Aastra OpenCom 130 User Guide - Page 179
number and use system features.
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Fixed Mobile Convergence ■ Call number information such as e. g. the call number of an external caller can be transmitted using the "CLIP no screening" feature available via the system connection and thus be displayed on the mobile telephone. ■ There is an information exchange via DTMF tones during a voice connection between the communications system and the mobile telephone. This means that e. g. the "R" key function is transmitted via a DTMF sequence with three star signs. ■ A mobile telephone call with the FMC call number is considered the beginning of the log-in procedure. After authentication via the call number (CLIP) or via a special DTMF sequence, there is an audible internal dial tone on the mobile telephone. The mobile telephone user can now dial any internal or external call number and use system features. ■ There is special software available for a series of mobile telephones: "Aastra Mobile Client". This software makes it convenient to use FMC telephony functions. The following diagrams illustrate the integration of mobile telephones with the OpenCom 100 communications system via FMC using three sample call situations: 177