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Created initial page with information provided by W9CR's wiki at https://wiki.w9cr.net/index.php/Dahdi_dummy
=DAHDI Dummy=
Or how to fix my ASL node from stuttering when I use it.
<sup>Credit: Information taken from W9CR's wiki <ref>W9CR's Wiki - Dahdi dummy[https://wiki.w9cr.net/index.php/Dahdi_dummy]</ref></sup>
== Compiling ==
=== Raspberry PI ASL 1.01 systems ===
For ASL 1.01 systems [https://wiki.allstarlink.org/wiki/Main_Page#Downloads ASL 1.01 system].
# ensure your system is up and going, with the kernel pinned per the [http://dvswitch.org/files/ASL_Images/Raspberry_Pi/Stretch/ASL_1.01-20180228-armhf-raspbian-stretch-image.readme readme]
# apt-mark hold raspberrypi-kernel-headers raspberrypi-kernel
Now run the following commands:
# apt-get install gcc raspberrypi-kernel-headers make vim git
# vim /usr/src/asl-dahdi-linux-2.11.1/linux/drivers/dahdi/Kbuild remove the # from the dummy file
# cd /usr/src/asl-dahdi-linux-2.11.1
# make
# make install
# echo -e "#needed for rpi timing \ndahdi_dummy" >>/etc/modules # add it to modules.conf
# modprobe dahdi_dummy
# service restart asterisk
=== Others ===
To build as root:
# cd /usr/src/asl-dahdi-linux-2.11.1/linux
# export MODULES_EXTRA='dahdi_dummy'
# make
=== Loading module ===
Now you need to load the module into the Linux kernel for use.
# insmod /usr/src/asl-dahdi-linux-2.11.1/linux/drivers/dahdi/dahdi_dummy.ko
Verify the module is loaded along with other DAHDI dependencies
# lsmod |grep dahdi
dahdi_dummy 3432 0
dahdi 229561 35 dahdi_dummy
crc_ccitt 1771 1 dahdi
== Configuring DAHDI ==
You will need to do dahdi_genconf and then dahdi_cfg. ASL1.01 is missing this in the service script that starts asterisk. It needs to be added.
Restart asterisk
# service asterisk restart
Run dahdi_scan to view results:
# dahdi_scan
[1]
active=yes
alarms=UNCONFIGURED
description=DAHDI_DUMMY/1 (source: HRtimer) 1
name=DAHDI_DUMMY/1
manufacturer=
devicetype=DAHDI Dummy Timing
location=
basechan=1
totchans=0
irq=0
=== Verification ===
StPeteRpt*CLI> dahdi show status
Description Alarms IRQ bpviol CRC4
DAHDI_DUMMY/1 (source: HRtimer) 1 UNCONFIGUR 0 0 0
== Testing ==
* Before DAHDI dummy module is installed
<pre>
bryan@StPeteRpt:~ $ sudo dahdi_test
[sudo] password for bryan:
Opened pseudo dahdi interface, measuring accuracy...
99.614% 99.594% 99.608% 99.608% 98.476% 99.638% 99.599% 99.601%
99.600% 98.450% 99.602% 99.600% 99.601% 99.600% 98.445% 99.581%
99.621% 99.605% 99.597% 98.478% 99.630% 99.579% 99.626% 99.601%
98.478% 99.630% 99.602% 99.600% 99.601% 98.446% 99.601% 99.580% ^C
--- Results after 32 passes ---
Best: 99.638% -- Worst: 98.445% -- Average: 99.390271%
Cumulative Accuracy (not per pass): 99.967
</pre>
* After insmod of DAHDI dummy module.
<pre>
bryan@StPeteRpt:~ $ sudo dahdi_test
Opened pseudo dahdi interface, measuring accuracy...
99.990% 99.967% 99.991% 99.992% 99.991% 99.992% 99.991% 99.991%
99.991% 99.988% 99.992% 99.991% 99.991% 99.992% 99.991% 99.991%
99.991% 99.990% 99.992% 99.991% 99.991% 99.991% 99.991% 99.991%
99.992% 99.991% 99.991% 99.992% 99.991% 99.991% 99.991% 99.991%
99.991% 99.990% 99.991% 99.992% 99.991% 99.991% 99.991% 99.991% ^C
--- Results after 40 passes ---
Best: 99.992% -- Worst: 99.967% -- Average: 99.990443%
Cumulative Accuracy (not per pass): 99.990
</pre>
* Here it is on an intel server running a pci_radio card:
<pre>
root@Itchy:/home/bryan# dahdi_test
Opened pseudo dahdi interface, measuring accuracy...
99.993% 99.986% 99.995% 99.992% 99.984% 99.971% 99.993% 99.990%
99.992% 99.992% 99.991% 99.990% 99.996% 99.990% 99.971% 99.954%
99.994% 99.992% 99.991% 99.995% 99.983% 99.993% 99.992% 99.992%
99.997% 99.990% 99.985% 99.995% 99.990% 99.996% 99.989% 99.993%
99.993% 99.989% 99.997% 99.989% 99.994% 99.996% 99.988% 99.993% ^C
--- Results after 40 passes ---
Best: 99.997% -- Worst: 99.954% -- Average: 99.989596%
Cummulative Accuracy (not per pass): 99.992
</pre>
* Results are identical.
