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)
| NAME | ROLE | BUILDING | ROOM NO. | BUILDING NAME | OFFICE EXTN (PABX). | |
|---|---|---|---|---|---|---|
| Equipment Room 1 & 2 | New BT | 118 | Department Of Biotechnology | 8907 | ||
| ESI / GC Mass Lab | CYB | 105 | Department of Chemical Engineering | 5181 | ||
| Estate Section | ADB | 2 | Central Administration Building | 8114 | estate | |
| ETC Post Production cabin | ICSR | 404 | Industrial Consultancy & Sponsored Research Building | 5916 | ||
| ETC Producer | ICSR | 403 | Industrial Consultancy & Sponsored Research Building | 5906 | krr | |
| ETC Studio-1 (Lecture Theatre) | ICSR | 408 | Industrial Consultancy & Sponsored Research Building | 5901 | ||
| ETC Studio-2 | ICSR | 405 | Industrial Consultancy & Sponsored Research Building | 5902 | ||
| ETC Video Contol Cabins | ICSR | 404 | Industrial Consultancy & Sponsored Research Building | 5903 | ||
| ETC Video editing/ Post Production | ICSR | 410 | Industrial Consultancy & Sponsored Research Building | 5900 | kankrish | |
| Ethayaraja Mani | Faculty, Chemical Engineering | NAC1 | 452 | New Academic Complex | 4157 | ethaya |
| EWRE Hydraulic Lab | EWRE | Environmental and Water Resources Engineering | 5316 | |||
| EWRE Lab 3 | EWRE | 4 | Environmental and Water Resources Engineering | 5323 | ||
| EWRE Lab 4 | EWRE | 5 | Environmental and Water Resources Engineering | 5324 | ||
| EWRE Office | ED | 526 | Department of Engineering Design | 5269 | ||
| EWRE Research Scholar Room 4 | EWRE | 33 | Environmental and Water Resources Engineering | 5314 | ||
| EWRE Research Scholar Room 6 | EWRE | 39 | Environmental and Water Resources Engineering | 5318 | ||
| EWRE Research Scholar Room 7 | EWRE | 40 | Environmental and Water Resources Engineering | 5319 | ||
| EWRE Workshop | EWRE | 7 | Environmental and Water Resources Engineering | 5271 | ||
| Exhibition Hall | ICSR | Industrial Consultancy & Sponsored Research Building | 8365 | |||
| Experimental DD Lab | HSB | 101 | Department of Humanities and Social Sciences Block | 5888 |