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). | |
|---|---|---|---|---|---|---|
| Academic Electrical Maintenance | CWS SS | Central Workshop Sr. Sec. | 8189 | |||
| Academic Research - Secretary | ADB | 4 | Central Administration Building | 8041 | daroffice | |
| Academic Research Fax | ADB | 4 | Central Administration Building | 8042 | ||
| Academic Section FAX | ADB | 415 | Central Administration Building | 8045 | ||
| Accounts Branch/Despatch | ADB | 3 | Central Administration Building | 8172 | ||
| Acoustics Lab | BSB | 243 | Building Science Block | 5250 | ||
| Acquisition Section (Books) | Library | 110 | Central Library | 5951 | ||
| ACT Lab | BSB | 335 | Building Science Block | 5370 | ||
| Active Material Structures and Systems | MSB | 206 | Mechanical Sciences Block | 5063 | ||
| Ada Lovelace Conference Room - MR1 | BSB | 318 | Building Science Block | 5362 | ||
| ADI DSP Centre | CSD | 400 | Department of Electrical Engineering | 5400 | ||
| ADI DSP Lab | FOSAPP | Electrical Sciences Block | 5401 | |||
| ADI Seminar Hall | CSD | 320 | Department of Electrical Engineering | 5399 | ||
| ADL | CC | 220 | P.G. Senapathy Center for Computing Resource | 4995 | ||
| Admin Office (HM) | OHM | 209 | Office of Hostel Management | 8503 | sethuramess | |
| Admin Staff-1 | NAC1 | 6 | New Academic Complex | 8918 | ||
| Admin Staff-2 | NAC1 | 6 | New Academic Complex | 8919 | ||
| Administration | New BT | 5 | Department Of Biotechnology | 8984 | ||
| Administration 1A | ADB | 2 | Central Administration Building | 8110 | ||
| Administration 1B | ADB | 2 | Central Administration Building | 8116 |