OpenSIPS (OpenSER) http://snapvoip.blogspot.com/
If You are serving your clients solutions based on OpenSIPS (formarly OpenSER), now you can put them at ease with the OpenSIPS Certified Professional (OCP). The OCP credentials will show that you can design, implement and administer a SIP solution based on the OpenSIPS SIP Server.
To earn the OCP on OpenSIPS Server, you must pass a single exam:
- OpenSIPS Certified Professional ExamExam Details:The OpenSIPS exam is a 60 minute test with 70 questions.Register for an exam via firstname.lastname@example.org .
Further information is available at OpenSIPS certification information page.