant
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3#$b1-202-7072316$j2400-9600$nLibrary of Congress, Washington, DC$oUNIX$rE-7-1$tvt100$zRequires logon and password
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0#$akeptvm.bitnet$facadlist file1$s34,989 bytes$facadlist file2$s32,876 bytes$facadlist file3$s23987 bytes
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| 856 |
2#$amaine.maine.edu$nUniversity of Maine$t3270
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3#$alocis.loc.gov$b140.147.254.3$mlconline@loc.gov$t3270$tline mode (e.g., vt100)$vM-F 6:00 a.m.-21:30 p.m. USA EST, Sat. 8:30-17:00 USA
EST, Sun. 13:00-17:00 USA EST
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1#$awuarchive.wustl.edu$cdecompress with PKUNZIP.exe$d/mirrors2/win3/games$fatmoids.zip$xcannot verify because of transfer
difficulty
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| 856 |
42$3Finding aid$uhttp://lcweb2.loc.gov/ammem/ead/jackson.sgm
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