Developer's DescriptionBy Sasa CohMake phone calls over the Internet.Sipek Softphone is a SIP phone and messaging client based on SipekSdk engine powered by pjsip.org SIP stack. Combining voice calls, Instant Messaging and presence in an intuitive user interface, Sipek takes you into the world of Voice over IP. The Sipek Softphone simple software design enables efficient development, easy upgrading and user interface customizations.