CFM architecture with analogical interface.
CFM architecture with broadband interface.
FIXED-MOBILE CONCENTRATOR SYSTEM CFM
The Fixed-Mobile Concentrator System (CFM) is a device for fixed and mobile telephony
system convergence in a more simplified way for the user and optimized form for the operator.
The CFM system allows an user of any GSM cell phone to originate or to receive calls through
the fixed network. When the user is located in the coverage area of the CFM (residential or
corporative indoor area), the CFM allows the user to have access to the fixed network services
by using his own GSM cell phone, whatever, while the access to cellular network services is
maintained. The user takes the advantage of the tariff benefits of fixed network. Several GSM
cell phones may be able to make and receive calls from a single CFM. It is a low-cost device for
the home or corporative users of fixed and mobile telephony developed in two versions:
Version with broadband interface: it has a digital interface with the fixed network
through a broadband access such as ADSL or cable modem. In this version, up to 3 calls can be performed simultaneously by
different GSM cell phones, using the same fixed line. The calls of each cell phone correspond to
the different sessions of VoIP ("Voice over IP) calls on the fixed network operator under full
control of fixed, VoIP provider or mobile operator.
Version with analogical line interface: it has an interface to the analogical line
of the fixed network. Due to the limitations of fixed line network, only one connection can be
established at once over the same fixed line.