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Telephone Directory

To reach IITM telephone extensions from outside, the caller has to dial prefix (044) 2257-xxxx, where xxxx is the PABX number 
For residential PABX lines (wherever provided) 

  • Replace 8xxx with 9xxx
  • Replace 4xxx with 6xxx

If residential line is not provided "Number Not Available" or Engaged Tone will be heard. 
Board PABX No : IVRS (8000) / ASR (9000)

The full format of the email is [Email]@iitm.ac.in

List of Intercom Extensions

NAME ROLE BUILDING ROOM NO. BUILDING NAME OFFICE EXTN (PABX). EMAIL
NCCR Lab KCL Department of Chemistry 5245
NCCR Research Lab I CYB 301 Department of Chemical Engineering 5235
NCCR Research Lab II KCL 204 Department of Chemistry 5231
NCCR Research Lab III KCL 304 Department of Chemistry 5232
NDT Lab MPS 101 Metallurgical and Materials Engineering 5777
Neelesh S Upadhye Faculty, Mathematics NAC1 635 New Academic Complex 4632 neelesh
Neelima M Gupte Girija Vaidyanathan Chair Professor, Physics HSB 312 Department of Humanities and Social Sciences Block 4861 gupte
Nelkesh Caterers Vindhya Mess Vindhya Mess 9479
Network Operation Center (Core Room) CC P.G. Senapathy Center for Computing Resource 5986
Network Services-1 CC 222 P.G. Senapathy Center for Computing Resource 5987
Network Services-2 CC 220 P.G. Senapathy Center for Computing Resource 5982
Networks and Stochastic Systems lab ESB 216 Electrical Sciences Block 5423
Neuro Mechanics Lab FMB Fluid Mechanics Building 5067
Neurologist/Nephrologist HSP 124 IITM Institute Hospital 8311
New Academic Complex-1 NAC1 New Academic Complex 8273
New Advisor Room 1 TEL EXGE 2 Telephone Exchange 8057
New Advisor Room 2 TEL EXGE 2 Telephone Exchange 8058
New Experimental Lab CYB Department of Chemical Engineering 5196
New Faculty Room 1 Faculty New BT 5 Department Of Biotechnology 8988
New High Power Laser Lab CSD 106 Department of Electrical Engineering 5535