System and Method for Alternating Between In-Band and Out-of-Band Communication Path
First Claim
Patent Images
1. A wireless handheld telephony device comprising at least one wireless signal receiver, at least one wireless signal transmitter, and at least one data processor configured to send and receive wireless signals representing control messages to and from a call control server by:
- in response to a determination that an out-of-band path to the call control server is available;
sending the wireless signals representing control messages through the at least one wireless signal transmitter to the call control server using the out-of-band path; and
receiving the wireless signals representing control messages through the at least one wireless signal receiver from the call control server using the out-of-band path;
in response to a determination that the out-of-band path to the call control server is unavailable;
initiating in-band communication with the call control server using an in-band path;
sending the wireless signals representing control messages through the at least one wireless signal transmitter to the call control server using the in-band path; and
receiving the wireless signals representing control messages through the at least one wireless signal receiver from the call control server using the in-band path.
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Accused Products
Abstract
Systems, methods and devices are disclosed useful for enabling wireless signals representing control messages to be sent between a wireless handheld telephony device and a call control server during an ongoing communication session when an out-of-band path becomes unavailable, the communication session being controlled by the call control server.
25 Citations
19 Claims
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1. A wireless handheld telephony device comprising at least one wireless signal receiver, at least one wireless signal transmitter, and at least one data processor configured to send and receive wireless signals representing control messages to and from a call control server by:
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in response to a determination that an out-of-band path to the call control server is available; sending the wireless signals representing control messages through the at least one wireless signal transmitter to the call control server using the out-of-band path; and receiving the wireless signals representing control messages through the at least one wireless signal receiver from the call control server using the out-of-band path; in response to a determination that the out-of-band path to the call control server is unavailable; initiating in-band communication with the call control server using an in-band path; sending the wireless signals representing control messages through the at least one wireless signal transmitter to the call control server using the in-band path; and receiving the wireless signals representing control messages through the at least one wireless signal receiver from the call control server using the in-band path. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of enabling a wireless handheld telephony device to send and receive wireless signals representing control messages to and from a call control server, the wireless handheld telephony device comprising at least one wireless signal receiver, at least one wireless signal transmitter, at least one data processor, and media readable by the at least one data processor comprising coded program instructions, the method comprising:
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in response to a determination that an out-of-band path to the call control server is available; sending the wireless signals representing control messages through the at least one wireless signal transmitter to the call control server using the out-of-band path; and receiving the wireless signals representing control messages through the at least one wireless signal receiver from the call control server using the out-of-band path; in response to a determination that the out-of-band path to the call control server is unavailable; initiating in-band communication with the call control server using an in-band path; sending the wireless signals representing control messages through the at least one wireless signal transmitter to the call control server using the in-band path; and receiving the wireless signals representing control messages through the at least one wireless signal receiver from the call control server using the in-band path. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A system configured to enable wireless signals representing control messages to be sent and received from a wireless handheld telephony device, the system comprising:
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a data processor, media readable by the data processor, and a communications subsystem; the communications subsystem adapted to process signals representing communications by and between the wireless handheld telephony device, the second telephony device, and the processor; and the media readable by the data processor comprising coded program instructions adapted to cause the processor to; when an out-of-band path to the wireless handheld telephony device is available; send the wireless signals representing control messages through the at least one wireless signal transmitter to the wireless handheld telephony device using the out-of-band path; and receive the wireless signals representing control messages through the at least one wireless signal receiver from the wireless handheld telephony device using the out-of-band path; when the out-of-band path to the wireless handheld telephony device is unavailable; receive an initiation signal from the wireless handheld telephony device indicating that the out-of-band path is unavailable; send the wireless signals representing control messages through the at least one wireless signal transmitter to the wireless handheld telephony device using the in-band path; and receive the wireless signals representing control messages through the at least one wireless signal receiver from the wireless handheld telephony device using the in-band path. - View Dependent Claims (16, 17, 18, 19)
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Specification