IP Library Granted Patent US 8,335,308
Granted Patent B2
US 8,335,308 · App. 11/981,065 · Granted Dec 18, 2012

Method, system, and apparatus for attenuating dual-tone multiple frequency confirmation tones in a telephone set

Assignee: CenturyLink Intellectual Property LLC
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Quick Facts
Patent No.
US 8,335,308
App. No.
11/981,065
Granted
Dec 18, 2012
Kind
B2
Abstract

A method, system, and apparatus for attenuating a dialing confirmation tone includes receiving an enable signal from a tactile user input device, generating at least one dual-tone multiple frequency (DTMF) tone, and communicating the at least one DTMF tone to a telephone line. The method further includes attenuating a signal level of the at least one DTMF tone by a predetermined amount to produce at least one attenuated dialing confirmation tone in response to receiving the enable signal, and communicating the at least one attenuated dialing confirmation tone to an audio output device.

Claims (56)

1. A method for attenuating a dialing confirmation tone comprising:

receiving, at a telephone, a first key sequence from a user on a keypad of the telephone;

entering a program mode in response to receiving the first key sequence;

receiving, at the telephone, an enable signal comprising a second key sequence while in the program mode;

enabling a dual-tone multiple frequency (DTMF) attenuation mode in response to receiving the enable signal;

receiving a third key sequence from the user on the keypad of the telephone, the third key sequence initiating a telephone call;

generating at least one DTMF tone in response to the third key sequence;

communicating the at least one DTMF tone to a telephone line;

attenuating, in response to enabling the DTMF attenuation mode, a signal level of the at least one DTMF tone by a predetermined amount to produce at least one attenuated dialing confirmation tone;

communicating the at least one attenuated dialing confirmation tone to an audio output device in communication with the tactile user input device; and

after the telephone call is disconnected, automatically returning to a default mode in which DTMF tones are not attenuated.

2. The method of claim 1 , further comprising:

receiving a disable signal from the tactile user input device; and

mute the at least one DTMF tone to the audio output device while still providing the at least one DTMF tone to the telephone line.

3. The method of claim 1 , wherein the at least one DTMF tone is muted in response to a selection of a dedicated key by a user.

4. The method of claim 1 , wherein communicating the at least one DTMF tone to a telephone line includes communicating an analog signal over an analog telephone line, and wherein the signal level returns to a default signal level once a call associated with communicating the at least one DTMF tone to a telephone line has ended.

5. The method of claim 1 , wherein communicating the at least one attenuated dialing confirmation tone to the audio output device includes communicating the at least one attenuated dialing confirmation tone to the audio output device of a telephone set.

6. The method of claim 1 , wherein attenuating the signal level by a predetermined amount includes attenuating the signal by at least 50dB.

7. The method of claim 1 , further comprising:

displaying an attenuation indicator, the attenuation indicator indicating to a user that attenuation of at least one DTMF tone is being performed, wherein the predetermined amount was previously set by the user.

8. An apparatus for attenuating a dialing confirmation tone comprising:

a dialing tone generator configured to:

generate at least one dual-tone multiple frequency (DTMF) tone; and

provide the at least one DTMF tone to a telephoned to initiate a telephone call;

a confirmation tone attenuator configured, in a first mode of operation, to:

receive a first key sequence from a user on a keypad;

enter a program mode in response to receiving the first key sequence;

receive an enable signal comprising a second key sequence while in the program mode:

enable a DTMF attenuation mode in response to receiving the enable signal;

attenuate, in response to enabling the DTMF attenuation mode; a signal level of the at least one DTMF tone by a predetermined amount to produce at least one attenuated dialing confirmation tone in response to receiving the enable signal;

provide the at least one attenuated dialing confirmation tone to an audio output device; and

after the telephone call is disconnected, automatically return to a default mode in which DTMF tones are not attenuated.

9. The apparatus of claim 8 , wherein the confirmation tone attenuator is further configured, in a second mode of operation, to:

receive a disable signal from the tactile user input device; and

mute the at least one DTMF tone to the audio output device while still providing the at least one DTMF tone to the telephone line.

10. The apparatus of claim 8 , wherein the telephone line is an analog telephone line, and wherein the signal level returns to a default signal level once a call associated with communicating the at least one DTMF tone to a telephone line has ended.

11. The apparatus of claim 8 , further comprising an attenuation indicator to indicate to a user that attenuation of at least one DTMF tone is being performed, wherein the predetermined amount was previously set by the user.

12. The apparatus of claim 8 , wherein the audio output device includes an earpiece of a telephone set.

13. The apparatus of claim 8 , wherein the predetermined amount of attenuation is at least 50dB.

14. The apparatus of claim 8 , wherein the apparatus is a telephone set, and wherein the predetermined amount of attenuation is set by the user.

15. A computer usable program product in a non-transitory computer readable medium storing computer executable instructions for attenuating a dialing confirmation tone that, when executed, cause at least one processor to:

receive a first key sequence from a user on a keypad;

enter a program mode in response to receiving the first key sequence;

receive an enable signal comprising a second key sequence while in the program mode;

enable a dual-tone multiple frequency (DTMF) attenuation mode in response to receiving the enable signal;

receiving a third key sequence from the user, the third key sequence initiating a telephone call;

generate at least one DTMF tone in response to the third key sequence;

provide the at least one DTMF tone to a telephone line;

attenuate a signal level of the at least one DTMF tone by a predetermined amount to produce at least one attenuated dialing confirmation tone in response to receiving the enable signal;

provide the at least one attenuated dialing confirmation tone to said user via an audio output device; and

after the telephone call is disconnected, automatically return to a default mode in which DTMF tones are not attenuated.

16. The computer usable program product of claim 15 , wherein the executable instructions further cause the at least one processor to:

receive a disable signal from the tactile user input device; and

mute the at least one DTMF tone to the audio output device while still providing the at least one DTMF tone to the telephone line.

17. The computer usable program product of claim 15 , wherein the executable instructions further cause the at least one processor to display an indicator of attenuation being performed on the at least one DTMF tone, and wherein the predetermined amount was previously set by the user.

18. The computer usable program product of claim 15 , wherein the predetermined amount of attenuation is at least 50dB, and wherein the signal level returns to a default signal level once a call associated with communicating the at least one DTMF tone to a telephone line has ended.

Assignments (2)
CHANGE OF NAME Recorded Nov 14, 2012
From: EMBARQ HOLDINGS COMPANY, LLC
To: CENTURYLINK INTELLECTUAL PROPERTY LLC
Reel/Frame 029300/0351 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 31, 2007
From: RAY, AMAR N.
To: EMBARQ HOLDING COMAPNY LLC
Reel/Frame 020114/0362 →
Continuity (1)
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