Identification of calling devices dialing a universal number to access a telecommunications relay service center
First Claim
Patent Images
1. A method for routing a call to a telecommunications relay service center, the call being initiated in response to a calling party inputting a universal telephone number into a communications device, the method comprising:
- establishing a communications connection between the communications device and the telecommunications relay service center over a signaling system 7 (SS7) feature group D trunk line; and
forwarding a charge number (CN) to the telecommunications relay service center over the signaling system 7 feature group D trunk line.
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Abstract
A dialed universal telephone number is translated into a toll free telephone number corresponding to a telecommunications relay service center in a telecommunications system. When the call is connected to the telecommunications relay service center, information that identifies the caller is reliably forwarded to the telecommunications relay service center.
106 Citations
14 Claims
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1. A method for routing a call to a telecommunications relay service center, the call being initiated in response to a calling party inputting a universal telephone number into a communications device, the method comprising:
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establishing a communications connection between the communications device and the telecommunications relay service center over a signaling system 7 (SS7) feature group D trunk line; and forwarding a charge number (CN) to the telecommunications relay service center over the signaling system 7 feature group D trunk line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A telecommunications system that routes a call to a telecommunications relay service center, the call being initiated in response to a calling party inputting a universal telephone number into a communications device, the telecommunications system comprising:
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a service switching point that establishes a communications connection between the communications device and the telecommunications relay service center over a signaling system 7 (SS7) feature group D trunk line, the service switching point forwarding a charge number (CN) to the telecommunications relay service center over the signaling system 7 feature group D trunk line; and a service control point that communicates with the service switching point, the service control point translating the universal telephone number into a telephone number corresponding to the telecommunications relay service center. - View Dependent Claims (11, 12)
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13. A computer readable medium storing a computer program that routes a call to a telecommunications relay service center, the call being initiated in response to a calling party inputting a universal telephone number into a communications device, the computer readable medium comprising:
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a communications connection establishing code segment that establishes a communications connection between the calling party and the telecommunications relay service center over a signaling system 7 (SS7) feature group D trunk line; and an identification information forwarding code segment that forwards a charge number (CN) of the calling party to the telecommunications relay service center over the signaling system 7 feature group D trunk line. - View Dependent Claims (14)
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Specification