According to some, like here, this is a really big deal. Frankly, I don’t see it.
As far as I can tell Pingtel is not a significant player in the open source VoIP community. Oh, they’re out there, but I have literally never had anyone talk to me about Pingtel with the kind of enthusiasm that I hear about other projects. In fact, I’ve never had anyone talk to me about Pingtel. Period. I suspect that they exist at some other level, perhaps in enterprise space.
Admittedly, my focus is very SOHO/SMB-centric. From my viewpoint the broader open source VoIP community revolves around OpenSER/OpenSIPS/Kamailio, Asterisk, and more recently Freeswitch. I hear a lot of enthusiam about Freeswitch lately.