Abstract: A method for enabling a subscriber terminal to remotely access terminal equipment, the terminal equipment storing identification data of the subscriber terminal, and the subscriber terminal being subscribed to a communication network and to a remote access service, wherein the method includes: receiving a request for authentication from the terminal equipment, the request for authentication including identification data of the subscriber terminal; receiving a request for access to the terminal equipment from the subscriber terminal; authenticating the subscriber terminal based on information from the communications network; forwarding the request for authentication from the terminal equipment to the subscriber terminal upon authenticating the subscriber terminal, the subscriber terminal processing the request for authentication to authenticate the terminal equipment; receiving an authentication notification from the subscriber terminal; forwarding the authentication notification from the subscriber terminal t

Abstract: A method for enabling a subscriber terminal to remotely access terminal equipment, the terminal equipment storing identification data of the subscriber terminal, and the subscriber terminal being subscribed to a communication network and to a remote access service, wherein the method includes: receiving a request for authentication from the terminal equipment, the request for authentication including identification data of the subscriber terminal; receiving a request for access to the terminal equipment from the subscriber terminal; authenticating the subscriber terminal based on information from the communications network; forwarding the request for authentication from the terminal equipment to the subscriber terminal upon authenticating the subscriber terminal, the subscriber terminal processing the request for authentication to authenticate the terminal equipment; receiving an authentication notification from the subscriber terminal; forwarding the authentication notification from the subscriber terminal t

Abstract: A signal receiver at the subscriber end or the exchange end of a telephone line loop, over which messages are transmitted in digitized form by a carrier with four possible phase positions representing as many two-bit combinations or dibits, includes a coherent phase demodulator in which samples of the incoming carrier (converted to a square wave) are logically multiplied with coincident samples of a locally generated reference wave of like or subharmonically related frequency to produce a binary sequence of a configuration depending upon the relative phase.

Abstract: A binary input signal S multiplied by a level-controlling modifier X.sub.n-1 is periodically sampled to determine its amplitude whose value is then differentially combined with a fixed reference value R to produce an error signal. The latter is multiplied by the same modifier X.sub.n-1 and by a fractional coefficient k to yield a corrective value which is then algebraically combined with modifier X.sub.n-1 to produce an updated modifier X.sub.n for the next sampling cycle. To avoid instability, the modified input signal may be subjected to a limitation of its dynamic range before or after sampling. A load to be driven by the input signals may receive the modified signal itself or the modifier used to control its level.