Dahdi dummy - Revision history

KM4NNO at 17:09, 5 February 2022

2022-02-05T17:09:47Z

Kg7qin at 20:42, 10 July 2021

2021-07-10T20:42:42Z

Kg7qin at 02:41, 15 March 2021

2021-03-15T02:41:18Z

KM4NNO at 23:10, 31 December 2020

2020-12-31T23:10:55Z

Kg7qin: Created initial page with information provided by W9CR's wiki at https://wiki.w9cr.net/index.php/Dahdi_dummy

2020-01-03T09:20:03Z

Created initial page with information provided by W9CR's wiki at https://wiki.w9cr.net/index.php/Dahdi_dummy

New page

=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 />

@@ Line 1: / Line 1: @@
 [[Category:How to]]
 [[Category:Node Configuration]]
 [[Category:Administration]]

← Older revision		Revision as of 02:41, 15 March 2021
Line 1:		Line 1:
		+	[[Category:How to]]
		+	[[Category:Node Configuration]]
		+	[[Category:Administration]]
	=DAHDI Dummy=		=DAHDI Dummy=
	Or how to fix my PTTLink node from stuttering when I use it.		Or how to fix my PTTLink node from stuttering when I use it.

@@ Line 25: / Line 25: @@
   # echo -e "#needed for rpi timing \ndahdi_dummy" >>/etc/modules  # add it to modules.conf
   # modprobe dahdi_dummy
-  # service restart asterisk
+  # service asterisk restart
 === Others ===

@@ Line 1: / Line 1: @@
 =DAHDI Dummy=
-Or how to fix my ASL node from stuttering when I use it.
+Or how to fix my PTTLink 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>
@@ Line 6: / Line 6: @@
 == Compiling ==
-=== Raspberry PI ASL 1.01 systems ===
+=== Raspberry PI PTTLink 1.01 systems ===
-For ASL 1.01 systems [https://wiki.allstarlink.org/wiki/Main_Page#Downloads ASL 1.01 system].
+For PTTLink 1.01 systems [https://wiki.allstarlink.org/wiki/Main_Page#Downloads PTTLink 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]
@@ Line 41: / Line 41: @@
   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.
+You will need to do dahdi_genconf and then dahdi_cfg.  PTTLink1.01 is missing this in the service script that starts asterisk.  It needs to be added.
 Restart asterisk