Telephone-conferencing method and apparatus with monitor-only access

Claim 2

Caller-initiated telephone conferencing apparatus comprising caller-responsive input means for concurrently receiving a plurality of incoming telephone line calls over an associated plurality of incoming telephone lines and including means for responding to a signalling indication on any incoming telephone line for conditioning the line for communication, and switching means responsive to said input means for selectively connecting any of said conditioned incoming lines to any of plural conference groupings wherein any of said incoming lines in a grouping can receive signals from all other incoming lines connected to said grouping and for selectively connecting lines in at least one grouping such that a selected sub-group of the lines only receives messages whereas another sub-group of lines of that grouping both receives and transmits messages.

Claim 3

The telephone conferencing apparatus of claim 1 wherein said switching means comprises first switch means for connecting conditioned incoming-call lines for receiving messages from a grouping of lines, and second switch means for connecting at least some of said conditioned lines for transmitting messages to the same grouping.

Claim 4

The telephone conferencing apparatus of claim 1 wherein said switching means further comprises operator control means having a manually controlled switch element associated with each incoming telephone line and wherein said switch element in a first state places said associated incoming line in said receive-only condition and in a second state places said line in a receive-and-send condition.

Claim 5

Caller-initiated telephone conferencing apparatus comprising caller-responsive input means for concurrently receiving a plurality of incoming telephone line calls addressed to a common telephone number over an associated plurality of incoming telephone lines, and switching means operable at the telephone station of said addressed number for selectively connecting said incoming lines into at least one conference grouping, wherein any incoming line in said grouping can communicate with all other incoming lines of the grouping and for restricting transmission of messages to the grouping from a selected sub-group of one or more of the lines, said switching means providing said interconnecting of each incoming line independently of the interconnection of other incoming lines.

Claim 6

Caller-initiated telephone conferencing apparatus comprising caller-responsive input means for concurrently receiving a plurality of incoming telephone line calls addressed to a common telephone number over an associated plurality of incoming telephone lines, and switching means operable at the telephone station of said addressed number for selectively connecting said incoming lines into at least one conference grouping, wherein any incoming line in said grouping can communicate with all other incoming lines of the grouping and for restricting transmission of messages to the grouping from a selected sub-group of one or more of the lines, said switching means providing said interconnecting of each incoming line independently of the interconnection of other incoming lines.

Claim 7

A caller-initiated telephone conferencing method comprising the steps of concurrently receiving a plurality of incoming telephone line calls over an associated plurality of incoming telephone lines, responding to a caller-initiated signalling indication on any incoming telephone line for conditioning that line for communication, selectively connecting any of said conditioned incoming lines to any of plural conference groupings wherein any incoming line in a grouping can receive signals from all other incoming lines connected to said grouping and only a selected sub-group of the incoming lines in the grouping can transmit to the other lines connected to said grouping, and providing said interconnection of each conditioned line independently of the interconnection of other incoming lines.

Claim 8

A caller-initiated telephone conferencing method comprising the steps of concurrently receiving a plurality of incoming telephone line calls over an associated plurality of incoming telephone lines, responding to a caller-initiated signalling indication on any incoming telephone line for conditioning that line for communication, selectively connecting any of said conditioned incoming lines to any of plural conference groupings wherein any incoming line in a grouping can receive signals from all other incoming lines connected to said grouping and only a selected sub-group of the incoming lines in the grouping can transmit to the other lines connected to said grouping, and providing said interconnection of each conditioned line independently of the interconnection of other incoming lines.

Claim 9

The telephone conferencing method of claim 5 further comprising the step of restricting an incoming line to a receive-only condition.

Claim 10

The telephone conferencing method of claim 6 further comprising the step of manually controlling the transmit state of at least selected incoming lines from an operator control panel.

Claim 11

The telephone conferencing method of claim 5 further comprising the step of manually placing each conditioned incoming line in a first state for providing a receive-only operating condition and alternatively in a second state for providing a receive-and-send operating condition.

