BSNL debt liability stands at Rs 13,529.62 cr, MTNL's Rs 7,666cr: Telecom minster

State-run BSNL had an outstanding debt of Rs 7,666.94 crore as on January 31, 2016, while that of MTNL stood at Rs 13,529.62 crore at the end of February this year, Parliament was informed today.