termscu(1)                        OFFIS DCMTK                       termscu(1)

NAME
       termscu - DICOM termination SCU


SYNOPSIS
       termscu [options] peer port

DESCRIPTION
       The  termscu  application  implements  a  Service  Class User (SCU) for
       DCMTK's private Shutdown SOP Class. It tries to negotiate this  private
       Shutdown  SOP  Class with a Service Class Provider (SCP) which (if this
       feature is implemented) will immediately shutdown  after  refusing  the
       association.  The  application  can be used to shutdown some of DCMTK's
       server applications.

PARAMETERS
       peer  hostname of DICOM peer

       port  tcp/ip port number of peer

OPTIONS
   general options
         -h    --help
                 print this help text and exit

               --version
                 print version information and exit

               --arguments
                 print expanded command line arguments

         -q    --quiet
                 quiet mode, print no warnings and errors

         -v    --verbose
                 verbose mode, print processing details

         -d    --debug
                 debug mode, print debug information

         -ll   --log-level  [l]evel: string constant
                 (fatal, error, warn, info, debug, trace)
                 use level l for the logger

         -lc   --log-config  [f]ilename: string
                 use config file f for the logger

   network options
       IP protocol version:

         -i4   --ipv4
                 use IPv4 only (default)

         -i6   --ipv6
                 use IPv6 only

         -i0   --ip-auto
                 use DNS lookup to determine IP protocol

       application entity titles:

         -aet  --aetitle  [a]etitle: string
                 set my calling AE title (default: ECHOSCU)

         -aec  --call  [a]etitle: string
                 set called AE title of peer (default: ANY-SCP)

       other network options:

         -pdu  --max-pdu  [n]umber of bytes: integer (4096..131072)
                 set max receive pdu to n bytes (default: 16384)

NOTES
   DICOM Conformance
       The termscu application supports the following SOP Classes as an SCU:

       PrivateShutdownSOPClass  1.2.276.0.7230010.3.4.1915765545.18030.917282194.0

LOGGING
       The level of logging output of  the  various  command  line  tools  and
       underlying  libraries  can  be  specified by the user. By default, only
       errors and warnings are written to the  standard  error  stream.  Using
       option  --verbose  also  informational messages like processing details
       are reported. Option --debug can be used to get  more  details  on  the
       internal  activity,  e.g.  for debugging purposes. Other logging levels
       can be selected using option --log-level. In --quiet  mode  only  fatal
       errors  are reported. In such very severe error events, the application
       will usually terminate. For  more  details  on  the  different  logging
       levels, see documentation of module 'oflog'.

       In  case  the logging output should be written to file (optionally with
       logfile rotation), to syslog (Unix) or the event log  (Windows)  option
       --log-config  can  be  used.  This  configuration  file also allows for
       directing only certain messages to a particular output stream  and  for
       filtering  certain  messages  based  on the module or application where
       they are generated.  An  example  configuration  file  is  provided  in
       <etcdir>/logger.cfg.

COMMAND LINE
       All  command  line  tools  use  the  following notation for parameters:
       square brackets enclose optional  values  (0-1),  three  trailing  dots
       indicate  that multiple values are allowed (1-n), a combination of both
       means 0 to n values.

       Command line options are distinguished from parameters by a leading '+'
       or '-' sign, respectively. Usually, order and position of command  line
       options  are  arbitrary  (i.e.  they  can appear anywhere). However, if
       options are mutually exclusive the rightmost appearance is  used.  This
       behavior  conforms  to  the  standard  evaluation  rules of common Unix
       shells.

       In addition, one or more command files can be specified  using  an  '@'
       sign  as  a  prefix to the filename (e.g. @command.txt). Such a command
       argument is replaced by the content  of  the  corresponding  text  file
       (multiple  whitespaces  are  treated  as a single separator unless they
       appear between two quotation marks) prior to  any  further  evaluation.
       Please  note  that  a command file cannot contain another command file.
       This simple but effective  approach  allows  one  to  summarize  common
       combinations  of  options/parameters  and  avoids longish and confusing
       command lines (an example is provided in file <datadir>/dumppat.txt).

ENVIRONMENT
       The termscu utility  will  attempt  to  load  DICOM  data  dictionaries
       specified  in the DCMDICTPATH environment variable. By default, i.e. if
       the  DCMDICTPATH  environment   variable   is   not   set,   the   file
       <datadir>/dicom.dic  will be loaded unless the dictionary is built into
       the application (default for Windows).

       The  default  behavior  should  be  preferred   and   the   DCMDICTPATH
       environment  variable  only used when alternative data dictionaries are
       required. The DCMDICTPATH environment variable has the same  format  as
       the  Unix  shell PATH variable in that a colon (':') separates entries.
       On Windows systems, a semicolon (';') is used as a separator. The  data
       dictionary  code  will  attempt  to  load  each  file  specified in the
       DCMDICTPATH environment variable. It is an error if no data  dictionary
       can be loaded.

COPYRIGHT
       Copyright  (C)  2005-2025  by OFFIS e.V., Escherweg 2, 26121 Oldenburg,
       Germany.

Version 3.7.0                   Mon Dec 15 2025                     termscu(1)
