Telephonic communications – With usage measurement – Call traffic recording or monitoring
Patent
1996-06-28
1998-10-20
Kuntz, Curtis A.
Telephonic communications
With usage measurement
Call traffic recording or monitoring
379113, 379133, 379137, 379 9203, 37910608, H04M 1500
Patent
active
058258612
ABSTRACT:
In a telecommunications network of the kind which handles non-time-critical calls (NTCC) in addition to normal telephony, a congestion indication is transmitted to NTCC transmitting platforms if volume and/or rate limit for a particular communications route or switch is exceeded. Transmitting platforms (9,10,11) establish a transmission rate based on a gapping ration (GR). On receipt of a congestion signal the platforms calculate and Inter call delay based on a random number multiplied by a weighting factor determined from the current value of GR. This provides a period during which calls are not attempted after which GR is adjusted using a common ratio to provide a higher value of GR thus transmission rate (or the rate at which calls are offered) to the congestion route is less onerous. Consecutive call failures result in a rapid increase in the value of GR leading to longer ICDs (to allow the congested route/switch to recover) and a lower traffic loading on recovery. Further, multiple transmitting platforms resume sending at different times due to randomisation of ICD's across platforms.
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British Telecommunications PLC
Kuntz Curtis A.
Tieu Binh K.
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