(you may want to read my previous post on SIP interoperability in general first: SIP and interoperability) So, SIP as an open system allows you to use SIP headers, content, and sessions in creative ways to enable new functionality. That is the core technical reason for why H.323 is on the way out in the […]
SIP and interoperability: certification, de-facto standards, and Brownian motions
Ok, I’m back from a period of inward-facing egocentric activities, now I’m ready to go to outward-facing egocentric activities (like this blog). I have updated my profile and although SIP will continue to be an important part of what I post about, I will broaden the scope of the topics I post on. I thought I’d start out […]
VON Europe: Many telcos stay at home…
More than half-way into VON Europe, an observation is that many telcos are notably absent. Are they tired of the IMS vs. pure-SIP discussions and just want to participate on their “home” arenas where they can concentrate on how to deploy IMS or implement Fixed Mobile Convergence?
Competing eco-systems, IMS, SER, Asterisk, who will win?
I have wanted to write this post for a while. For a long time I have been concerned about the competitiveness of the SER/OpenSER eco-system in the larger SIP picture. Let’s look at the big picture: SIP has been established as the preferred signalling protocol for real-time sessions like voice and media. It bears the […]
SER, IMS, and walled gardens
Interesting discussion on serusers the last week or so: Dragos from FOKUS Fraunhofer announced that they will GPL IMS-extensions to SER. Also, several people have independent from that posted questions about SER for CSCF functions. The discussion of course quickly turned to “what’s the point about IMS”. Of course, the usual suspects in these kind […]