Digital wireless telephone system interface for analog telecommunications equipment

• US 5,864,763 A
• Filed: 09/24/1996
• Issued: 01/26/1999
• Est. Priority Date: 09/24/1996
• Status: Expired due to Term

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Leung, Nikolai K. N., Grob, Matthew S., John, Johnny K., Faus, Juan
• Primary Examiner(s): Wolfe, Willis R.
• Assistant Examiner(s): Vo, Hieu T.
• Application Number:
  US08/719,112
• Time in Patent Office: 854 Days
• Field of Search: 455/422, 455/74, 455/74.1, 455/552, 455/556, 455/557, 379/100.01, 379/100.09, 379/100.13, 379/100.15, 358/425, 358/434, 370/335, 370/342
• US Class Current: 455/557
• CPC Class Codes: H04M 11/06 Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

A novel and improved method and apparatus for providing an interface to a digital wireless telephone system compatible with standard analog wire line telephones, analog wire line fax machines, and computer modems is described. At the start of a telephone call, a data pump interprets the digits dialed, and if a first set of digits are received a control system configures the data pump for processing analog fax data. If a second set of digits are received, the control system configures the data pump for processing analog computer modem data. If a telephone number is received, the control system configures the interface system to pass additional data to a vocoder which encodes any digitized audio information received.

Claims

1. A digital wireless telephone system that can be used with analog fax machines, analog computer modems, and analog telephones, comprising:

means for converting tones into digital data; and

means, coupled to said means for converting, for configuring said means for converting to convert number tones into digital numbers, to convert fax tones into digital data if a fax indicator is received over the air, and to convert data tones into digital data if a data indicator is received over the air.

2. The digital wireless telephone system as set forth in claim 1 further comprising:

CDMA processing means for receiving said fax indicator and said data indictator, and for transmitting said digital numbers.

3. The digital wireless telephone system as set forth in claim 2 further comprising:

switching center means for transmitting said fax indicator if said digital numbers contains a fax code, and for transmitting said data indicator if said digital numbers contains a data code.

4. The digital wireless telephone system as set forth in claim 1 further comprising a means for converting PCM formatted data into digital samples.

5. An analog interface to a digital wireless telephone system that can be used with analog fax machines, analog computer modems, and analog telephones, comprising:

a data-fax pump for converting digital samples into digital data; and

a control system coupled to said data-fax pump for configuring said data-fax pump to convert telephone digits into digital data, to convert data tones into digital data if a data code indicator is received from said digital wireless telephone system, and to convert fax tones into digital data if a fax code indicator is received from said digital wireless telephone system.

6. The analog interface as set forth in claim 5 wherein said control system is further for configuring a vocoder to convert analog audio data into digital data.

7. The analog interface as set forth in claim 5 further comprising:

CDMA processing system for converting said digital data into CDMA signals, and for converting received CDMA signals into received digital data; and

RF processing unit for transmitting said CDMA signals and for converting received RF signals into said received CDMA signals.

8. The analog interface as set forth in claim 7 wherein said fax code indicator and said data code indicator are received via said received RF signals.

9. A method for providing an analog interface to a digital wireless telephone system that can be used with analog fax machines, analog computer modems, and analog telephones, comprising the steps of:

a) receiving a set of telephone number digits;

b) determining whether a fax code is received from the digital wireless telephone system with the set of telephone number digits, whether a data code is received from the digital wireless telephone system with the set of telephone number digits, or whether no code is received from the digital wireless telephone system with the set of telephone number digits;

c) performing fax tone processing if a fax code is received; and

d) performing data tone processing if a data code is received.

10. The method as set forth in claim 9 further comprising the step of:

e) performing vocoding if no code is received.

11. The method as set forth in claim 9 wherein step c) is comprised of the step of:

converting fax tones into digital data.

12. The method as set forth in claim 9 wherein step d) is comprised of the step of:

converting data tones into digital data.

13. The method as set forth in claim 9 further comprising the step of:

waiting until a complete telephone number is entered before performing steps c) and d).