H - Electricity – 04 – M
Patent
H - Electricity
04
M
344/13
H04M 3/42 (2006.01) H04Q 7/20 (2006.01) H04Q 7/38 (2006.01)
Patent
CA 1313246
NE- 193 "CONCENTRATOR SYSTEM WITH POLLING-RESPONSE MEANS FOR DETECTING FAILURES TO STOP TARIFF CHARGES ON LOCALLY ESTABLISHED INTRAOFFICE CALLS" ABSTRACT OF THE DISCLOSURE In a radio concentrator system, a master station and a terminal station cooperate with each to establish connections between remote subscriber terminals and a public switched network though radio message channels. An intraoffice call is set up between first and second subscriber terminals through the connections established in the terminal and master stations via the network. Upon establishment of such an intraoffice call, the terminal and master stations clear their connections and reestablishes local connections in the terminal station between the subscriber terminals. The master station transmits a polling signal at periodic intervals to the termination station, which responds to it by transmitting an acknowledgment signal as long as the local call is in progress. The master station detects if the acknowledgment signal is received in response to the polling signal. End-of-call indication is given to the network when the response is not received for a prescribed time interval to stop the tariff charges on the calling party.
593333
Corporation Nec
Smart & Biggar
LandOfFree
Concentrator system with polling-response means for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Concentrator system with polling-response means for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Concentrator system with polling-response means for... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1169383