Busy or unreachable mobile phone availability via SMS
Original Publication Date: 2001-Oct-01
Included in the Prior Art Database: 2003-Jul-23
It is a common occurrence for an individual to try and call another individual on the telephone but be unable to get through, i.e., to have progress to the point where the destination telephone is ringing. A com- mon situation is when the destination number is busy. For standard wired telephone numbers, this is gener- ally the only reason why a call cannot be completed. For cellular telephones, however, the situation is more complex. In addition to simply being busy, a very significant percentage of cellular phones are normally unavail- able. A cellular telephone can be unavailable for many reasons including that the telephone is off, the battery is exhausted, the telephone is out of range or cannot receive a sufficiently strong signal and the telephone can still be unavailable due to a lack of available channels within the given cells.
Information / Kommunikation
Busy or unreachable mobile phoneavailability via SMS
Idee: Jonathan Eyal Gardi, DK-Aalborg
It is a common occurrence for an individual to try andcall another individual on the telephone but be unableto� get� through,� i.e.,� to� have� progress� to� the pointwhere the destination telephone is ringing. A com-mon situation is when the destination number is busy.For standard wired telephone numbers, this is gener-ally the only reason why a call cannot be completed.For� cellular� telephones,� however,� the situation ismore complex.
In addition to simply being busy, a very significantpercentage of cellular phones are normally unavail-able.� A� cellular� telephone� can� be unavailable formany reasons including that the telephone is off, thebattery is exhausted, the telephone is out of range orcannot receive a sufficiently� strong� signal� and� thetelephone can still be unavailable due to a lack ofavailable channels within the given cells.
Redialing is possible but is active for a limited timeperiod, takes network resources and battery power.During the� redial� some� options� (if� not� all)� of� thecalling phone� are� disabled� (for� example� no� newphone call can be made to another number, and whileactually dialing, no incoming calls can be received).Voice mail is sometimes possible but then the reply isinitiated from the user of� the� called� phone� who� ischarged for it.
In such a case, when the called phone is turned off,unreachable or busy, a simple...