Abstract: An example apparatus includes an input buffer coupled to an input terminal, wherein the input buffer is configured to provide an input signal based on a voltage received at the input terminal, a test terminal configured to receive a probe signal, and a power supply terminal configured to receive an external supply voltage. The example apparatus further includes a test logic circuit configured to, in response to the probe signal indicating a test and an external supply voltage detection signal having a value indicating detection of the external supply voltage, initiate a probe contact detection test. During the initiate a probe contact detection test, the test logic circuit is configured to receive the input signal and to provide an output signal having a value based on the input signal.

Abstract: An example apparatus includes an input buffer coupled to an input terminal, wherein the input buffer is configured to provide an input signal based on a voltage received at the input terminal, a test terminal configured to receive a probe signal, and a power supply terminal configured to receive an external supply voltage. The example apparatus further includes a test logic circuit configured to, in response to the probe signal indicating a test and an external supply voltage detection signal having a value indicating detection of the external supply voltage, initiate a probe contact detection test. During the initiate a probe contact detection test, the test logic circuit is configured to receive the input signal and to provide an output signal having a value based on the input signal.

Abstract: A system and method that provides reliable connectivity of conference calls by ensuring that sufficient network resources are available at the time of the requested conference calls. The system includes multiple endpoints for requesting conference calls, and a gatekeeper bound to a resource scheduler such that requested conference calls are scheduled via the scheduler according to connectivity policies maintained by the gatekeeper.

Abstract: A system and method that provides reliable connectivity of conference calls by ensuring that sufficient network resources are available at the time of the requested conference calls. The system includes multiple endpoints for requesting conference calls, and a gatekeeper bound to a resource scheduler such that requested conference calls are scheduled via the scheduler according to connectivity policies maintained by the gatekeeper.

Abstract: A system and method for dynamically cascading MCUs according to gatekeeper and network resource utilization policies. The system comprises local area networks that couple multiple endpoints and multiple MCUs to a resource scheduler, a gatekeeper, and a network resource manager. The network manager determines whether network resources are optimized by cascading MCUs. The gatekeeper includes a cascade optimization module for determining an optimum configuration for cascading two or more MCUs together. The cascade configuration is determined according to the connectivity policies maintained by the gatekeeper.