Aastra OpenCom 100, Руководство по монтажу и пусконаладке

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Fixed Mobile Convergence
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14. Fixed Mobile Convergence
The “Fixed Mobile Convergence” (FMC) feature offers operation of mobile tele-
phones on the OpenCom 100 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 ter-
minal 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 inter-
national 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 adminis-
tered on the OpenCom 100 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 fea-
tures 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 com-
prises the following:
■
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.
■
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. 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).