I have to say, I’ve worked with the Adtran TA924 Gen1 and Gen2 in the past and thought it was a great product then, but here recently I’ve just rediscovered the amazing flexibility of this unit and I am extremely impressed.
I’ve used the TA924 with a SIP trunk from both a Metaswitch and Asterisk before to convert to analog FXS ports and have had great success. It has always been rock solid but even back when the device was still in it’s infancy stages, it had a few limitations. I remember specifically when the unit could only do a PRI into a PBX and that is certainly no longer the case any more. There doesn’t seem to be anything this unit can’t do at this point. <3
At work, we had around 20 plus regular POTS lines through AT&T and were getting massively raped over the past several years (every year our prices have went up and at the time of porting our numbers out, we were looking at $74 dollars per POTS line and not including usage charges. Effing ridiculous. That is why I hate AT&T and refuse to support them, not to mention all their NSA spying garbage.) and I got a great deal on a PRI through our fiber internet provider so I needed a way to sort of peel out some of the channels into fax lines with DIDs and then bring the rest of the lines into my Asterisk server. In comes my old TA924 Gen2, that was collecting dust on a shelf, to the rescue. Continue reading “Adtran TA924 PRI Conversion – Routing Inbound DIDs to FXS Ports or via a SIP Trunk to Asterisk and Allowing Bi-Directional Communications Between the Two”
Copied this highly useful info straight from this website. Very strange that I didn’t have this problem until I hit Firefox version 39 but it is possible that I just hadn’t administered that particular server for a long time in Webmin.
Recent browser versions (e.g. Firefox 33) refuse to work with older Webmin installs.
They give a sec_error_invalid_key error, offer a ‘Try again’ button, but do not offer an option to add an exception.
Firefox 33 no longer supports certificates with private keys smaller than 1024 bits.
You can replace your webmin certificate with a new one by running this command: Continue reading “Firefox – Version 33 Update Causes Certificate Error in Webmin”
I ran into a problem yesterday where I could SSH into a remote machine but a majority of the bash commands weren’t working and were giving an “Input/ouput error”, including the shutdown command. Upon further inspection, this particular machine, which was a thin client with 128 MB of flash storage, had run out of drive space. The suggestion on this stack exchange article worked perfectly so I just wanted to document it here for my own future reference.
As long as you have root access, you can run the following command to force a system reboot: Continue reading “Linux – Force Remote Reboot of System”
Pieced together from various tutorials on the web with a lot of my own additions, here is a snippet of SQL that will alter or convert all tables in a database from “MyISAM” to “InnoDB”. As long as your MySQL user account has privileges to create stored procedures, all you have to do is simply edit the @DATABASE_NAME variable at the top of the script and run it in PhpMyAdmin if you’ve got it. Enjoy! Continue reading “MySQL Script – Alter/Convert All Tables in a Database from MyISAM to InnoDB”
I threw this service monitoring script together because occasionally the OpenMCU-ru process in the developmental versions can crash out on my Ubuntu Server from time to time, so I wanted it to auto-restart. The script could easily be modified and used for any other service you like, but it was written specifically for OpenMCU-ru and Debian based operating systems.
There are two pieces to this puzzle (which makes for an awfully pathetic and simplistic puzzle), the “/etc/init.d/mcu-monitor” startup script to run the monitoring script as a daemon and the “/usr/local/bin/mcu-monitor.sh” monitoring script itself, both are fairly simple and straight forward. Continue reading “Bash Script – OpenMCU-ru Service Monitor -OR- Monitor and Automatically Restart a Service Upon Failure”
Here is a scrubbed working configuration for an Adtran TA924 SIP connection to an Asterisk server with a couple of noteworthy points:
- The internal feature codes of the Adtran have been disabled with the “voice feature-mode network” command. As long as your Adtran’s internal dialplan supports it, feature codes can be passed through to Asterisk.
- With the “accept $ cost 0” statement on the “NETWORK” trunk group, the Adtran dialplan simply passes off all traffic to the network.
- Three way calling has been disabled with the “voice call-appearance-mode single” command.
- Call waiting has been disabled with the “no call-waiting” command per SIP registration.
- G711u is the only codec enabled by choice.
- There is an example of how to connect an FXS port to a SIP user.
- There is an example of how to set transmit/receive gains on an FXS port.
- There is an example of how to register an extension range of 7000-7023 to an Asterisk server.
Continue reading “Adtran Total Access TA924 – SIP Configuration for Asterisk”
Going to make this quick because I don’t have any time so…Copied straight from here with a slight modification and it works quite nicely other than the fact that if the x11vnc process dies your screwed. Eventually I will look into running it as a system service but this works for now.
Continue reading “Ubuntu Desktop – Run X11vnc Server at Startup”
Here is an Excel spreadsheet I found somewhere on the internet and modified to be the exact dimensions for the Cisco SPA500S sidecar (aka the Attendant Console) that works with any of the SPA 5xxG series of IP phones. I’ve even added extra columns to be able to add an extension and a description if you want for each line key button, which is perfect for a call center type environment. All you have to do is fill out the line keys you want on the template, print it out on any 8.5×11 sheet of paper (or any size paper that will fit the cells for that matter), then brush up on your kindergarten cutting skills and you’re in business. Enjoy!
Continue reading “Cisco SPA500S Excel Sidecar Template”
Here is a quick and dirty bash script I threw together today to log the concurrent calls for each of my long distance trunks in Asterisk to a MySQL database to be able to quickly analyze usage trends. Sure there is probably other open-source software out there that can do this and give pretty little graphs and what not (cdr-stats or maybe queue metrics come to mind), but where’s the fun in that? As I mentioned, the script is extremely primitive (just the bare minimum as I didn’t have much time to spend on it) and contains no error checking whatsoever but it could also be used as a pretty handy one-liner in bash.
Show all active SIP Calls on a single trunk
asterisk -x "core show channels verbose" | grep "^SIP/yourSIPTrunkName-"
Show concurrent number of SIP Calls on a single trunk
asterisk -x "core show channels verbose" | grep -c "^SIP/yourSIPTrunkName-"
Show all active DAHDI calls on channels 1-24
Continue reading “Bash Script – Log Concurrent Asterisk Calls to MySQL and Other Useful One-Liners”