---
name: "dahdi_cfg"
section: "8"
platform: "linux"
package: "dahdi"
version: "1:3.1.0-2.1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/dahdi_cfg"
---

# dahdi\_cfg(8)

configures DAHDI kernel modules from /etc/dahdi/system.conf

## NAME

dahdi\_cfg - configures DAHDI kernel modules from /etc/dahdi/system.conf

## SYNOPSIS

**dahdi\_cfg \[-c *CFG\_FILE*\] \[-S*NUM* \[-S*CHANS*\]\] \[-s\] \[-f\] \[-t\] \[-v \[-v ... \] \]**

**dahdi\_cfg -h**

## DESCRIPTION

**dahdi\_cfg** configures DAHDI interface cards from a config file.

You generally  need to run it with a valid configurations in order for DAHDI modules to work properly.

It must be run to configure every DAHDI span. Normally it is run from the DAHDI init script.

## OPTIONS

- **-c *CFG\_FILE***

  Use an alternative configuration file instead of */etc/dahdi/system.conf*

  If *CFG\_FILE* is '**-**', it is read from stdin.

- **-C *CHANNELS***

  Only apply changes to channels in the specified range. Only applicable when -S is in use.

- **-s**

  Only shutdown spans.

- **-S *SPAN***

  Only apply changes to span no. *SPAN*. You also need to specify the range of channels in the span explicitly with -C.

- **-f**

  Always configure every channel, even if it appears not to have changed.

- **-t**

  Test mode. Don't do anything, just report what you wanted to do.

- **-v**

  Be more verbose. Add extra v-s for extra verbosity.

- **-h**

  Display a brief help message.

## FILES

*/etc/dahdi/system.conf*

The default location for the configuration file.

## SEE ALSO

[dahdi\_tool(8)](/dahdi_tool/8.md), [dahdi\_monitor(8)](/dahdi_monitor/8.md), [asterisk(8)](/asterisk/8.md).

## AUTHOR

This manual page was written by Santiago Ruano Rincón  \<santiago@unicauca.edu.co\> for the Debian system (but may be used by others).  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.