Claim 12

Caller-initiated telephone conferencing apparatus comprising caller-responsive input means for concurrently receiving a plurality of incoming telephone line calls from a plurality of callers at different calling numbers over a plurality of incoming telephone lines and including means for responding to a signalling indication on any incoming telephone line for conditioning the line for communication, and switching means responsive at least in part to said input means for connecting each said incoming call to at least one conference grouping wherein any incoming line in said grouping can receive messages from other incoming lines connected to said grouping, and wherein each conference grouping has the capacity of three incoming calls and providing said interconnection of each conditioned line independently of the interconnection of other incoming lines, said switching means further connecting at least selected incoming lines in said grouping for transmitting messages to other lines in said grouping.

Claim 13

Caller-initiated telephone conferencing apparatus comprising caller-responsive input means for concurrently receiving a plurality of incoming telephone line calls from a plurality of callers at different calling numbers over a plurality of incoming telephone lines and including means for responding to a signalling indication on any incoming telephone line for conditioning the line for communication, and switching means responsive at least in part to said input means for connecting each said incoming call to at least one conference grouping wherein any incoming line in said grouping can receive messages from other incoming lines connected to said grouping, and wherein each conference grouping has the capacity of three incoming calls and providing said interconnection of each conditioned line independently of the interconnection of other incoming lines, said switching means further connecting at least selected incoming lines in said grouping for transmitting messages to other lines in said grouping.

Claim 14

Telephone conferencing apparatus comprising input means for concurrently receiving a plurality of incoming telephone-line calls over an associated plurality of incoming telephone lines, switching means for selectively connecting any of said incoming lines to a conference grouping, said switching means being arranged to provide any incoming telephone line in a grouping for receiving signals from all other incoming lines connected to said grouping and to provide selected ones of the lines in a grouping for also transmitting signals to the other lines of that grouping, and wherein said grouping has the capacity of at least three incoming lines, monitor means operatively responsive to incoming signal energy on each incoming line of a grouping for generating electrical incoming voice-indicative report signals distinct from incoming voice communication, and control means arranged for receiving said report signals and arranged for controlling said switching means for the selection of incoming lines for said transmitting of signals.

Claim 15

Telephone conferencing apparatus comprising input means for concurrently receiving a plurality of incoming telephone-line calls over an associated plurality of incoming telephone lines, switching means for selectively connecting any of said incoming lines to a conference grouping, said switching means being arranged to provide any incoming telephone line in a grouping for receiving signals from all other incoming lines connected to said grouping and to provide selected ones of the lines in a grouping for also transmitting signals to the other lines of that grouping, and wherein said grouping has the capacity of at least three incoming lines, monitor means operatively responsive to incoming signal energy on each incoming line of a grouping for generating electrical incoming voice-indicative report signals distinct from incoming voice communication, and control means arranged for receiving said report signals and arranged for controlling said switching means for the selection of incoming lines for said transmitting of signals.

Claim 16

Caller-initiated telephone conferencing apparatus comprising caller-responsive input means for concurrently receiving a plurality of incoming calls over an associated plurality of incoming telephone lines and including means for responding to a signaling indication on any incoming telephone line for conditioning that line for conference communication, switching means responsive to said input means for selectively connecting any of said conditioned incoming lines to at least one conference grouping wherein any incoming lines in said grouping can receive signals from all other incoming lines of said grouping and wherein said grouping has the capacity of at least three incoming lines, said switching means further connecting lines in said grouping such that a selected sub-group of the lines of that grouping only receives messages whereas another sub-group of the lines of that grouping both receives and transmits messages, monitor means operatively responsive to incoming signal energy on each incoming line of said conference grouping for generating electrical report signals distinct from incoming communication and indicating at least which of said lines carries incoming communication, and control means for receiving said report signals and for controlling said switching means for the selection of incoming lines of a grouping that transmit messages.

