Abstract: Apparatus (D1) is dedicated to processing STM-n/STS-m type data frames in a communications network. It comprises at least one STM-n/STS-m interface unit (LIU1) adapted to receive STM-n/STS-m type data frames from a communications network and processor means (MTj) adapted, on receiving data from an STM-n/STS-m frame coming from said line interface unit (LIU1): i) to segment the whole of said received frame into m groups of p successive bytes; ii) then to associate with each group a control header containing data representing its position within the STM-n/STS-m frame; and iii) to encapsulate each group and the associated control header in a payload data field of an Ethernet frame.

Abstract: Apparatus is dedicated to switching data packet frames of different types coming from at least two transport networks that use different transport protocol layers.

Abstract: A synchronization system (D) for equipment of a synchronous transport network comprises, firstly, a first synchronization module (MA) comprising i) a first submodule (SM1A) delivering a first intermediate clock signal derived from a first external reference clock signal or an internal reference clock signal, ii) a second submodule (SM2A) delivering a first main reference clock signal derived from the first intermediate clock signal or a second intermediate clock signal, and iii) a third submodule (SM3A) delivering a first output reference clock signal derived from the first main reference clock signal or a second main reference clock signal, and, secondly, a second synchronization module (MB) comprising i) a first submodule (SM1B) delivering the second intermediate clock signal derived from another first external reference clock signal and another internal reference clock signal, ii) a second submodule (SM2B) delivering the second main reference clock signal derived from the first or the second intermediate c

Abstract: Apparatus (A) is dedicated to switching data packet frames of different types coming from at least two transport networks (N1, N2) that use different transport protocol layers.

Abstract: Apparatus (D1) is dedicated to processing STM-n/STS-m type data frames in a communications network. It comprises at least one STM-n/STS-m interface unit (LIU1) adapted to receive STM-n/STS-m type data frames from a communications network and processor means (MTj) adapted, on receiving data from an STM-n/STS-m frame coming from said line interface unit (LIU1): i) to segment the whole of said received frame into m groups of p successive bytes; ii) then to associate with each group a control header containing data representing its position within the STM-n/STS-m frame; and iii) to encapsulate each group and the associated control header in a payload data field of an Ethernet frame.

Abstract: A synchronization system (D) for equipment of a synchronous transport network comprises, firstly, a first synchronization module (MA) comprising i) a first submodule (SM1A) delivering a first intermediate clock signal derived from a first external reference clock signal or an internal reference clock signal, ii) a second submodule (SM2A) delivering a first main reference clock signal derived from the first intermediate clock signal or a second intermediate clock signal, and iii) a third submodule (SM3A) delivering a first output reference clock signal derived from the first main reference clock signal or a second main reference clock signal, and, secondly, a second synchronization module (MB) comprising i) a first submodule (SM1B) delivering the second intermediate clock signal derived from another first external reference clock signal and another internal reference clock signal, ii) a second submodule (SM2B) delivering the second main reference clock signal derived from the first or the second intermediate c