Answer detection for ip based telephones using passive...

H - Electricity – 04 – M

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

H04M 11/06 (2006.01) H04L 12/66 (2006.01) H04M 1/253 (2006.01) H04M 1/60 (2006.01) H04M 1/82 (2006.01) H04M 7/00 (2006.01)

Patent

CA 2345879

Deactivating a switch in a handset when a user wishes to answer an incoming call or terminate a call. A sound card within a personal computer transmits a hook tone that is above the human hearing range to a transmitter section of the handset. When the switch is in the activated state, the handset re-transmits the hook tone back to the sound card which converts the hook tone to digital information so that the hook tone can be detected by software running in the personal computer. When the manual switch is deactivated, the handset ceases to re-transmit the hook tone back to the sound card. The software detects the absence of the hook tone to determine if the handset is answering the incoming call. In traditional telephony terms, when the manual switch is deactivated, this is the offhook condition. When the manual switch is activated, this is the onhook condition. When the user is finished with the call and activates the manual switch, the handset again starts re- transmitting hook tone that causes the hook tone to be detected by the software via the sound card. Then, the software signals the other party on the call that the call has been terminated. Low-pass filters are utilized in the handset to block the hook tone from the receiver and transmitter sections of the handset. A headset is similarly designed to provide the same switching features as the handset.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Answer detection for ip based telephones using passive... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Answer detection for ip based telephones using passive..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Answer detection for ip based telephones using passive... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1901367

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.