PBX and adjunct using multi-frequency tones for communication therebetween
First Claim
1. A controller for use in a communication system connected to a communication line for receiving incoming calls and connected to an adjunct over a station set communication facility, said controller comprisingmeans responsive to an incoming call addressed to said adjunct received over said line for sending a ringing signal over said station facility to said adjunct andmeans responsive to an off-hook signal from said adjunct for outpulsing over said station facility to said adjunct a plurality of multifrequency tones containing information identifying the type of call to be completed to enable said adjunct to respond to said incoming call, said outpulsing occurring prior to said controller connecting and incoming call to said adjunct.
9 Assignments
0 Petitions
Accused Products
Abstract
A PBX system is responsive to an incoming call which is directed to an adjunct of the system for sending a ringing signal over a station facility to the adjunct. When the adjunct goes off-hook, the system outputs to the adjunct over the station facility multi-frequency tones containing information associated with the incoming call prior to establishing a connection between the adjunct and calling party. The information selects the proper operating mode of the adjunct and provides other call processing information to the adjunct. The adjunct communicates information to the PBX using a switch-hook flash and multi-frequency tones.
110 Citations
20 Claims
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1. A controller for use in a communication system connected to a communication line for receiving incoming calls and connected to an adjunct over a station set communication facility, said controller comprising
means responsive to an incoming call addressed to said adjunct received over said line for sending a ringing signal over said station facility to said adjunct and means responsive to an off-hook signal from said adjunct for outpulsing over said station facility to said adjunct a plurality of multifrequency tones containing information identifying the type of call to be completed to enable said adjunct to respond to said incoming call, said outpulsing occurring prior to said controller connecting and incoming call to said adjunct.
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10. A communication system comprising a controller connected over a station set facility to an adjunct and adapted to receive calls over a communication line, and controller comprising
means responsive to an incoming call to said adjunct received over said line for sending a ringing signal to said adjunct and means responsive to an off-hook signal from said adjunct for outpulsing to said adjunct a plurality of multi-frequency tones containing call information to enable said adjunct to respond to said incoming call, said outpulsing occurring prior to said controller connecting said incoming call to said adjunct; - and
said adjunct including means for receiving said ringing signal indicating said incoming call over said station facility from said system, means for generating an off-hook signal in response to said ringing signal, and means for receiving multi-frequency tones from said system. - View Dependent Claims (11, 12)
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13. An adjunct connected over a voice facility to a communication system and adapted to receive multifrequency tones and output voice signals thereover, said adjunct comprising
means responsive to a ringing signal received over said facility for going off-hook, means operative following said off-hook condition for receiving tones over said facility and interpreting said tones as tones originated by said communication system to identify one of a plurality of operating modes that said adjunct is to operate.
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20. A communication system including a controller and an adjunct, the controller connected to a communication line for receiving incoming calls and connected to the adjunct over a station set communication facility, said system comprising
at said controller means responsive to an incoming call addressed to said adjunct received over said line for sending a ringing signal over said station facility to said adjunct and means responsive to an off-hook signal from said adjunct for outpulsing over said station facility to said adjunct a plurality of multifrequency tones containing information identifying the type of call to be completed to enable said adjunct to respond to said incoming call, said outpulsing occurring prior to said controller connecting said incoming call to said adjunct, and at said adjunct means responsive to said ringing signal for generating an off-hook signal and means operative following said off-hook signal for receiving said tones over said station facility and interpreting said tones as tones originated by said communication system to select one of a plurality of operating modes at said adjunct.
Specification