US 5,329,523 A · Extension agent system of ISDN electronic exchange

Abstract

An extension agent system of an ISDN electronic exchange having a switching network to which interfaces grouped into groups are connected, wherein extension agent numbers are respectively assigned to the groups of the interfaces and each interface includes a plurality of channels, has a management unit which manages first information indicating, for each interface, the number of channels being used and second information indicating, for each interface, the number of available channels. The management unit includes a table which stores third information indicating, for each of the groups of the interfaces, a sequence of the interfaces to be accessed such that one of the interfaces receives a call having the extension agent number. The system also has a control unit which selects one of the interfaces for receiving a call having the extension agent number on the basis of the first information, the second information and the third information.

Claims18

Dependent claims

An extension agent system of an ISDN electronic exchange having a switching network to which interfaces grouped into groups are connected, extension agent numbers being respectively assigned to said groups, each of the interfaces including a plurality of channels, said extension agent system comprising:

management means including a table and operated for managing first information indicating, for each interface in each group, the number of channels in use, second information indicating, for each interface in each group, the number of available channels, and third information stored in said table and indicating, for each of the groups, a sequence of the interfaces to be accessed so that one of the interfaces receives a call having the extension agent number;
and
control means, operatively coupled to said management means, for comparing the first information with the second information to determine whether or not there is an available channel in an interface to which said first and second information refers and if a channel is available in said interface, said interface receives a call having the extension agent number and, if no channel is available in said interface, said control means selects a next one of the interfaces for receiving a call having the extension agent number on the basis of the third information.

An extension agent system of an ISDN electronic exchange having a switching network to which interfaces grouped into groups are connected, extension agent numbers being respectively assigned to said groups, each of the interface including a plurality of channels of different types, said extension agent system comprising:

management means including a table and operated for managing first information indicating, for each of the different types of channels for each of the interfaces, the number of channels in use, second information indicating, for each of the different types of channels for each of the interfaces, the number of available channels, and third information stored in said table and indicating, for each of the groups in each of the different types of channels, a sequence of the interfaces to be accessed so that one of the interfaces receives a call having the extension agent number;
and
control means, operatively coupled to said management means, for comparing said first information with said second information to determine whether or not there is an available channel in an interface to which said first and second information refer and if a channel is available in said interface, said interface receives a call having the extension agent number and if no channel is available in said interface, said control means selects a next one of the interfaces for receiving a call having the extension agent number on the basis of the third information.

Dependencies are inferred from the claim text.

Extension agent system of ISDN electronic exchange

Life of this patent

Extension agent system of ISDN electronic exchange

Life of this patent

Abstract

Claims18