Method for operating a private telecommunications network
First Claim
1. A method for operating a private telecommunications network which is connected via a connection device having a plurality of real call numbers to a public telecommunications network, the connection device being one of a multichannel private branch exchange, a call server and a voice-over IP Gateway, for establishing a telecommunications link between an external terminal connected to the public network and a plurality of internal terminals connected to the private network, each of the plurality of internal terminals having a direct dialing number, the method comprising the steps of:
- assigning the connection device a common virtual call number for access from the public network;
registering at least one of a busy state and a not-in-use state of each of the real call numbers from within the public network when the virtual call number is dialed by the external terminal; and
switching through a call to the internal terminal of the dialed direct dialing number via a free real call number.
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Accused Products
Abstract
Method for operating a private telecommunications network which is connected via at least one multichannel private branch exchange or a comparable device, in particular a call server or a voice-over IP Gateway, with a plurality of real call numbers to a public telecommunications network, the private branch exchange or comparable device for a multiplicity of real call numbers being assigned a common virtual call number for access from the public network to which a call via a free real call number to the internal terminal of the direct dialing number is switched through.
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Citations
10 Claims
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1. A method for operating a private telecommunications network which is connected via a connection device having a plurality of real call numbers to a public telecommunications network, the connection device being one of a multichannel private branch exchange, a call server and a voice-over IP Gateway, for establishing a telecommunications link between an external terminal connected to the public network and a plurality of internal terminals connected to the private network, each of the plurality of internal terminals having a direct dialing number, the method comprising the steps of:
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assigning the connection device a common virtual call number for access from the public network;
registering at least one of a busy state and a not-in-use state of each of the real call numbers from within the public network when the virtual call number is dialed by the external terminal; and
switching through a call to the internal terminal of the dialed direct dialing number via a free real call number. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A telecommunications system, comprising:
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a public telecommunications network;
a private telecommunications network;
a connection device having a plurality of real call numbers for connecting the public telecommunications network to the private telecommunications network, the connection device being one of a multichannel private branch exchange, a call server and a voice-over IP Gateway, the plurality of real call numbers of the connection device being assigned one common virtual call number;
a registration part in the public network for detecting at least one of a busy state and a not-in-use state of the real call numbers assigned to the virtual call number; and
a switching part in the public network connected downstream of the registration part for switching through a call, directed to the virtual call number, via a real call number which is detected as being free. - View Dependent Claims (8, 9, 10)
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Specification