From their site: LignUp Communications Web Services enable developers with no CTI or SIP experience to easily integrate real-time communications into applications, portals and processes. LignUp powered Solutions connect any two phones independent of the existing telecom infrastructure. Welcome to our BETA developer program. Register to access some of our call control and media control web services, leveraging the Level 3 Network. Upon registration, you will receive 800 free, one-minute (maximum time limited) calls.
The following is a list of libraries from ProgrammableWeb's Library Directory that matched your search term. Although there many different interpretations of the word "library" among software developers, ProgrammableWeb adheres to a specific definition so as to clearly distinguish libraries from SDKs and frameworks in a way that will facilitate clean search results. In ProgrammableWeb's parlance, the term "library" is strictly used to describe a platform-specific software tool that, when installed, results in the provisioning a specific API. Conversely, SDKs are exclusively for consuming APIs and Frameworks are agnostic to specific APIs. If you think a library, SDK, API, or other asset is missing from our directory, be sure to check our guidelines for making contributions to ProgrammableWeb.