Q.93b Driver Interface

The signalling API, called Q.2931 Call Control (qcc), consists of two sets of similar functions: one for applications running in the kernel and one for applications running in user space. Each set provides functions to build and parse Q.2931 signalling messages, which are required to set up and tear down connections.

One additional function assists applications in establishing appropriate connections to the Q.93B driver. q_ioc_bind associates a service access point (SAP) with the specified connection to the Q.93B driver. The driver uses the SAP to direct incoming messages to applications.