==External Links==
<references />
Or how to fix my ASL node from stuttering when I use it.
<sup>Credit: Information taken from W9CR's wiki <ref>W9CR's Wiki - Dahdi dummy[https://wiki.w9cr.net/index.php/Dahdi_dummy]</ref></sup>
== Compiling ==
=== Raspberry PI ASL 1.01 systems ===
For ASL 1.01 systems [https://wiki.allstarlink.org/wiki/Main_Page#Downloads ASL 1.01 system].
# ensure your system is up and going, with the kernel pinned per the [http://dvswitch.org/files/ASL_Images/Raspberry_Pi/Stretch/ASL_1.01-20180228-armhf-raspbian-stretch-image.readme readme]
# apt-mark hold raspberrypi-kernel-headers raspberrypi-kernel
Now run the following commands:
# apt-get install gcc raspberrypi-kernel-headers make vim git
# vim /usr/src/asl-dahdi-linux-2.11.1/linux/drivers/dahdi/Kbuild remove the # from the dummy file
# cd /usr/src/asl-dahdi-linux-2.11.1
# make
# make install
# echo -e "#needed for rpi timing \ndahdi_dummy" >>/etc/modules # add it to modules.conf
# modprobe dahdi_dummy
# service restart asterisk
=== Others ===
To build as root:
# cd /usr/src/asl-dahdi-linux-2.11.1/linux
# export MODULES_EXTRA='dahdi_dummy'
# make
=== Loading module ===
Now you need to load the module into the Linux kernel for use.
# insmod /usr/src/asl-dahdi-linux-2.11.1/linux/drivers/dahdi/dahdi_dummy.ko
Verify the module is loaded along with other DAHDI dependencies
# lsmod |grep dahdi
dahdi_dummy 3432 0
dahdi 229561 35 dahdi_dummy
crc_ccitt 1771 1 dahdi
== Configuring DAHDI ==
You will need to do dahdi_genconf and then dahdi_cfg. ASL1.01 is missing this in the service script that starts asterisk. It needs to be added.
Restart asterisk
# service asterisk restart
Run dahdi_scan to view results:
# dahdi_scan
[1]
active=yes
alarms=UNCONFIGURED
description=DAHDI_DUMMY/1 (source: HRtimer) 1
name=DAHDI_DUMMY/1
manufacturer=
devicetype=DAHDI Dummy Timing
location=
basechan=1
totchans=0
irq=0
=== Verification ===
StPeteRpt*CLI> dahdi show status
Description Alarms IRQ bpviol CRC4
DAHDI_DUMMY/1 (source: HRtimer) 1 UNCONFIGUR 0 0 0
== Testing ==
* Before DAHDI dummy module is installed
<pre>
bryan@StPeteRpt:~ $ sudo dahdi_test
[sudo] password for bryan:
Opened pseudo dahdi interface, measuring accuracy...
99.614% 99.594% 99.608% 99.608% 98.476% 99.638% 99.599% 99.601%
99.600% 98.450% 99.602% 99.600% 99.601% 99.600% 98.445% 99.581%
99.621% 99.605% 99.597% 98.478% 99.630% 99.579% 99.626% 99.601%
98.478% 99.630% 99.602% 99.600% 99.601% 98.446% 99.601% 99.580% ^C
--- Results after 32 passes ---
Best: 99.638% -- Worst: 98.445% -- Average: 99.390271%
Cumulative Accuracy (not per pass): 99.967
</pre>
* After insmod of DAHDI dummy module.
<pre>
bryan@StPeteRpt:~ $ sudo dahdi_test
Opened pseudo dahdi interface, measuring accuracy...
99.990% 99.967% 99.991% 99.992% 99.991% 99.992% 99.991% 99.991%
99.991% 99.988% 99.992% 99.991% 99.991% 99.992% 99.991% 99.991%
99.991% 99.990% 99.992% 99.991% 99.991% 99.991% 99.991% 99.991%
99.992% 99.991% 99.991% 99.992% 99.991% 99.991% 99.991% 99.991%
99.991% 99.990% 99.991% 99.992% 99.991% 99.991% 99.991% 99.991% ^C
--- Results after 40 passes ---
Best: 99.992% -- Worst: 99.967% -- Average: 99.990443%
Cumulative Accuracy (not per pass): 99.990
</pre>
* Here it is on an intel server running a pci_radio card:
<pre>
root@Itchy:/home/bryan# dahdi_test
Opened pseudo dahdi interface, measuring accuracy...
99.993% 99.986% 99.995% 99.992% 99.984% 99.971% 99.993% 99.990%
99.992% 99.992% 99.991% 99.990% 99.996% 99.990% 99.971% 99.954%
99.994% 99.992% 99.991% 99.995% 99.983% 99.993% 99.992% 99.992%
99.997% 99.990% 99.985% 99.995% 99.990% 99.996% 99.989% 99.993%
99.993% 99.989% 99.997% 99.989% 99.994% 99.996% 99.988% 99.993% ^C
--- Results after 40 passes ---
Best: 99.997% -- Worst: 99.954% -- Average: 99.989596%
Cummulative Accuracy (not per pass): 99.992
</pre>
* Results are identical.
==External Links==
<references />