Monthly Archives: September 2009

Graphviz

Some weeks ago I found this program called Graphviz, seems rather interesting, can’t wait to use it in any future project documentation I get involved with. Particularly useful to design/document state machines that are common in telephony.

Posted in GNU/Linux General | Leave a comment

Quick tip for debugging deadlocks

If you ever find yourself with a deadlock in your application, you can use gdb to attach to the application, then sometimes you find one of the threads that is stuck trying to lock mutex x. Then you need to … Continue reading

Posted in C/C++, linux | Leave a comment

Sangoma Tapping Solution for Asterisk

Sangoma has offered a tapping device for T1/E1 lines for quite some time now. This physical tapping works by installing a PN 633 Tap Connection Adapter, which looks like this: As you can see, you will receive the line from … Continue reading

Posted in asterisk, sangoma | 39 Comments

New Project – Sangoma Bridge

A couple of months ago I wrote a little application for Regulus Labs. The application is a simple daemon bridge between Sangoma E1 devices receving ISDN PRI calls and a TCP IP server. Everything received on the telephony side was … Continue reading

Posted in C/C++, linux | 2 Comments