We have just released Diva Server SoftIP 2.0, allowing SDK applications to talk native SIP for Telephony and Fax applications. As with the earlier SoftIP 1.x (which provides VoIP in the H.323 environment), SoftIP uses the same SDK as our hardware, which means that one set of source code can be used to address hardware telephony (E1, BRI etc) as well as VoIP, and also hybrid hardware/software solutions are easy to put together.

The full product information is available here.

One very nice feature from a developer point of view is that you can load Diva Server SoftIP and the SDK onto a laptop, and coupled with a softphone (for example SJ Phone or phoner) you have a completely portable SIP development system, so you can work at the customer site, on a train or at home.