Seems there is a merger plan for the two PSU's read on
Govt may re-route MTNL-BSNL merger- The Economic Times

the complete link is given belowNEW DELHI: The Centre is considering a new strategy for the merger of Bharat Sanchar Nigam (BSNL) and Mahanagar Telephone Nigam (MTNL). In the first phase, the government may form a holding company with BSNL and MTNL as its subsidiaries. After three years, the two PSUs would be merged into one entity.
Govt may re-route MTNL-BSNL merger- The Economic Times