T-Comfort Comfort Pro S, Руководство по монтажу и пусконаладке

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Fixed Mobile Convergence
Fixed Mobile Convergence
The “Fixed Mobile Convergence” (FMC) feature offers operation of mobile telephones on the Comfort Pro S
communications system. Connections to and from the mobile telephone are directed via the communications
system. This is done by the communications system managing the mobile telephone as an internal terminal
with its own internal call number. This is how all features of the system telephony can be used on the mobile
telephone. Connection expenses billed on the mobile network are limited to the connection to the
communications system. When the mobile telephone user establishes an external connection (e. g. an
international call) via the communications system, the expenses for the international call are apportioned to
the system.
Of particular interest is parallel operation of a stationary system telephone and a mobile telephone that can
be reached under the same internal call number. There is no difference in how both terminals can be reached
by callers: an incoming call is signalled on the system telephone and on the mobile telephone at the same
time. When a call is accepted on the mobile telephone, the terminal of the caller does not display the mobile
call number, rather the office call number administered on the Comfort Pro S communications system is
displayed, which can be used to reach the system telephone as well. It is possible to take an ongoing call from
the mobile telephone on the system telephone (and vice versa). System features such as e. g. enquiries and
forwarding are available with calls via the mobile telephone just as with calls via the system telephone. An
outgoing call using the mobile telephone is executed via the same call number as a call from the system
telephone.
The FMC feature requires no additional hardware. The technical solution comprises the following:
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Each mobile telephone (= FMC telephone) is assigned an internal call number which is used for the
configured mobile call number. The radio technology of the mobile network (GSM, UMTS or CDMA) is not
relevant.
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A mobile telephone is generally integrated with the communications system via an ISDN system
connection or via a DDI-capable SIP line. An internal FMC call number is configured for the connection
between communications system and mobile telephone. The FMC call number can be called externally
from the mobile telephone using an ISDN system access. In addition, all calls made to the mobile
telephone are conducted using this FMC call number. A further internal FMC call number can be
additionally configured for transmission of MWI such that the mobile telephone user can be informed of
waiting messages (e. g. voicebox messages).