[13][14] His other awards include: Deka delivered guest lectures as an invited faculty and distinguished visiting professor at leading centres and institutions in around 20 countries.

He delivered the valedictory address in a workshop of the Zonal Task Force on the Revised National Tuberculosis Control Programme at SRM University in Kattankulathur on 3 September 2010.

[16] Deka addressed the convocation ceremony at Pushpagiri Institute of Medical Sciences and Research Centre in Thiruvalla on 28 November 2011.

[17] Deka worked in the Cochlear Implant Facility at the ENT department AIIMS, developing rehabilitation activities for patient care and conducting research in this field.

[18][19] Deka provided leadership, along with his highly qualified team of audiologists and speech therapists, to address cochlear implantee support in Sri Lanka.