Telefonaktiebolaget Lm Ericsson (publ)

Mats C Olstedt

Lars-Goran Petersen

Juho Arras

A telecommunication system has a sending entity, a receiving entity, and an ATM link between the sending and receiving entities for transferring ATM cells on specific separate ATM connections. The ATM cells include user ATM cells having a header and payload containing data in the form of a determined number of data units which carry data in microcells. The header includes an ATM connection pointer. The microcells have payload for carrying a variable size user data package and a microcell header containing code identifying a microcell connection. A microcell unable to fit in its entirety in a remaining space of an ATM cell belonging to a certain ATM connection is divided into a first part located in a least on following ATM cell belonging to the same ATM connection. Microcell size information is associated with each microcell. Methods for finding microcell boundaries are provided.

Telecommunication system and a method for transferring microcells therein

An arrangement for feeding the subscriber's lines (10) of a public exchange with reduced line current upon the occurrence of a power failure, when the temperature within the public exchange or the temperature of individual components, mounted on circuit boards on which line interface circuits are present, exceeds a predetermined reference value, when the length of a subscriber's line is less than a line length reference value, or when the conversation time on a subscriber's line exceeds a conversation time reference value. All subscriber's lines or individual subscriber's lines only are fed with the reduced line current for a restricted time (FIG. 5B).

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Bromma, Sweden

Mats C Olstedt