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). | |
|---|---|---|---|---|---|---|
| Office Section-10 | ICSR | Industrial Consultancy & Sponsored Research Building | 9791 | |||
| Office Section-11 | ICSR | Industrial Consultancy & Sponsored Research Building | 9792 | |||
| Office Section-3 | ICSR | Industrial Consultancy & Sponsored Research Building | 9784 | |||
| Office Section-5 | ICSR | Industrial Consultancy & Sponsored Research Building | 9786 | |||
| Office Section-6 | ICSR | Industrial Consultancy & Sponsored Research Building | 9787 | |||
| Office Section-7 | ICSR | Industrial Consultancy & Sponsored Research Building | 9788 | |||
| Office Section-8 | ICSR | Industrial Consultancy & Sponsored Research Building | 9789 | |||
| Office Section-9 | ICSR | Industrial Consultancy & Sponsored Research Building | 9790 | |||
| Office Security Section | ADB | Central Administration Building | 8260 | secsec | ||
| Office Stores & Purchase | ADB | 3 | Central Administration Building | 8285 | ||
| Office/Board Room | ADB | 5 | Central Administration Building | 8004 | doffice | |
| Office/Stores | HSP | IITM Institute Hospital | 8300 | hospoff | ||
| Officer In-charge (for both Guest Houses) | Taramani Guest House | Taramani Guest House | 8449 | o-i-c | ||
| Officers Room 1 | NAC1 | 6 | New Academic Complex | 8911 | ||
| Officers Room 2 | NAC1 | 6 | New Academic Complex | 8912 | ||
| Officers Room 3 | NAC1 | 6 | New Academic Complex | 8913 | ||
| Officers Room 4 | NAC1 | 6 | New Academic Complex | 8914 | ||
| Opthalmology | HSP | 109 | IITM Institute Hospital | 8318 | ||
| Optical Comm Lab 1 | ESB | 321 | Electrical Sciences Block | 5451 | ||
| Optical Comm Lab 2 | ESB | 321 | Electrical Sciences Block | 5452 |