Claim 17

Caller-initiated telephone conferencing apparatus comprising caller-responsive input means for concurrently receiving a plurality of incoming calls over an associated plurality of incoming telephone lines and including means for responding to a signaling indication on any incoming telephone line for conditioning that line for conference communication, switching means responsive to said input means for selectively connecting any of said conditioned incoming lines to at least one conference grouping wherein any incoming lines in said grouping can receive signals from all other incoming lines of said grouping and wherein said grouping has the capacity of at least three incoming lines, said switching means further connecting lines in said grouping such that a selected sub-group of the lines of that grouping only receives messages whereas another sub-group of the lines of that grouping both receives and transmits messages, monitor means operatively responsive to incoming signal energy on each incoming line of said conference grouping for generating electrical report signals distinct from incoming communication and indicating at least which of said lines carries incoming communication, and control means for receiving said report signals and for controlling said switching means for the selection of incoming lines of a grouping that transmit messages.

Claim 18

Telephone conferencing apparatus according to claim 11 wherein said switching means comprises first switch means for connecting conditioned incoming lines for receiving messages from a grouping of lines, and second switch means for connecting at least some of said conditioned lines of that grouping for transmitting messages to said grouping.

Claim 19

Caller-initiated telephone conferencing apparatus comprising caller-responsive input means for concurrently receiving a plurality of incoming calls from a plurality of callers at different calling numbers over a plurality of incoming telephone lines and including means for responding to a signaling indication on any incoming line for conditioning the line for communication, switching means responsive at least in part to said input means for connecting each said conditioned incoming line to at least one conference grouping wherein any incoming line in said grouping can receive messages from other incoming lines connected to said grouping, and wherein each conference grouping has the capacity of at least three incoming lines, said switching means further connecting at least selected incoming lines in said grouping for also transmitting messages to said other lines in said grouping, monitor means responsive to incoming signal energy on each incoming line of a grouping for generating electrical report signals distinct from incoming communication and indicating which of said lines carries incoming communication, and control means for receiving said report signals and for controlling said switching means for said further connection of selected incoming lines for said transmitting of messages to other lines in said grouping.

Claim 20

Caller-initiated telephone conferencing apparatus comprising caller-responsive input means for concurrently receiving a plurality of incoming calls from a plurality of callers at different calling numbers over a plurality of incoming telephone lines and including means for responding to a signaling indication on any incoming line for conditioning the line for communication, switching means responsive at least in part to said input means for connecting each said conditioned incoming line to at least one conference grouping wherein any incoming line in said grouping can receive messages from other incoming lines connected to said grouping, and wherein each conference grouping has the capacity of at least three incoming lines, said switching means further connecting at least selected incoming lines in said grouping for also transmitting messages to said other lines in said grouping, monitor means responsive to incoming signal energy on each incoming line of a grouping for generating electrical report signals distinct from incoming communication and indicating which of said lines carries incoming communication, and control means for receiving said report signals and for controlling said switching means for said further connection of selected incoming lines for said transmitting of messages to other lines in said grouping.

Claim 21

Caller-initiated telephone conferencing apparatus comprising caller-responsive input means for concurrently receiving a plurality of incoming calls over an associated plurality of incoming telephone lines, said input means including a plurality of telephone circuits, each having a transmit line and a receive line and each further having means for providing on said transmit line a transmit signal corresponding to the analog voice band signal energy which one said incoming telephone line presents to said apparatus, and for transferring analog voice-band signal energy on said receive line to said associated telephone line, switch means for connecting said lines associated with said incoming telephone line calls to at least one conference grouping wherein any associated incoming telephone line in a grouping provides communication with other telephone lines in said grouping in such a manner that the analog signal energy on each receive line is responsive to transmit signal energy on other lines in said grouping, and wherein said grouping has the capacity of at least three incoming calls, monitor means associated with each incoming telephone line and operatively connected to the associated transmit and receive lines for providing a report signal in response to a selected level of analog signal energy associated with a transmit line relative to analog signal energy associated with a corresponding receive line, and control means for receiving said report signals and for controlling said switch means to provide selected lines of a conference grouping with transmit communication relative to other lines in that grouping.

