dahdi_span_types [options] <list|dumpconfig|set> [devpath ...]
DESCRIPTIONThe 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.
- Output usage message and exit
- During "set" operation, only show what would be done, without actually changing anything.
- During "set" operation, show the actions that are being performed.
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".
- Reads settings from span-types.conf and applies them to the device(s) specified in the command line (or all devices, if none specified).
- List line modes for all spans in the system which may be set with dahdi_span_types (E1/T1/J1 spans).
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.
General structurespan-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 IdentifierA 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:
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).
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:
for instance, the following are four span specifications specify ports 1 and 2 as E1 and ports 3 and 4 as T1: :E1 :T1 .
- The relative number of the span in the device. E.g.: port number. This field may contain shell wildcards (*, ? and )
Multiple matchesDuring 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 :E1 # Except spans 3,4 on the device which will be E1
- The directory in which span-types.conf resides. /etc/dahdi if not overridden from the environment.
- The path to span-types.conf resides. /etc/dahdi/span-types.conf 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:
- 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).
AUTHORdahdi_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.