Interface apparatus for SDH/SONET interconnection

An interface apparatus for SDH/SONET interconnection which includes a transmission interface section provided at a position where an apparatus of the SDH system and an apparatus of the SONET system face each other and adapted to transmit a signal toward an apparatus of a different system, and a reception interface section provided at a position where the apparatus of the SDH system and the apparatus of the SONET system face each other and adapted to receive a signal from the apparatus of the different system, said interface apparatus for SDH/SONET interconnection comprising;

• a mode setting unit for setting a mode suitable for an apparatus of a counterpart system;
• a frame synchronization information inserting unit provided in said transmission interface section and adapted to insert frame synchronization information corresponding to the mode set by said mode setting unit;
• an overhead information inserting unit provided in said transmission interface section and adapted to insert overhead information corresponding to the mode set by said mode setting unit;
• a frame synchronization information detecting unit provided in said reception interface section and adapted to detect frame synchronization information from a reception signal;
• an overhead information detecting unit provided in said reception interface section and adapted to detect overhead information from the reception signal;
• a judging unit for judging the kind of an apparatus of a counterpart system based on the frame synchronization information detected by said frame synchronization information detecting unit and the overhead information detected by said overhead information detecting unit;
• an alarm processing unit for generating an alarm or cancelling the alarm based on a result of the judgment performed within said judging unit;
• and
• a format conversion processing unit provided in said reception interface section and adapted to cause the reception signal to undergo format conversion processing corresponding to a desired mode.

An interface apparatus for SDH/SONET interconnection which includes a transmission interface section provided at a position where an apparatus of the SDH system and an apparatus of the SONET system face each other and adapted to transmit a signal toward an apparatus of a different system, said interface apparatus for SDH/SONET interconnection comprising:

• a frame synchronization information detecting unit for detecting frame synchronization information from a reception signal;
• an overhead information detecting unit for detecting overhead information from the reception signal;
• a judging unit for judging the kind of an apparatus of a counterpart system based on the frame synchronization information detected by said frame synchronization information detecting unit and the overhead information detected by said overhead information detecting unit;
• a format conversion processing unit provided in said transmission interface section and adapted to cause the transmission signal to undergo format conversion processing corresponding to the mode judged by said judging unit;
• a frame synchronization information inserting unit provided in said transmission interface section and adapted to insert frame synchronization information corresponding to the mode judged by said judging unit;
• and
• an overhead information inserting unit provided in said transmission interface section and adapted to insert overhead information corresponding to the mode judged by said judging unit.

An interface apparatus for SDH/SONET interconnection which includes a reception interface section provided at a position where an apparatus of the SDH system and an apparatus of the SONET system face each other and adapted to receive a signal from an apparatus of a different system, said interface apparatus for SDH/SONET interconnection comprising:

• a frame synchronization information detecting unit provided in said reception interface section and adapted to detect frame synchronization information from a reception signal;
• an overhead information detecting unit provided in said reception interface section and adapted to detect overhead information from the reception signal;
• a judging unit for judging the kind of an apparatus of a counterpart system based on the frame synchronization information detected by said frame synchronization information detecting unit and the overhead information detected by said overhead information detecting unit;
• an alarm processing unit for generating an alarm or cancelling the alarm based on a result of the judgment performed within said judging unit;
• and
• a format conversion processing unit provided in said reception interface section and adapted to cause the reception signal to undergo format conversion processing corresponding to a mode judged by said judging unit.

An interface apparatus for SDH/SONET interconnection which includes a transmission interface section provided at a position where an apparatus of the SDH system and an apparatus of the SONET system face each other and adapted to transmit a signal toward an apparatus of a different system, and a reception interface section provided at a position where the apparatus of the SDH system and the apparatus of the SONET system face each other and adapted to receive a signal from the apparatus of the different system, said interface apparatus for SDH/SONET interconnection comprising:

• a frame synchronization information detecting unit provided in said reception interface section and adapted to detect frame synchronization information from a reception signal;
• an overhead information detecting unit provided in said reception interface section and adapted to detect overhead information from the reception signal;
• a judging unit for judging the kind of an apparatus of a counterpart system based on the frame synchronization information detected by said frame synchronization information detecting unit and the overhead information detected by said overhead information detecting unit;
• an alarm processing unit for generating an alarm or cancelling the alarm based on a result of the judgment performed within said judging unit;
• a first format conversion processing unit provided in said reception interface section and adapted to cause the reception signal to undergo format conversion processing corresponding to a mode judged by said judging unit;
• a second format conversion processing unit provided in said transmission interface section and adapted to cause the transmission signal to undergo format conversion processing corresponding to the mode judged by said judging unit;
• a frame synchronization information inserting unit provided in said transmission interface section and adapted to insert frame synchronization information corresponding to the mode judged by said judging unit;
• and
• an overhead information inserting unit provided in said transmission interface section and adapted to insert overhead information corresponding to the mode judged by said judging unit.