Switching telephone calls between wireline and cellular telephones
First Claim
1. A system for enabling a telephone subscriber to switch an on-going telephone call between wireline services provided through a central office in the public switched telephone network and cellular services provided by a mobile switching center in a cellular network after the telephone call has been initially routed to the telephone subscriber, the system comprisinga routing table for identifying specific telephone subscribers entitled to switch an on-going telephone call between wireline and cellular services,a look-up table identifying the correspondence of said one telephone subscriber'"'"'s wireline and cellular telephone numbers,a monitor circuit responsive to a unique signal during the on-going telephone call that had already been established to the telephone subscriber from said one telephone subscriber indicating a desired transfer of said on-going telephone call between said one specific telephone subscriber'"'"'s wireline and cellular telephones, andswitch means responsive to said monitor circuit for effecting said transfer of said on-going telephone call.
11 Assignments
0 Petitions
Accused Products
Abstract
A telephone subscriber having both a wireline and a cellular telephone can switch calls between these phones. A routing table identifies that a subscriber is entitled to this service, and a look up table maintains the telephone numbers of the two different telephones. Upon detection of a unique signal indicating a request for switching a call connected to one of the telephones to the other telephone, a connection is made to the other telephone, the two connections are bridged, and then the first connection is dropped. The routing table may be maintained in a central office and the look up table may be maintained in a mobile switching center or a fixed cellular mobility agent.
54 Citations
19 Claims
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1. A system for enabling a telephone subscriber to switch an on-going telephone call between wireline services provided through a central office in the public switched telephone network and cellular services provided by a mobile switching center in a cellular network after the telephone call has been initially routed to the telephone subscriber, the system comprising
a routing table for identifying specific telephone subscribers entitled to switch an on-going telephone call between wireline and cellular services, a look-up table identifying the correspondence of said one telephone subscriber'"'"'s wireline and cellular telephone numbers, a monitor circuit responsive to a unique signal during the on-going telephone call that had already been established to the telephone subscriber from said one telephone subscriber indicating a desired transfer of said on-going telephone call between said one specific telephone subscriber'"'"'s wireline and cellular telephones, and switch means responsive to said monitor circuit for effecting said transfer of said on-going telephone call.
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4. A method for enabling a telephone subscriber to switch an on-going telephone call between wireline services provided through a central office in the public switched network and cellular services provided by a mobile switching center in a cellular network after the telephone call has been initially established between wireline and cellular services, said method comprising the steps of:
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identifying in a routing table in the central office specific telephone subscribers entitled to switch telephone calls between wireline and cellular services; providing a correspondence between said specific subscriber'"'"'s wireline and cellular telephone numbers; monitoring a signal from one of said specific telephone subscribers during the existence of an on-going telephone call that had previously been established to said specific subscriber to initiate a call transfer between said subscriber'"'"'s wireline and cellular telephones; and enabling a switch to effect the transfer in response to said monitored signal. - View Dependent Claims (5, 6, 7, 19)
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8. A method for enabling a telephone subscriber to switch an on-going telephone call between wireline services provided through a central office in the public switched network to the subscriber'"'"'s wireline telephone and cellular services provided by a mobile switching center in a cellular network to the subscriber'"'"'s cellular telephone after the telephone call has been initially routed to the telephone subscriber, said method comprising the steps of:
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establishing a call connection to one of said subscriber'"'"'s telephones; monitoring said call connection to a subscriber entitled to switch calls between that subscriber'"'"'s wireline and cellular telephones to detect a request signal for such transfer; obtaining the telephone number of the other of said subscriber'"'"'s wireline and cellular telephones not presently engaged in the telephone call; and responsive to a signal from said subscriber during the already established connection to said one of said subscriber'"'"'s telephones, switching the telephone call to said other of said subscriber'"'"'s wireline or cellular telephones and terminating the connection to said one of said subscriber'"'"'s wireline or cellular telephones. - View Dependent Claims (9, 10, 11)
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12. A system for enabling a telephone subscriber to switch an on-going call between wireline services provided through a central office in the public switched telephone network and cellular services provided by a mobile switching system center in a cellular network after the telephone call has been initially routed to the telephone subscriber, said system comprising:
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a fixed cellular mobility agent having the functionality of a central office and coupled to said mobile switching center, said fixed cellular mobility agent comprising means for establishing a connection to one of a subscriber'"'"'s wireline and cellular telephones; means for monitoring and detecting a request from said one subscriber during said already established connection to transfer the call connection to the other of said subscriber'"'"'s wireline or cellular telephones; and means for switching the connection in response to said detected request.
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13. A method for enabling a telephone subscriber to switch an already established on-going telephone call to one of said subscriber'"'"'s wireline and cellular telephones to the other of the subscriber'"'"'s telephones, said subscriber wireline and cellular telephones being assigned different telephone numbers, said method comprising the steps of
monitoring a call connection to one of said subscriber'"'"'s telephones to detect a request by said subscriber to switch the already established on-going connection between said subscriber'"'"'s telephones, obtaining the telephone number of said other of said subscriber'"'"'s telephones, initiating an outgoing call from said other of said subscriber'"'"'s telephones, and bridging the connections to said one and said other of said subscriber'"'"'s telephones and terminating the connection to said one of said subscriber'"'"'s telephones.
Specification