This study examines a two-way communication retrial queue with collision and working breakdown. Retrial incoming calls may interfere with service if the server is busy with primary incoming calls. Arriving primary incoming calls are sent to the orbit while the server is busy or enter for service if the server is discovered to be idle. The server places calls while it is idle. Incoming calls are given high priority, and outgoing calls are given low priority. During regular service, the system may fails at any time. The server will continue to provide service after a breakdown even though at a slower rate rather than shutting down completely. We assume that outgoing calls and service time distributions are modelled in terms of various PH distributions, while incoming calls are assumed to follow a Markovian arrival process (MAP). The matrix-analytic approach will be used to investigate the resulting QBD process in steady state. Some of the performance metrics’ calculations have been figured out. At the end, the results are presented in both numerical and graphical form.