Telephone system integrated text based communication apparatus and system to enhance access for TDD and/or TTY devices

• US 5,940,475 A
• Filed: 05/30/1997
• Issued: 08/17/1999
• Est. Priority Date: 05/30/1997
• Status: Expired due to Term

• Current Assignee: RPX Clearinghouse LLC (RPX Corporation)
• Original Assignee: Northern Telecom Limited (Nortel Networks Corporation)
• Inventors: Hansen, Frederick W.
• Primary Examiner(s): Kuntz, Curtis A.
• Assistant Examiner(s): RAMAKRISHNAIAH, MELUR
• Application Number:
  US08/865,699
• Time in Patent Office: 809 Days
• Field of Search: 379/52, 379/67, 379/89, 379/93.15, 379/93.17, 379/93.24, 379/100.08, 379/100.13, 358/402
• US Class Current: 379/52
• CPC Class Codes: H04M 3/42314 in private branch exchanges
• CPC Class Codes: H04M 3/533 Voice mail systems

Abstract

An integrated text based TTY system comprises a telephone network, a private branch exchange, a voice mail system, and a text server. The telephone network is adapted to receive a TTY call from a calling party from a TTY device, which is external to said integrated text based TTY system, to a called party. A private branch exchange is in communication with the telephone network and adapted to receive the TTY call from the telephone network. A voice mail system is in communication with the private branch exchange. A text server is in communication with the private branch exchange to receive the TTY call. The text server is also in communication with the voice mail system. The text server receives identification information to identify the called party, so that the text server can check a database of individuals able to receive the TTY call to determine whether the called party is in the database and if the called party is in the database then the text server signals the called party that the TTY call from the calling party has been made. The private branch exchange is also in communication with the text server via a modem and a first communication path extending from the private branch exchange to the modem and the modem is in communication with the text server to receive the TTY call which is routed to the text server by the private branch exchange. The modem recognizes the TTY call as conforming to TTY standards and, if necessary, converts the TTY call into ASCII. The modem also receives a response to the TTY call and converts the response to the TTY call into an appropriate format that conforms to the TTY standards to create a converted response to the TTY call, and transmits the converted response to the TTY call.

Claims

1. An integrated text based TTY system, comprising:

(a) a telephone network adapted to receive a TTY call and identification information from a calling party using a TTY device to a called party;

(b) a private branch exchange in communication with said telephone network and adapted to receive said TTY call from said telephone network;

(c) a voice mail system in communication with said private branch exchange; and

(d) a text server in communication with said private branch exchange to receive said TTY call, said text server in communication with said voice mail system, said text server receives identification information to identify said called party, so that said text server can check a first database of individuals able to receive said TTY call to determine whether said called party is in said first database and if said called party is in said first database then said text server signals said called party that said TTY call from said calling party has been made, wherein said private branch exchange is in communication with said text server via a modem and a first communication path extending from said private branch exchange to said modem, said modem in communication with said text server to receive said TTY call routed to said text server by said private branch exchange, said modem recognizes said TTY call as conforming to TTY standards and, if necessary, converts said TTY call into ASCII, said modem also receives a response to said TTY call, converts said response to said TTY call into an appropriate format that conforms to said TTY standards to create a converted response to said TTY call, and transmits said converted response to said TTY call and further wherein if said text server determines that said called party is in said first database, then said text server presents said calling party with a greeting from a mailbox holder in communication with said text server, then said text server prompts said calling party to leave a message, and once said message is left by said calling party, said text server stores said message in memory accessible by said text server.

2. The integrated text based TTY system of claim 1, wherein said TTY device is external to said integrated text based TTY system.

3. The integrated text based TTY system of claim 1, wherein said telephone network is a standard telephone network.

4. The integrated text based TTY system of claim 1, wherein said text server is in communication with said private branch exchange via said voice mail system and said text server is in direct communication with said voice mail system and said voice mail system is in direct communication with said private branch exchange, and further wherein said text server alerts said called party that said TTY call has been made by leaving a second message in said voice mail system.

5. The integrated text based TTY system of claim 1, wherein said identification information is selected from a group consisting of said called party'"'"'s first name, said called party'"'"'s employee number, said called party'"'"'s social security number, said called party'"'"'s computer address, said called party'"'"'s mailbox number, said called party'"'"'s log in name, said called party'"'"'s last name, said called party'"'"'s full name, and said called party'"'"'s individual telephone number.

6. The integrated text based TTY system of claim 1, wherein said voice mail system has a voice mail database of all parties having access to said voice mail system and if said called party is not in said first database, then said text server instructs said voice mail system to check said voice mail database to determine whether said called party is in said voice mail database and if said called party is in said voice mail database, said text server signals said called party that said TTY call has been made.

