BHOPAL: The Bharat Sanchar Nigam Limited (BSNL) has launched a unique and beneficial schemes for its landline customers. Under the scheme, the customers will be able to make unlimited free calls to any network – whether STD or local – from 9 pm to 7 am. There would be no charge for calls made during the said duration. The scheme would be effective from May 1. The customers who have taken landline connection within the past six months may also avail the benefit of this scheme by giving an application. Those taking new landline connections from May 1 onwards will also get the facility of free unlimited night calling.