Provided by: dahdi_2.10.2-2ubuntu1_i386 bug


       dahdi_span_assignments - handle DAHDI spans assignments


       dahdi_span_assignments  [-v|--verbose] [-n|--dry-run] <add|remove|auto>

       dahdi_span_assignments [-v|--verbose] list [devpath...]

       dahdi_span_assignments [-v|--verbose] [-k|--key key] dumpconfig

       dahdi_span_assignments -h|--help


       Channels in DAHDI devices (such as  DAHDI  PCI  cards)  are  groups  to
       logical  units called "spans" (for example: a port in a digital card is
       a span).  When the kernel module  parameter  dahdi.auto_assign_span  is
       unset,  DAHDI  devices that register with DAHDI don't cause their spans
       to be automatically assigned.

       This allows user-space to order DAHDI to assign them to  specific  span
       and channel numbers. That way, specific spans on specific DAHDI devices
       may be assigned with specific span and channel  numbers  regardless  of
       the  registration  order of the hardware (or if all hardware is present
       at all).

       dahdi_span_assignments is  used  to  assign  those  spans  or  to  help
       creating   the   configuration   file   used   in   their   assignment:
       /etc/dahdi/assigned-spans.conf .


       There are several sub-commands.

       All sub-commands take an optional list  of  paths  to  SysFS  nodes  of
       devices.  If  given,  the  command  will  only  operate  on those DAHDI
       devices. The default is to operate on all devices (which would normally
       be the sane case when running from the command-line).

       add [devpath ...]
              Applies  to  all devices or to those listed on the command line.
              Parameters are paths (in SysFS) to DAHDI devices with unassigned

              The   command   will   assign  spans  with  DAHDI  according  to
              configuration in assigned-spans.conf.

              If no line matches the span, or if the assignment for  it  fails
              (it is not available) it will remain unassigned.

              If  any  of the span settings fails (the span number or range of
              channels is already in use), the program will print  a  message,
              but  continue applying the others. In such a case you should fix
              assigned-spans.conf and re-run add (or run auto  to  give  those
              channels  the first available range and regenerate the file with
              'dahdi_genconf assignedspans').

       remove [devpath ...]
              Applies to all devices or to those listed on the  command  line.
              Parameters  are  paths (in SysFS) to DAHDI devices with assigned

              The command will un-assign them.

       auto [devpath ...]
              Applies to all devices or to those listed on the  command  line.
              Parameters are paths (in SysFS) to DAHDI devices with unassigned

              Each span is assigned to first available span number and channel
              numbers, as if dahdi.auto_assign_span was set. The configuration
              file doesn't affect these assignments.

              List all spans in the system.

              List all assigned spans in the system in a format fit to be used
              in  assigned-spans.conf.  Use  this  to generate a configuration
              file after you have (automatically  or  manually)  assigned  all
              existing spans.

              dahdi_genconf assignedspans uses this command internally.


       -v --verbose
              Verbose output.

       -n --dry-run
              Don't  assign  / un-assign spans. Only print commands used to do

       -k key
              For dumpconfig - The key by which to identify  the  hardware  in
              the generated configuration. Legal values:

                     Hardware   identifier   (e.g.:  software-readable  serial
                     number). This is the default. If the device has no  hwid,
                     devpath is used.

                     The  location  field  (file)  in  the  SysFS  device node
                     (directory)  for  the  DAHDI  device.  If  not  available
                     (typically: DAHDI version <= 2.7.x), devpath is used.

                     Path in SysFS to the device node.


       /etc/dahdi/assigned-spans.conf   is   a   file  with  lines  specifying
       assignment of spans.

       Empty lines or lines beginning with '#' are ignored.

       Each line is in the format of:

       ID        spanspec ...

       The ID field specifies the DAHDI device and the spanspecs define how to
       assign  its  spans. A line may have multiple spanspecs in a single line
       (though dumpconfig generates a configuration with one per line).

   Span Identifier
       A DAHDI device may be specified either  by  a  hardware  identifier  (a
       software  readable  serial number or whatever) or the location in which
       it is installed on the system. The former makes it  simpler  to  change
       connector / slot whereas the latter makes it simpler to replace a unit.

       The  value  in this field is matched (when the commands add and remove)
       are used) to the following values:


       See  above  for  their  descriptions.  The  value  may  include   shell
       wildcards:  *,  ? and [], which are used in the match. The values to be
       matched are first  cleaned  up:  '!'  is  replaced  with  '/'  and  any
       character beyond "a-zA-Z0-9/:.-" is removed.

   Span Specification
       Each  line  should  have  one  or more span specifications: this is the
       value used to assign a span  with  DAHDI  in  the  SysFS  interface.  A
       specification has three colon-separated numbers:


       for  instance, the following are four span specifications for a quad-E1
       device: 1:6:53 2:7:84 3:8:115 4:9:146 occupying spans 6-9 and  channels

              The  relative  number  of  the  span  in  the device. E.g.: port

              The desired DAHDI span number. Must be available.

              The desired DAHDI channel number for the first DAHDI channel  in
              the  span.   All channels of the span will be assigned following
              it and hence that space must be available.


              The directory in which assigned-spans.conf  resides.  /etc/dahdi
              if not overridden from the environment.

              The       path       to       assigned-spans.conf       resides.
              /etc/dahdi/assigned-spans.conf  if  not  overridden   from   the

              The  default value for -k . Defaults to "hwid" if not overridden
              from the environment.


              The default location for the configuration file.

              SysFS  node  for  the  device.  In  this  directory  reside  the
              following files, among others:

                     The value of the device's location field.

              assign_span, unassign_span, auto_assign
                     Write  only files for the operations. Used by add, remove
                     and auto, respectively.


       dahdi_span_types(8), dahdi_genconf(8), dahdi_cfg(8)


       dahdi_span_assignments was written by Oron Peled.  This manual page was
       written  by  Tzafrir  Cohen.  Permission is granted to copy, distribute
       and/or modify this document under the terms of the GNU  General  Public
       License,  Version  2  any  later version published by the Free Software

                                  23 Jan 2014        DAHDI_SPAN_ASSIGNMENTS(8)