Abstract: An external capability for measuring roundtrip latency in a conferencing system is provided. The external capability for measuring roundtrip latency in a communication system may include functions of generating a content event, detecting the content event in a received content stream including the content event, determine a first time associated with generation of the content event and a second time associated with detection of the content event, and computing a roundtrip latency based on a difference between the second time and the first time. The content event may be a visual event or an aural event. These functions may be implemented using one or more modules or elements. A computing device may be used to generate and detect the content event and to compute the roundtrip latency. Various other arrangements of modules or elements may be used to provide the functions.

Abstract: An external capability for measuring roundtrip latency in a conferencing system is provided. The external capability for measuring roundtrip latency in a communication system may include functions of generating a content event, detecting the content event in a received content stream including the content event, determine a first time associated with generation of the content event and a second time associated with detection of the content event, and computing a roundtrip latency based on a difference between the second time and the first time. The content event may be a visual event or an aural event. These functions may be implemented using one or more modules or elements. A computing device may be used to generate and detect the content event and to compute the roundtrip latency. Various other arrangements of modules or elements may be used to provide the functions.

Abstract: Systems and techniques for mediating communication between applications over a message transport bus. A software wrapper includes a virtual bus wrapper presenting an interface to the applications, with the interface being presented such that the message transport bus is transparent to the applications. The wrapper also includes a bus specific wrapper to adapt the message transport bus to the virtual bus wrapper, as well as a support wrapper. Changes to the applications being supported or to the message transport bus can be accommodated by changes to the virtual bus wrapper or to the bus specific wrapper, respectively. In particular, changes to the bus specific wrapper allow migration to a new or changed message transport bus or a system using a different message transport bus without a need to adapt each application to the new bus.