Abstract: In a method of routing a call to a wireless telephone service subscriber entitled to the call routing service, the subscriber is assigned a numbering plan number. The number of the nearest fixed station is determined. The number of the nearest fixed station is written into the database of a service control point serving the subscriber. For each call to be routed, the nearest fixed station number is read from the database of the service control point. A word identifying the telephone is then sent to the fixed station designated by the nearest fixed station number. This fixed station then sends at least one call message containing the word identifying the telephone of the subscriber and the number of the fixed station. The call message is received by the telephone of the subscriber, the word identifying that telephone is recognized and the subscriber is alerted.

Abstract: In a wireless telephone service access method a caller is authenticated by: storing and keeping up to date in service control point databases words identifying each subscription and the corresponding telephone and a secret key; transmitting from the caller's telephone to a service control point words identifying the subscription and the caller's telephone; determining in the caller's telephone a first signature using the secret key and a random number; transmitting the first signature to said service control point over the user to user signaling channel; determining in said service control point a second signature using the secret key and said random number; verifying in said service control point that: the first and second signatures are identical; the word identifying the caller's subscription represents a valid subscription; and the word identifying the caller's subscription matches the word identifying the caller's telephone.

Abstract: The cordless telephone service or "telepoint" access network comprises a distribution network constituted by cordless telephones and base stations connected by cable to the switched network, together with a service control point network including network service control points each having a subscriber data base and acting to authenticate calling subscribers, to set up calls, to localize subscribers at their own request, and to set up incoming calls. The service control point network further including a managing service control point for controlling the data bases and for providing commercial management of the service. The managing service control point is connected to the network service control points which are in turn connected to the switched network, and each base station is connected to the switched integrated services network via a 2B+D or 30B+D type channel.

Abstract: Controls are provided for a space-division switching network with relay crosspoint matrices, each crosspoint having four switching coils or windings. A crosspoint relay is switched when two pairs of pulses are provided simultaneously, one pulse to each winding. The switch control arrangement (called the selection unit) for each row and column conductor includes two thyristors, one at each end of the row or column with rows and columns being paired, the pairing being with columns or rows in other planes of the stage.