The OSP Toolkit is a client side implementation of the ETSI OSP VoIP Peering protocol (ETSI TS 101 321). The OSP Toolkit project was begun in 1998 and the code has been incorporated into many commercial and open source VoIP products.
Caller ID is a callerid management application to keep track of calls both locally and remotely. Offers many features including voice mail, real-time notification over the internet while the phone is still ringing. Send using MSM, Email, FTP etc.
SipXTapiDotNet provides an object oriented .Net 2.0 interface to the SipXTapi library that can be found at SipFoundry.org. No more decompiling to IL code to fix Cdecl callbacks -- .Net 2.0 has Cdecl callbacks and more!