Method for establishing communication in an optical access network

A method for putting an optical network unit (“ONU”) in communication with optical line termination (“OLT”) equipment in an optical access network, the method being implemented by the ONU, wherein the ONU is a single ONU that supports at least two transport systems, where each transport system is a communication set comprising a dedicated protocol, and said at least two transport systems are supervised by a protocol layer supervising any transport system of the optical access network, the method causing the ONU to perform:

• configuring itself to communicate by means of a first transport system among the transport systems supported by the ONU;
• starting a synchronisation with the OLT equipment for the first transport system;
• transmitting via the protocol layer supervising any transport system of the optical access network, without waiting for the synchronisation with the OLT equipment for the first transport system to have ended, information dependent on an identifier of the ONU and on an identifier of the first transport system;
• when the synchronisation is interrupted, reattempting the synchronisation with a second transport system among the transport systems supported by the ONU, and otherwise continuing the synchronisation for the first transport system until the ONU is put in communication in the optical access network.

A method for putting an optical network unit (“ONU”) in communication with optical line termination (“OLT”) equipment in an optical access network, wherein the ONU is a single ONU that supports at least two transport systems, where each transport system is a communication set comprising a dedicated protocol, and said at least two transport systems are supervised by a protocol layer supervising any transport system of the optical access network, wherein the method is implemented by the OLT equipment, the OLT equipment supporting various transport systems, each transport system being a communication set comprising a dedicated protocol, the method causing the OLT equipment to perform:

• starting a synchronisation with the ONU, at the initiative of the latter, for a first transport system;
• receiving, via the protocol layer supervising the transport systems which are supported by the OLT equipment, without waiting for the synchronisation with the ONU for the first transport system to have ended, information dependent on an identifier of the ONU and on an identifier of the first transport system;
• when the transport system to be used by the ONU is not the first transport system, interrupting the synchronisation by the protocol layer supervising any transport system of the optical access network;
• when the transport system to be used by the ONU is the first transport system, continuing the synchronisation for the first transport system until the ONU is put in communication in the optical access network.

An optical network unit (“ONU”) intended to be put in communication with optical line termination (“OLT”) equipment in an optical access network, wherein the ONU is a single ONU that supports at least two transport systems, where each transport system is a communication set comprising a dedicated protocol, and said at least two transport systems are supervised by a protocol layer supervising any transport system of the optical access network, the ONU comprising circuitry causing the ONU to perform:

• configuring itself for communicating by means of a first transport system among the transport systems supported by the ONU;
• starting a synchronisation with the OLT equipment for the first transport system;
• transmitting, via the protocol layer supervising any transport system of the optical access network, without waiting for the synchronisation with the OLT equipment for the first transport system to have ended, information dependent on an identifier of the ONU and on an identifier of the first transport system;
• when the synchronisation is interrupted, reattempting the synchronisation with a second transport system among the transport systems supported by the ONU, and otherwise continuing the synchronisation for the first transport system until the ONU is put in communication in the optical access network.

An optical line termination (“OLT”) equipment, intended to be put in communication with an output network unit (“ONU”) in an optical access network, wherein the ONU is a single ONU that supports at least two transport systems, where each transport system is a communication set comprising a dedicated protocol, and said at least two transport systems are supervised by a protocol layer supervising any transport system of the optical access network, wherein the OLT equipment supports various transport systems, each transport system being a communication set comprising a dedicated protocol, the OLT equipment comprising circuitry causing the OLT equipment to perform:

• starting a synchronisation with the ONU, at the initiative of the latter, for a first transport system;
• receiving, via the protocol layer supervising the transport systems which are supported by the OLT equipment, without waiting for the synchronisation with the ONU for the first transport system to have ended, information dependent on an identifier of the ONU and on an identifier of the first transport system;
• when the transport system to be used by the ONU is not the first transport system, interrupting the synchronisation by the protocol layer supervising any transport system of the optical access network;
• when the transport system to be used by the ONU is the first transport system, continuing the synchronisation for the first transport system until the ONU is put in communication in the optical access network.