Cross-connect switch and route monitoring assist apparatus

A cross-connect switch comprising:

• a multiport storage section having a plurality of read ports that are randomly accessible and a plurality of write ports to which data of a plurality of channels are individually input in parallel, the plurality of channels being time-division-multiplexed;
• an address storage section for storing addresses to be supplied to the respective write ports;
• and
• a controlling section for supplying read addresses sequentially to each of said read ports to read data in units of a plurality of channels, and for supplying addresses stored in said address storage section to said respective write ports.

A cross-connect switch comprising:

• a plural number n of multiport storage sections each having a plurality of read ports that are randomly accessible and a plurality of write ports to which data of a plurality of channels are individually input in parallel, the n being a number equal to a maximum number N of channels to which data of a co-channel is to be delivered, the plurality of channels being time-division-multiplexed;
• an address storage section for storing addresses to be supplied to said read ports;
• and
• a controlling section for supplying write addresses sequentially to each of said write ports to write data in units of a plurality of channels, and for supplying addresses stored in said address storage section to said read ports.

A cross-connect switch comprising:

• a plural number n of multiport storage sections each having a plurality of read ports that are randomly accessible and a plurality of write ports to which data of a plurality of channels are individually input in parallel, the n being a number smaller than a maximum number N of channels to which data of a co-channel is to be delivered, the plurality of channels being time-division-multiplexed;
• an address storage section for storing addresses to be supplied to said read ports;
• and
• a controlling section for supplying write addresses sequentially to each of said write ports to write data in units of a plurality of channels, and for supplying addresses stored in said address storage section to said read ports at a frequency that is equal to or smaller than a quotient of a frequency at which write addresses are updated and a ratio of the maximum number N to the plural number n.

A cross-connect switch comprising:

• a plural number n of multiport storage sections each having a plurality of read ports that are randomly accessible and a plurality of write ports to which data of a plurality of channels are individually input in parallel, the n being a number equal to a maximum number N of channels to which data of a co-channel is to be delivered, the plurality of channels being time-division-multiplexed;
• an address storage section for storing addresses to be supplied to said write ports;
• and
• a controlling section for supplying read addresses sequentially to each of said read ports to read data in units of a plurality of channels, and for supplying addresses stored in said address storage section to said write ports.

A cross-connect switch comprising:

• a plural number n of multiport storage sections each having a plurality of read ports that are randomly accessible and a plurality of write ports to which data of a plurality of channels are input in parallel, the n being a number smaller than a maximum number N of channels to which data of a co-channel is to be delivered, the plurality of channels being time-division-multiplexed individually;
• an address storage section for storing addresses to be supplied to said write ports;
• and
• a controlling section for supplying read addresses sequentially to each of said read ports to read data in units of a plurality of channels, and for supplying addresses stored in said address storage section to said write ports at a frequency that is equal to or smaller than a quotient of a frequency at which read addresses are updated and a ratio of the maximum number N to the plural number n.

A route monitoring assist apparatus comprising:

• a storage section for cyclically holding transmission information of a plurality of time-division-multiplexed channels, in units of a word having a length that is plural times longer than a word length of said transmission information, said storage section having write ports and read ports, the read ports having a word length shorter than a word length of the write ports and being randomly accessible;
• and
• a holding section for holding addresses which are externally supplied and of storage areas of said storage section, the storage areas being storage areas in which information contained in a desired field of a frame is held, the frame indicating said transmission information of said channels;
• and
• a controlling section for supplying said addresses held by said holding section to said read ports in synchronism with said channels.