I am once again dealing with yet another so-called major carrier that when they cannot determine a reason for a call failure they blame the fact that our SIP signaling has two Via Headers.
However, it is my understanding from RFC 3261, that multiple Via headers are allowed and should not even be a […]

Over the next couple weeks I intend to detail the configuration and usage of the Nokia E61i phone. I have been using the E61i for a few months now. I was also lucky enough to use E61 for quite a while, so will also document some of the differences and will tell you if […]

I have been asked to participate in an advanced OpenSER and Asterisk integration training program. The primary goal of this project is to provide the necessary details allowing you to deploy and manage a highly scalable VoIP service using open source technologies.
We are just now starting to get organized, so at this point I […]