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Seamless switch from fixed line connections to radio frequency connections and back.

IP.com Disclosure Number: IPCOM000012170D
Original Publication Date: 2003-Apr-15
Included in the Prior Art Database: 2003-Apr-15
Document File: 3 page(s) / 25K

Publishing Venue

IBM

Abstract

Modern communication devices and protocols can be used to enable a seamless switch from fixed line connections to radio frequency connections and back. This can be achieved by adding a simple device to an existing network and existing devices. This device initiates a second call parallel to the existing call and switches between the two connections as soon as they are established. Then the first connection is closed.

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  Seamless switch from fixed line connections to radio frequency connections and back.

Due to high cost, bad speech quality and health risks it is desirable to use fixed line phone connections instead of radio frequency based connections. To support this, a switch between connection options is necessary. At the moment this switch can only be performed manually. It is possible to perform this switch automatically though using standard networks and standard devices.

    A device attached to the fixed line telephone can switch the connection from a mobile nearby to the fixed line phone and back on request.

1. Manual switch from mobile to fixed line phone.

1.0 Establish link between device and mobile phone. (e.g. get number of available phones via bluetooth; plug cable into mobile phone, display/overlay a random number on the mobile phone to be entered in the device for authentification, ...)
1.1 The user initiates the handover (e.g. by pressing a button on the device; selecting a phone number on the device, display/overlay a random number on the mobile phone to be inserted in the device for authentification).
1.2 The device contacts the user's mobile phone and queries the partners number of the actual call.
1.3 The device establishes a new connection from the users fixed line phone to the remote conversation counterpart's phone and requests a handover from his phone.
1.4 The remote conversation counterpart is informed of the switch between connections by a signal.
1.5 The connection is switched to the fixed line phone connection.
1.6 The old connection from the mobile phone is closed.

2. Manual switch from fixed line to mobile phone.

2.0 Establish link between device and mobile phone. (e.g. get number of available phones via bluetooth; plug cable into mobile phone, ...)
2.1 The...