# Master/Slave ### Master Master is a module state that indicates which module instance is taking decisions for the system. ### Slave Slave is another instance state that indicates the module is taking orders from the master application. The slave instance can still exectute some actions as opposed to [Active/Standby](/appendices/appendix-a-glossary/glossary-toolpack/glossary-tboamapp/master-slave/active-standby.md) modules where the standby module does not take any actions. ### Example Example: tboamapp is a master/slave type application. The master tboamapp makes most decisions, but the slave tboamapp is still responsible to start applications on its host. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://prosbcdocs.telcobridges.com/appendices/appendix-a-glossary/glossary-toolpack/glossary-tboamapp/master-slave.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.