Hi, maybe I can help in some cuestions also
Arvind: The send BCCH option is for testing purposes, you can find it usage in site commisioning reports documents in the TRX LOOP TEST part
Amit: your radiolink problem could be a multipath propagation or interference problem the first can be solved with space diversity or changing the antenna height, you can find the second switching off each side of the link and reading in your manager if there are still a signal. it would be a good idea if climb up the tower and see if there is a reflection point or something that can affect your link.
Good luck and regards