Short description of Uplink Skype to Sip Adapter 1.21: Uplink connects SIP protocol VoIP calls to the proprietary Skype phone network. It works in both directions. Connects both incoming and outgoing calls to the Skype network. Can be used to make SkypeOut calls from a SIP device or SIP PBx. Can receive SkypeIn calls and direct them to your SIP extension. Fully complies with the RFC3261 for SIP signalling