7. The integrated text based TTY system of claim 1, wherein said voice mail system has a voice mail database of all parties having access to said voice mail system and if said called party is not in said first database, then said text server instructs said voice mail system to check said voice mail database to determine whether said called party is in said voice mail database and further wherein if said called party is in said voice mail database, then said text server presents said calling party with greeting from a mailbox holder;

prompts said calling party to leave a second message, stores said second message left by said calling party in memory accessible by said text server.

8. The integrated text based TTY system of claim 1, wherein if said called party is not in said first database, then said text server instructs said calling party to leave a second message for said called party which will be stored in memory accessible by said text server, then once said calling party leaves said second message, said text server stores said second message in memory accessible by said text server.

9. The integrated text based TTY system of claim 1, wherein said first database is stored in memory accessible by said text server.

10. The integrated text based TTY system of claim 1, wherein said greeting is in a format that is understandable to an individual, said individual selected from a group consisting of a deaf person, speech impaired person, and hard-of-hearing person.

11. The integrated text based TTY system of claim 1, wherein said greeting is in text.

12. The integrated text based TTY system of claim 1, wherein said message also contains instructions to said called party to inform said called party how to retrieve said message.

13. The integrates text based TTY system of claim 1, wherein said text server notifies said called party that said message has been received by lighting a light on a telephone device used by said called party to indicate that said message has been received, said telephone in communication with said voice mail system and said private branch exchange.

14. The integrated text based TTY system of claim 1, further said TTY call has a source format, and wherein said text server has a modem, said modem in communication with said text server and said private branch exchange, said modem determines said source format of said TTY call and matching all response to said format.

15. The integrated text based TTY system of claim 1, wherein said database is comprised of a list of individuals having access to said text server.

16. The integrated text based TTY system of claim 1, wherein said text server also instructs said called party how to receive said TTY call.

17. An integrated text based TTY system, comprising:

(a) a telephone network adapted to receive a TTY call from a calling party using a TTY device to a called party, said TTY call being modem translatable, said TTY call having information disclosing a format of said TTY device being used to initiate said TTY call and identification information identifying said called party;

(b) a private branch exchange in communication with said telephone network and adapted to receive said TTY call from said telephone network;

(c) a voice mail system in communication with said private branch exchange; and

(d) a text server in communication with said private branch exchange via a modem to receive said TTY call, said modem able to receive and identify said TTY call as conforming to TTY standards and able to convert said TTY call to ASCII, said modem also able to receive a response to said TTY call, said modem converts said response to said TTY call to conform to said TTY standards, and said modem transmits said response to said TTY call once converted, said text server also in communication with said voice mail system, said text server receives said identification information to identify said called party, said text server checks a first database of individuals able to receive said TTY call to determine whether said called party is in said first database, and if said called party is in said first database, then said text server leaves a first message in said voice mail system which alerts said called party that said TTY call has been made and further wherein said text server determines whether said called party is in said first database, and if said text server determines that said called party is in said first database, then said text server presents said calling party with a greeting from a mailbox holder in communication with said text server, said text server prompts said calling party to leave a second message, stores said second message in memory accessible by said text server.

18. The integrated text based TTY system of claim 17, wherein said TTY device is external to said integrated text based TTY system and said telephone network is a standard telephone network.

19. The integrated text based TTY system of claim 17, wherein said identification information is selected from a group consisting of said called party'"'"'s first name, said called party'"'"'s employee number, said called party'"'"'s social security number, said called party'"'"'s computer address, said called party'"'"'s mailbox number, said called party'"'"'s log in name, said called party'"'"'s last name, said called party'"'"'s full name, and said called party'"'"'s individual telephone number.

20. The integrated text based TTY system of claim 17, wherein said voice mail system has a voice mail database of all parties having access to said voice mail system and if said called party is not in said first database, then said text server instructs said voice mail system to check said voice mail database to determine whether said called party is in said voice mail database and if said called party is in said voice mail database, then said text server leaves said first message in said voice mail system.

21. The integrated text based TTY system of claim 20, further wherein if said called party is in said voice mail database, then said text server presents said calling party with a greeting, said text server prompts said calling party to leave a third message and once said third message is provided, said text server stores said third message in memory accessible by said text server, and said text server leaves said first message in said voice mail system for said called party.

22. The integrated text based TTY system of claim 20, wherein if said called party is not in said voice mail database, then said TTY call is routed to a general mailbox in said voice mail system.

23. The integrated text based TTY system of claim 21, wherein said greeting is in a format that is understandable to an individual, said individual selected from a deaf person, speech impaired person, and hard-of-hearing person.

24. The integrated text based TTY system of claim 20, wherein said first message also contains instructions to inform said called party how to retrieve said second message.

25. The integrates text based TTY system of claim 20, wherein said text server notifies said called party that said first message has been received by lighting a light on a telephone used by said called party, said telephone in communication with said voice mail system and said private branch exchange.