Backplane and backplane communication system

A backplane, comprising:

• at least two service slots with the same function;
• an exchange slot;
• and
• wherein among pins of different service slots with the same function for connecting to the exchange slot, at least two pins are arranged to resemble a stepped form;
• wherein when the service slots with the same function and the exchange slot are located at the same row of the backplane, the pin arrangement for the pins of the service slots with the same function connected to the exchange slot specifically comprises:
• in the at least two service slots with the same function, the pins connected to the exchange slot are located at the d+q+1 th position in the same column of respective service slot, q being a location lagging number of a first pin connected to the exchange slot, the first pin connected to the exchange slot being located in the service slot with a minimum d, and d being the number of the service slots with the same function by which a present service slot is spaced from the exchange slot, wherein d and q are integers no less than 0.

A backplane, comprising:

• at least two service slots with the same function;
• an exchange slot;
• and
• wherein among pins of different service slots with the same function for connecting to the exchange slot, at least two arranged to resemble a stepped form;
• wherein when the exchange slot is higher than the service slots with the same function by one row, and location numberings of the pins of the exchange slot connected to the service slots are arranged from large to small according to n values of the service slots, n being a difference between m and p, m being a total number of the service slots with the same function on a side of the exchange slot, p being the number of the service slots with the same function by which a present service slot is spaced from the exchange slot in a vertical direction of the exchange slot, the pin arrangement for the pins of the service slots with the same function connected to the exchange slot specifically comprises:
• in the at least two service slots with the same function, the pins connected to the exchange slot are located at the p+q+1 th position in the same column of respective service slot, q being a location lagging number of a first pin connected to the exchange slot, the first pin connected to the exchange slot being located in the service slot with a minimum p, wherein p and q are integers no less than 0.

A backplane, comprising:

• at least two service slots with the same function;
• an exchange slot;
• and
• wherein among pins of different service slots with the same function for connecting to the exchange slot, at least two pins are arranged to resemble a stepped form;
• wherein when the exchange slot is lower than the service slots with the same function by one row, and location numberings of the pins of the exchange slot connected to the service slots are arranged from small to large according to n values of the service slots, n being a difference between m and p, m being a total number of the service slots with the same function on a side of the exchange slot, p being the number of the service slots with the same function by which a present service slot is spaced from the exchange slot in a vertical direction of the exchange slot, the pin arrangement for the pins of the service slots with the same function connected to the exchange slot specifically comprises:
• in the at least two service slots with the same function, the pins connected to the exchange slot are located at the n+q th position in the same column of respective service slot, q being a location lagging number of a first pin connected to the exchange slot, the first pin connected to the exchange slot being located in the service slot with a minimum p, wherein n and m are positive integers, and p and q are integers no less than 0.