xbee i/o pin pairing ? in series 2 AKA xbee zigbee.

XBeeA — LED (DIO- digital Low)
XBeeB — Push Button(DIO- Digital input)

i was able sent data from XBeeB .console displays the API frame detail on XBeeA but nothing happens to LED. please help.

That is because the Zigbee enabled products do not support DIO line passing. They can only indicate that a status has changed via an API frame or have a line changed its state via a Remote AT command sent in the form of an API command.

which xbee product supports DIO line passing ?

The only product that supports Direct DIO line passing is the XBee 802.15.4 product.