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Install Certified Asterisk 13 from source on Ubuntu 14.04 LTS
Need an Asterisk setup? Why not combine the long term support of an Ubuntu LTS release with the long term support of a Certified Asterisk release? Certified Asterisk releases are supported for around 4...
View ArticleElastix *69 (Call Trace) Fix
We’re running an older installation of Elastix at my office, version 2.0.0 (release 58) on top of freePBX version 2.7.0 (release 10). The call trace feature was bothering me. This feature is mapped to...
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Raspberry Pi RTS / CTS Flow Control
I had need of a 3.3v TTL serial interface to reprogram a device I was working on. Looking around I realized I had mostly 5v logic USB to serial adapters. I figured the Raspberry Pi would work well...
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Arduino Leonardo (ATMega32u4) USB Power Button
Project introduction For fun I made this USB power button with an Arduino Micro/Leonardo-like board (by which I mean one using the Atmel ATMega32u4 MCU with USB controller). The project details are...
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Retro-Joystick to USB Keyboard Adapter
Project introduction I made an adapter to take classic video game controllers for Sega, Atari (2600, 7800) and Commodore (VIC20, C64, C128) and adapt them to work as a 5 button USB keyboard (4...
View ArticleBash Snippet: Luhn Algorithm
I like Bash, but it isn’t well suited for some tasks. For fun I sometimes ignore that. Occasionally people seem to find this useful. In that spirit, here is my implementation of the popular Luhn /...
View ArticleGleaming the Heap
You connect into the server and type “w” to see who else is on. You see a connection from an IP you don’t recognize! 14:43:11 up 5 days, 22:32, 2 users, load average: 0.52, 0.41, 0.36 USER TTY...
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Finding Malware URLs in W97M infected Word Docs
An email with a trojan Microsoft Word document made it past the spam filter today at work. At least one user reported opening the attachment. The attachment was named: DOCO943488.doc, but running the...
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Phone Phreak Silver Box
How many Touch-Tone digits does your landline have? 12 ? …That’s so pedestrian. If you’re a phone geek you might know about the old military AUTOVON phone system. These phones added 4 additional...
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GXP2020EXT Provision & Template
The Grandstream GXP2020EXT is an accessory “sidecar” (or in Grandstream-speak “Expansion Module”) that adds 56 speed dials with BLF to Grandstream model GXP20xx VoIP telephones. In the article below...
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