Claim 22

Caller-initiated telephone conferencing apparatus comprising caller-responsive input means for concurrently receiving a plurality of incoming calls over an associated plurality of incoming telephone lines, said input means including a plurality of telephone circuits, each having a transmit line and a receive line and each further having means for providing on said transmit line a transmit signal corresponding to the analog voice band signal energy which one said incoming telephone line presents to said apparatus, and for transferring analog voice-band signal energy on said receive line to said associated telephone line, switch means for connecting said lines associated with said incoming telephone line calls to at least one conference grouping wherein any associated incoming telephone line in a grouping provides communication with other telephone lines in said grouping in such a manner that the analog signal energy on each receive line is responsive to transmit signal energy on other lines in said grouping, and wherein said grouping has the capacity of at least three incoming calls, monitor means associated with each incoming telephone line and operatively connected to the associated transmit and receive lines for providing a report signal in response to a selected level of analog signal energy associated with a transmit line relative to analog signal energy associated with a corresponding receive line, and control means for receiving said report signals and for controlling said switch means to provide selected lines of a conference grouping with transmit communication relative to other lines in that grouping.

Claim 23

A caller-initiated telephone conferencing method comprising the steps of concurrently receiving a plurality of incoming calls over an associated plurality of incoming telephone lines, responding to a caller-initiated signaling indication on any incoming line for conditioning that line for communication, selectively connecting any of said conditioned incoming lines to a conference grouping wherein any incoming line in a grouping can receive signals from all other incoming lines connected to said grouping and only a selected sub-group of the incoming lines in the grouping can transmit to the other lines connected to said grouping, and wherein said conference grouping has the capacity of at least three incoming calls, generating electrical incoming voice-indicative report signals responsive to incoming signal energy on each incoming line of a grouping, said report signals being distinct from incoming voice communication, and controlling said switching means to provide said transmitting of signals with control means arranged for receiving said report signals.

Claim 24

A caller-initiated telephone conferencing method comprising the steps of concurrently receiving a plurality of incoming calls over an associated plurality of incoming telephone lines, responding to a caller-initiated signaling indication on any incoming line for conditioning that line for communication, selectively connecting any of said conditioned incoming lines to a conference grouping wherein any incoming line in a grouping can receive signals from all other incoming lines connected to said grouping and only a selected sub-group of the incoming lines in the grouping can transmit to the other lines connected to said grouping, and wherein said conference grouping has the capacity of at least three incoming calls, generating electrical incoming voice-indicative report signals responsive to incoming signal energy on each incoming line of a grouping, said report signals being distinct from incoming voice communication, and controlling said switching means to provide said transmitting of signals with control means arranged for receiving said report signals.

Claim 25

A telephone conferencing method comprising the steps of concurrently receiving a plurality of incoming telephone-line calls over an associated plurality of incoming telephone lines and responding to a caller-initiated signaling indication on any incoming line for conditioning that line for conference communication, connecting the lines associated with said incoming calls to at least one conference grouping in response to said receiving and responding step and wherein any associated incoming line in the grouping provides receive communication with other lines in said grouping and wherein said conference grouping has the capacity of at least three incoming calls, generating electrical report signals in response to incoming signal energy on said respective lines for indicating at least which of said lines carries incoming communication signals, said report signals being distinct from incoming communication, and providing selected lines of said conference grouping for transmitting communication with other lines of said grouping.

Claim 26

A telephone conferencing method comprising the steps of concurrently receiving a plurality of incoming telephone-line calls over an associated plurality of incoming telephone lines and responding to a caller-initiated signaling indication on any incoming line for conditioning that line for conference communication, connecting the lines associated with said incoming calls to at least one conference grouping in response to said receiving and responding step and wherein any associated incoming line in the grouping provides receive communication with other lines in said grouping and wherein said conference grouping has the capacity of at least three incoming calls, generating electrical report signals in response to incoming signal energy on said respective lines for indicating at least which of said lines carries incoming communication signals, said report signals being distinct from incoming communication, and providing selected lines of said conference grouping for transmitting communication with other lines of said grouping.