Detection and prevention of unintentional pulse dialing
Methods, systems and apparatuses can be used to detect and prevent invalid or unwanted pulses. In various implementations, pulse information received from a telephony device can be used to identify a duration associated with the pulse. Based upon the duration, a determination can be made whether the pulse is invalid.
1. A computer-implemented method, comprising:
receiving a first pulse from a telephony device;
receiving a second pulse from the telephony device;
measuring a period of time between the first and second pulses received from the telephony device;
determining whether the first and second pulses are valid based upon the period of time between the first and second pulses; and
identifying the pulse as an autodialing event based upon the determination.
2. The computer-implemented method of claim 1 , further comprising:
comparing the period of time to a predetermined amount of time; and
if the period of time is greater than the predetermined amount of time, identifying the second pulse as a new digit.
3. The computer-implemented method of claim 2 , further comprising:
if the period of time is less than the predetermined amount of time, comparing the period of time to a valid range of times; and
if the period of time is within the valid range of times, identifying the first and second pulses as valid pulses that are part of the same digit;
if the period of time is not within the valid range of times, signaling the autodialing event.
4. The computer-implemented method of claim 3 , further comprising identifying the valid range of times based upon variability of offhook durations between valid dial pulses.
5. The computer-implemented method of claim 4 , wherein the valid range of times is identified as a percentage variation from a function of previous valid durations between valid dial pulses.
6. The computer-implemented method of claim 1 , wherein the first and second pulses are caused by an onhook signal and the period of time between the first and second pulses is caused by an offhook condition.
7. The computer-implemented method of claim 1 , further comprising storing the autodialing event to a data store for analysis.
8. The computer-implemented method of claim 1 , further comprising sending notification to a central server based upon identification of the autodialing event.
9. The computer-implemented method of claim 1 , wherein the method is performed by a media terminal adapter.
10. The computer-implemented method of claim 1 , further comprising suppressing autodialing events from being passed onto a network.
11. The computer-implemented method of claim 10 , wherein the network is a hybrid fiber-cable network or a public-switched telephone network.
12. The computer-implemented method of claim 1 , further comprising identifying the first pulse or the second pulse as a valid dial pulse if the pulse is between about 10 milliseconds and 100 milliseconds in duration.
13. The computer-implemented method of claim 1 , further comprising identifying the first pulse or the second pulse as a valid hook flash if the pulse is between about 300 milliseconds and 700 milliseconds.
14. One or more computer-readable media having instructions stored thereon, the one or more computer readable media, when executed by a processor, causing the processor to perform operations comprising:
receiving a first pulse from a telephony device;
receiving a second pulse from the telephony device;
measuring the period of time between the first and second pulses received from the telephony device;
determining whether the first and second pulses are valid based upon the period of time between the first and second pulses;
identifying the pulse as an autodialing event based upon the determination.
15. The one or more computer readable media of claim 14 , further operable to cause the processor to perform operations comprising:
comparing the period of time to a predetermined amount of time; and
if the period of time is greater than the predetermined amount of time, identifying the second pulse as a new digit.
16. The one or more computer readable media of claim 15 , further operable to cause the processor to perform operations comprising:
if the period of time is less than the predetermined amount of time, comparing the period of time to a valid range of times; and
if the period of time is within the valid range of times, identifying the first and second pulses as valid pulses that are part of the same digit;
if the period of time is not within the valid range of times, signaling the autodialing event.
17. The one or more computer readable media of claim 16 , further operable to cause the processor to perform an operation comprising identifying the valid range of times based upon variability of offhook durations between valid dial pulses.
18. The one or more computer readable media of claim 17 , wherein the valid range of times is identified as a percentage variation from a function of previous valid durations between valid dial pulses.
19. A system, comprising:
a communication interface operable to receive incoming communication signals and output outgoing communication signals;
a system data store capable of storing incoming and outgoing communications and instructions associated with one or more processing elements; and
a system processor in communication with the system data store and the communication interface, wherein the system processor is operable to execute instructions associated with the one or more processing elements to perform operations comprising:
receiving a first pulse from a telephony device;
receiving a second pulse from the telephony device;
measuring the period of time between the first and second pulses received from the telephony device;
comparing the period of time between the first and second pulses to one or more valid durations between valid dial pulses previously sent from the telephony device;
determining whether the first and second pulses are valid based upon the period of time between the first and second pulses and the comparison of the period of time between the first and second pulses to the one or more valid durations between valid dial pulses previously sent from the telephony device; and
identifying the pulse as an autodialing event based upon the determination.
20. A computer-implemented method, comprising:
receiving two or more valid dial pulses at a network device;
identifying an irregular spread between consecutive dial pulses from the two or more valid dial pulses by comparing the spread to previous valid dial pulses having regular spreads;
signaling an autodialing event based upon identification of an irregular spread between the two or more dial pulses.