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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
Transportation Engg Faculty Meeting BSB 238 Building Science Block 5295
Transportation Enggg Project Room BSB 238 Building Science Block 5294
TRGT DCF Lab BSB 243 Building Science Block 5327
Trivitron Lab ED 405 Department of Engineering Design 5642
TTML Computer Room TTML 203 Mechanical Engineering 5737
TTML Lab TTML Mechanical Engineering 5735
TTML Lab Office TTML Mechanical Engineering 5736
TTML Research Scholar Room TTML 207 Mechanical Engineering 5738
TUCS Near Shopping Center 9478
Tuhin Subhra Santra Faculty, Engineering Design ED 416 Department of Engineering Design 4747 tuhin
Turbulent & Unsteady Fluid Flows - Computational Lab CTC Composite Technology Center 5039
Turbulent & Unsteady Fluid Flows - Experimental Lab CTC Composite Technology Center 5034
Tyre Dynamics Lab ED 205 Department of Engineering Design 5696
Tyre Lab ED 101 Department of Engineering Design 5641
Uday Chakkingal Faculty NAC1 150 New Academic Complex 4775 udaychak
Uday K Khankhoje Faculty, Electrical Engineering ESB 324 Electrical Sciences Block 4450 uday
UG Lab CYB 102 Department of Chemical Engineering 5241
UG Lab 1 BT 118 Department Of Biotechnology 5105
UG Lab 2 BT 115 Department Of Biotechnology 5121
UG Lab 3 BT 112 Department Of Biotechnology 5133