Industry
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CPC
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H04Q3/00
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H04Q3/0004using crossbar selectors in the switching stages
H04Q3/0008using relay selectors in the switching stages
H04Q3/0012in which the relays are arranged in a matrix configuration
H04Q3/0016Arrangements providing connection between exchanges
H04Q3/002Details
H04Q3/0025Provisions for signalling
H04Q3/0029Provisions for intelligent networking
H04Q3/0033customer-controlled
H04Q3/0037involving call modelling techniques
H04Q3/0041involving techniques for avoiding interaction of call service features
H04Q3/0045involving hybrid
H04Q3/005Personal communications services
H04Q3/0054Service creation techniques
H04Q3/0058using service-independent building blocks (SIBBs) or "primitives"
H04Q3/0062Provisions for network management
H04Q3/0066Bandwidth allocation or management
H04Q3/007customer-controlled
H04Q3/0075Fault management techniques
H04Q3/0079involving restoration of networks
H04Q3/0083Network planning or design; Modelling of planned or existing networks
H04Q3/0087Network testing or monitoring arrangements
H04Q3/0091Congestion or overload control
H04Q3/0095Specification, development or application of network management software
H04Q3/02Circuit arrangements for selectors responsive to a permutation code
H04Q3/04Circuit arrangements for receivers of routing digits
H04Q3/06for group or trunk group selectors
H04Q3/08for local or long-distance selectors
H04Q3/10for PBX selectors
H04Q3/12for line selectors providing transfer of routing digits
H04Q3/14for two-way operation selectors
H04Q3/16for marking-switches
H04Q3/18Circuit arrangements for first stage of hunting switching
H04Q3/20for preselectors
H04Q3/22comprising common calling and disconnecting circuit
H04Q3/24for line finders
H04Q3/26comprising common calling and disconnecting circuit
H04Q3/28comprising main groups and subgroups
H04Q3/30Selector finders
H04Q3/32Circuit arrangements for second or subsequent stages of hunting switching
H04Q3/34for the second preselection stage
H04Q3/36for the second line-finder stage
H04Q3/38for stages after the group selector stage
H04Q3/40for stages after the line selector
H04Q3/42Circuit arrangements for indirect selecting controlled by common circuits
H04Q3/44using revertive control
H04Q3/46using signals other than revertive impulses
H04Q3/47using translators
H04Q3/48using markers
H04Q3/49for end-to-end marking
H04Q3/495for routing connecting paths
H04Q3/52using static devices in switching stages
H04Q3/521using semiconductors in the switching stages
H04Q3/523Details
H04Q3/525using tubes in the switching stages
H04Q3/526Optical switching systems
H04Q3/528Details
H04Q3/54in which the logic circuitry controlling the exchange is centralised
H04Q3/542Logic circuits or arrangements therefor
H04Q3/545using a stored programme
H04Q3/54508Configuration, initialization
H04Q3/54516Initialization, software or data downloading
H04Q3/54525Features introduction
H04Q3/54533Configuration data, translation, passwords, databases
H04Q3/54541using multi-processor systems
H04Q3/5455Multi-processor, parallelism, distributed systems
H04Q3/54558Redundancy, stand-by
H04Q3/54566Intelligent peripherals, adjunct processors
H04Q3/54575Software application
H04Q3/54583Software development
H04Q3/54591Supervision
H04Q3/55using wired logic circuitry
H04Q3/552Wired circuits or arrangements therefor
H04Q3/555being comprised by electro-magnetic devices
H04Q3/56in which the control signals are multiplexed
H04Q3/58Arrangements providing connection between main exchange and sub-exchange or satellite
H04Q3/60for connecting to satellites or concentrators which connect one or more exchange lines with a group of local lines
H04Q3/602Circuit arrangements therefor
H04Q3/605Arrangements in the satellite or concentrator
H04Q3/607Details
H04Q3/62for connecting to private branch exchanges
H04Q3/622Circuit arrangements therefor
H04Q3/625Arrangements in the private branch exchange
H04Q3/627Details
H04Q3/64Distributing or queueing
H04Q3/645Circuit arrangements therefor
H04Q3/66Traffic distributors
H04Q3/665Circuit arrangements therefor
H04Q3/68Grouping or interlacing selector groups or stages
H04Q3/685Circuit arrangements therefor
H04Q3/70Identification of class of calling subscriber
H04Q3/72Finding out and indicating number of calling subscriber
H04Q3/74Identification of subscriber calling from a party-line
H04Q3/76Translation from the called subscriber's number to the outgoing or incoming control information
H04Q3/78Temporary storage of information of calling or called subscriber