Ubuntu Manpage: dahdi_span_types - set line modes of DAHDI spans before assignment

NAME

       dahdi_span_types - set line modes of DAHDI spans before assignment

SYNOPSIS

       dahdi_span_types [options] <list|dumpconfig|compare|set> [devpath ...]

DESCRIPTION

       The  span  type (the line mode: E1/T1/J1) must be set to a span before DAHDI assigns it a span number, as
       E1 spans use more channels.  dahdi_span_types applies the span type configuration to an un-assigned span.

       Using it only makes sense when the kernel module parameter  dahdi.auto_assign_span  is  unset,  otherwise
       DAHDI automatically assign span numbers during device registration.

       dahdi_span_types  takes  a command and an optional list of devices. If no device is given, the command is
       applied to all devices.

       The device is marked as a path in the SysFS tree.

OPTIONS

       -h|--help
              Output usage message and exit

       -n|--dry-run
              During "set" operation, only show what would be done, without actually changing anything.

       -v|--verbose
              During "set" operation, show the actions that are being performed.

       --line-mode=<E1|T1|J1>
              During "dumpconfig" operation, force special generation mode:

              •  First, generates a "wildcard" entry with the fiven line-mode.

              •  Comment out all span entries. Each of  them  may  be  manually  un-commented  to  override  the
                 "wildcard".

SUB-COMMANDS

       set
              Reads  settings  from  span-types.conf  and applies them to the device(s) specified in the command
              line (or all devices, if none specified).

       compare
              Compare the settings on the system to those in the configuration file.  For each line that applies
              to  a  device  on  the  system, print it if the value to be set and the active value on the system
              differ.

              The exit status is 0 if there is no difference and non-zero if a difference was detected.

       list
              List line modes for all spans in the system which  may  be  set  with  dahdi_span_types  (E1/T1/J1
              spans).

       dumpconfig
              List  types  for  the  spans in a format fit to be used in span-types.conf. Use this to generate a
              configuration file after you have (perhaps manually) set all existing spans.

              dahdi_genconf spantypes uses this command internally.

CONFIGURATION

General structure
span-types.conf is a file with lines specifying line modes 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 the line modes of 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 command set is used) to the following values:

hwid
@location
devpath

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 not
in "a-zA-Z0-9/:.-" is replaced by "_".

Note that while span-types.conf allows an arbitrarily-complex combination of E1, J1 and T1 ports, it
would normally have just a single wildcard line setting the line mode (the first line in the example
below).

Span Specification
Each line should have one or more span specifications: this is the value used to set span type with DAHDI
in the SysFS interface. A specification has two colon-separated fields:

rel_span_no:span_type

for instance, the following are four span specifications specify ports 1 and 2 as E1 and ports 3 and 4 as
T1: [12]:E1 [34]:T1 .

rel_span_no
The relative number of the span in the device. E.g.: port number. This field may contain shell
wildcards (*, ? and [])

span_type
E1/T1/J1

Multiple matches
During set operation, the dahdi_span_types applies all matching settings to a span. This is done in the
order of lines in the configuration files.

Thus, if there are multiple matches to a span -- the last match will win (all will be applied to the
kernel in order. The last one in the file will be applied last).

Example:
* *:T1 # All spans on all devices will be T1
usb:X1234567 [34]:E1 # Except spans 3,4 on the device which will be E1

ENVIRONMENT

       DAHDICONFDIR
              The directory in which span-types.conf resides. /etc/dahdi if not overridden from the environment.

       DAHDISPANTYPESCONF
              The path to  span-types.conf  resides.  /etc/dahdi/span-types.conf  if  not  overridden  from  the
              environment.

FILES

       /etc/dahdi/span-types.conf
              The default location for the configuration file.

       /sys/bus/dahdi_devices/devices/device
              SysFS node for the device. In this directory reside the following files, among others:

              spantype
                     read/write  file.  Reading  from  it returns current configuration for spans of the device.
                     Span-specifications can be written to it to change line modes (but only for a span that  is
                     not assigned yet).

AUTHOR

       dahdi_span_types 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 Foundation.

                                                   23 Jan 2014                               DAHDI_SPAN_TYPES(8)