System for communicating with an ADSI-compatible telephone via a service circuit node
First Claim
1. A system for communicating textual information to an Analog Display Services Interface (ADSI)-compatible telephone via a public switch telephone network comprising a central office having a service switching point, said ADSI-compatible telephone, which includes a visual display for displaying said textual information, outputs a service selection signal over a telephone line to access an ADSI service providing said textual information and outputs a service disconnect signal over said telephone line to terminate access to said ADSI service, said system comprising:
- a service circuit node, connected to said service switching point, for generating said ADSI service including information signals comprising said textual information and telephone instructions; and
an adjunct processor, connected to said service circuit node and removably connected to said telephone line, for supplying information data for transmission over said telephone line by processing said information signals,whereby said service circuit node outputs said information signals to said adjunct processor and connects said adjunct processor to said telephone line in response to said service selection signal, and disconnects said adjunct processor from said telephone line in response to said service disconnect signal; and
whereby said visual display displays said textual information.
3 Assignments
0 Petitions
Accused Products
Abstract
A telephone display system (10) for communicating data via a service circuit node (11) connected to a PSTN (13) for presentation by a visual display (26) connected to an Analog Display Service Interface (ADSI)-compatible telephone (14). In response to a service selection signal carried by an incoming telephone line (21), the service circuit node (11) generates information signals containing textual information and telephone instructions. The service circuit node (11) also connects the incoming telephone line (21) to an adjunct processor (12) and sends the information signals to the adjunct processor (12). In response, the adjunct processor (12) modulates a carrier in accordance with the digital information signals and transmits the resulting analog information data over the telephone line (21). If the telephone instructions include an initial instruction for causing the ADSI-compatible telephone to enter a data mode, the adjunct processor also converts the digital initial instruction into an analog format for transmission over the telephone line. The visual display (26) enters the data mode and displays the textual information.
150 Citations
24 Claims
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1. A system for communicating textual information to an Analog Display Services Interface (ADSI)-compatible telephone via a public switch telephone network comprising a central office having a service switching point, said ADSI-compatible telephone, which includes a visual display for displaying said textual information, outputs a service selection signal over a telephone line to access an ADSI service providing said textual information and outputs a service disconnect signal over said telephone line to terminate access to said ADSI service, said system comprising:
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a service circuit node, connected to said service switching point, for generating said ADSI service including information signals comprising said textual information and telephone instructions; and an adjunct processor, connected to said service circuit node and removably connected to said telephone line, for supplying information data for transmission over said telephone line by processing said information signals, whereby said service circuit node outputs said information signals to said adjunct processor and connects said adjunct processor to said telephone line in response to said service selection signal, and disconnects said adjunct processor from said telephone line in response to said service disconnect signal; and whereby said visual display displays said textual information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for communicating textual information to an ADSI-compatible telephone via a public switch telephone network comprising a central office having a service switching point, said ADSI-compatible telephone, which includes a visual display for displaying said textual information, outputs a service selection signal over a telephone line to initiate access to an ADSI service providing said textual information, comprising the steps:
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receiving said service selection signal at a service circuit node connected to said service switching point; selecting a service program operating on said service circuit node in response to said service selection signal; connecting said telephone line to an adjunct processor in response to said service selection signal, said adjunct processor connected to said service circuit node; supplying said ADSI service including information signals containing said textual information and telephone instructions to said adjunct processor from said service circuit node; transmitting information data over said telephone line in response to said adjunct processor processing said information signals; and displaying said textual information on said visual display. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification