Aastra OpenCom 510 User Guide - Page 67
Modules
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Modules 8. Modules This chapter provides detailed technical information on the modules which can be installed in the OpenCom 510. You will find information on their respective fields of application, along with technical and operational information and notes on indicators. The modules fulfil the following tasks: ■ Power supply units (max. 2) provide the OpenCom 510 with power. ■ A central control module controls the entire system. This module also houses the memory card (CompactFlash) for storing data. ■ Interface cards are used to connect the OpenCom 510 to the telecommunications network (or to another communications system) and to connect terminals. A number of interface cards are available for these tasks. Depending on the interface card's functions, it may also be referred to as a trunk module or as a subscriber module. For detailed information on installing modules, refer to the chapter Installing Modules starting on page 26. Please note: When installing modules, always observe the Safety Precautions starting on page 21! 65