H - Electricity – 04 – M
Patent
H - Electricity
04
M
354/35, 344/31.1
H04M 15/00 (2006.01) G06F 11/20 (2006.01) H04M 15/04 (2006.01)
Patent
CA 1073547
RECORDER TRANSFER ARRANGEMENT MAINTAINING BILLING DATA CONTINUITY Abstract of the Disclosure Redundant but independently operable data processors called encoders are arranged so that control of a particular recorder gathering billing data in a telephone switching sys- tem can be transferred while maintaining billing continuity for calls being handled by that recorder. More specifically, each encoder checks the validity of billing information re- ceived from each recorder. However, each encoder only trans- mits billing data pertaining to a designated group of recor- ders to a remote processor. When an encoder detects that it is not receiving valid data from one of its designated recor- ders, the control of only that designated recorder is trans- ferred to the other encoder if the other encoder indicates that it is receiving valid data from that recorder. More- over, the relinquishing encoder sends a message to the remote processor indicating that it is giving up control of the de- signated recorder, while the accepting encoder inhibits the transmission of information to the remote processor for a predetermined time interval and then transmits a message in- dicating that it has accepted control of the designated recor- der. This delay ensures that the remote processor will receive the relinquish message before the acceptance message so that the continuity of processing billing data for calls handled by the designated recorder can be maintained.
265334
Curtis Robert B.
Riedel Nelson A.
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